The right inverter size for a campervan or motorhome depends on the largest 230V appliance you want to operate, whether several appliances will run together and how much current the leisure battery can safely deliver.

For charging laptops, camera batteries and other small electronics, a 300–600W inverter may be enough. Coffee machines and microwaves often require 1,500–2,000W, while kettles, hairdryers and induction hobs can require a properly designed 2,000–3,000W system.

However, simply buying the largest inverter available is not the answer.

A larger inverter can require:

• A larger leisure battery
• A higher battery-management-system current rating
• Much heavier battery cables
• Higher-rated fuses and isolators
• More charging capacity
• Better ventilation
• Correct 230V protection and changeover equipment

At WeConvert, we design and install campervan and motorhome inverter systems at our Blackburn workshop, matching the inverter, battery bank, cables and charging equipment to the appliances the owner genuinely intends to use.

Quick Campervan Inverter Sizing Guide

These are planning ranges, not guaranteed recommendations.

The actual power rating printed on the appliance must be checked. Two appliances that appear similar can have very different electrical demands.

What Does a Campervan Inverter Do?

A campervan inverter converts the leisure battery’s 12V or 24V direct current into approximately 230V alternating current, allowing suitable household-style equipment to operate away from a mains hook-up.

The normal energy route is:

Leisure battery → inverter → 230V appliance

The inverter does not generate electricity. It converts energy already stored in the leisure battery.

It also cannot replace:

• Solar panels
• Alternator charging
• A DC-to-DC charger
• A mains battery charger
• Adequate battery capacity

Inverter conversion is not perfectly efficient, so the battery must supply more energy than the connected appliance ultimately receives. Published inverter specifications also distinguish between continuous output, temporary peak output, efficiency and no-load consumption.

How to Calculate the Inverter Size You Need

Step 1: List every appliance you want to operate

Do not start by choosing an inverter.

Start with the equipment you plan to use, such as:

• Laptop
• Television
• Camera charger
• Games console
• Coffee machine
• Microwave
• Kettle
• Hairdryer
• Induction hob
• Blender
• Power tools

Find the electrical input rating on each appliance’s:

• Rating label
• Plug-in power supply
• Manual
• Manufacturer’s specification

Use the input wattage, not the appliance’s marketing description.

A microwave advertised as “800W” may consume substantially more than 800W because that number can describe its cooking output rather than the electrical power it draws. Inverter manufacturers therefore advise using the appliance rating plate when sizing a system.

Step 2: Decide what will run at the same time

The inverter must support the combined demand of appliances operating simultaneously.

For example:

• Laptop charger: 100W
• Television: 60W
• Camera charger: 30W

Combined load:

190W

A 300W pure sine wave inverter may be suitable, subject to the exact appliance and inverter specifications.

However:

• Microwave: 1,400W input
• Coffee machine: 1,200W
• Laptop: 100W

Combined load:

2,700W

A 2,000W inverter could not operate all three together.

You could either install a larger system or manage the loads so the coffee machine and microwave are never used simultaneously.

Load management is often cheaper and more practical than installing a huge battery and inverter system.

Step 3: Allow for startup surge

Some appliances draw more power when starting than during normal operation.

Examples can include:

• Fridges
• Compressors
• Motors
• Pumps
• Power tools
• Microwaves
• Certain coffee machines

This temporary demand is often described as:

• Surge power
• Peak power
• Starting power

An inverter may be rated for 1,000W continuously but capable of supplying a higher figure briefly.

The duration matters. A peak rating available for only a fraction of a second may not start an appliance whose motor needs increased power for several seconds.

Manufacturer specifications should therefore be checked for both:

• Continuous output
• Peak output and duration

As one example, Victron’s current Inverter Smart specifications separate continuous wattage from substantially higher peak VA ratings, while also showing that continuous output reduces as operating temperature rises.

Step 4: Include sensible headroom

Do not design the system so the inverter constantly operates at its absolute maximum.

Some headroom allows for:

• Appliance variation
• Startup demand
• Warmer operating temperatures
• Battery-voltage changes
• Future small loads
• Conversion losses
• Inverter derating

This does not mean automatically buying an inverter twice as large as necessary.

A modest design margin based on the actual appliance and inverter specification is normally more sensible than either undersizing the unit or buying a large inverter without considering the battery system.

Typical Appliance Wattages

The following are approximate planning ranges. Check the exact rating plate before selecting an inverter.

The inverter should not be selected from this table alone.

Equipment can vary considerably, and some appliances have high startup demand or may not operate correctly from every type of inverter.

Is a 300W Inverter Enough for a Campervan?

A 300W inverter can be suitable for:

• Laptop charging
• Camera equipment
• Small television
• Low-powered electronics
• Device chargers
• Certain medical or specialist equipment where the manufacturer permits inverter operation

It is a sensible option where the owner does not need high-powered kitchen appliances.

Advantages of a smaller inverter include:

• Lower purchase cost
• Lower potential battery demand
• Smaller cable requirements
• Easier installation
• Lower standby consumption
• Less space required

A small dedicated inverter is often a better choice than installing a 3,000W unit solely because the owner may occasionally charge a laptop.

Is a 600W Inverter Enough?

A 500–600W inverter can comfortably cover many electronic loads and some smaller appliances.

It may support:

• One or two laptops
• Television
• Camera chargers
• Small games console
• Certain low-powered blenders
• Multiple device chargers

It will not normally support:

• Standard kettle
• Microwave
• Hairdryer
• Induction hob
• Electric heater

This range is often suitable for owners who want useful 230V power without building an extremely high-current battery system.

When Would You Need a 1,000W Inverter?

A 1,000W inverter may be considered for:

• Multiple electronic devices
• Small blender
• Low-powered coffee equipment
• Certain travel appliances
• Small tools
• Appliances whose rating remains comfortably below 1,000W

Check startup demand carefully.

A motor-driven appliance rated at 700W could still exceed a 1,000W inverter’s temporary capability when starting.

Also check whether “1,000W” is the inverter’s genuine continuous rating rather than only its peak or marketing figure.

Is a 1,500W Inverter Enough for a Coffee Machine?

It may be.

Compact coffee machines can fall within the capability of a quality 1,500W inverter, but larger machines may require more.

Check:

• Appliance input wattage
• Heating-element demand
• Pump startup demand
• Inverter continuous output
• Inverter peak output
• Battery current limit

A 1,500W coffee machine can draw well over 120A from a nominal 12V battery after inverter losses are considered.

The fact that the appliance operates for only a few minutes reduces its total energy use, but it does not reduce the instantaneous current that the cables, fuse, battery and BMS must supply.

What Size Inverter Is Needed for a Microwave?

Many campervan microwave installations use an inverter in the 1,500–2,000W range, but the microwave’s electrical input rating is the important number.

An appliance advertised as an 800W microwave may have an input demand of approximately 1,200–1,500W.

A suitable system must account for:

• Microwave input wattage
• Startup behaviour
• Inverter continuous output
• Battery voltage under load
• Battery BMS current rating
• Cable voltage drop
• Other simultaneous appliances

A 2,000W inverter is not automatically suitable for every microwave, and a microwave that works for a few seconds during testing may still cause the inverter to overload during a longer cooking cycle.

What Size Inverter Is Needed for a Kettle?

A standard domestic kettle can require 2,000–3,000W.

That normally means considering:

• 2,500–3,000W inverter
• High-current lithium battery
• BMS capable of the required continuous current
• Large battery cables
• High-rated fuse and isolator
• Strong battery charging system
• Secure and ventilated installation

A lower-wattage travel kettle can reduce the inverter requirement, but it will generally take longer to boil water.

From an electrical-system perspective, heating water from a battery is demanding. Gas or diesel-based cooking may remain more practical for owners who do not already need a large inverter system.

What Size Inverter Is Needed for an Induction Hob?

A single induction hob may draw around 1,000–2,000W, depending on its setting and specification.

A properly designed system may use:

• 2,000–3,000W pure sine wave inverter
• 200Ah or larger lithium battery
• High-current BMS
• Short, heavy battery cables
• Correct fuse and isolation
• Substantial alternator, solar and mains charging

The battery capacity required depends on how long the hob operates and what other equipment is running.

Induction cooking can be practical, but it should be planned as part of the complete electrical system rather than added to an existing small leisure-battery installation.

Pure Sine Wave or Modified Sine Wave?

For most modern campervan and motorhome installations, we would recommend a pure sine wave inverter.

Pure sine wave output is designed to resemble normal mains electricity more closely and is generally the safer choice for:

• Laptop chargers
• Televisions
• Audio equipment
• Coffee machines
• Microwaves
• Motor-driven appliances
• Equipment with electronic controls
• Battery chargers

Modified sine wave inverters can be cheaper, but some equipment may:

• Run noisily
• Operate less efficiently
• Become hotter
• Fail to start
• Display faults
• Sustain damage
• Be unsuitable under its manufacturer’s instructions

Current manufacturer guidance generally positions pure sine wave inverters as the suitable option for sensitive electronics and a wider range of household appliances.

Unless there is a specific and well-understood reason to use modified sine wave equipment, pure sine wave is the sensible starting point.

Continuous Power, Peak Power and VA

Inverter specifications can include:

• Watts
• Volt-amperes, or VA
• Continuous power
• Peak power
• Surge power

These figures are not always interchangeable.

Continuous power

The power the inverter is designed to deliver during normal sustained use under specified conditions.

Peak or surge power

A higher output available temporarily to start demanding equipment.

Volt-amperes

VA describes apparent power. The usable watt output can be lower depending on the inverter and connected load.

For example, a product described as a “2,000VA inverter” should not automatically be assumed to supply 2,000W continuously.

Check the detailed technical data.

A current Victron example rated at 2,000VA lists 1,600W continuous output at 25°C, falling further at higher temperatures.

How Much Current Does an Inverter Draw From a 12V Battery?

The current depends mainly on the connected appliance, battery voltage and inverter efficiency.

A useful estimate is:

Battery current = appliance watts ÷ battery voltage ÷ inverter efficiency

For a 2,000W appliance, 12.8V battery and approximately 90% efficiency:

2,000 ÷ 12.8 ÷ 0.90 = approximately 174A

A 3,000W load under similar conditions could demand around:

260A

The actual current changes with:

• Battery voltage
• Appliance load
• Inverter efficiency
• Cable losses
• Temperature
• Battery condition

This is why high-powered 12V inverter installations need such substantial cables and protection.

Manufacturer guidance also confirms that battery current is determined by the real load being supplied, rather than simply by the maximum number printed on the inverter.

Why Inverter Size and Battery Capacity Are Different

Inverter size tells you how much power can be supplied at one moment.

Battery capacity helps determine how long that power can be supplied.

For example:

• A 3,000W inverter may be able to start a 2,500W kettle.
• A small battery may still shut down almost immediately.
• A battery with insufficient BMS current may refuse to supply the load.
• Undersized cables may cause excessive voltage drop or heat.

A large inverter does not create a large energy store.

You must check both:

1. Can the battery supply the required current?
2. Does the battery contain enough energy for the required operating time?

How Much Battery Capacity Does an Inverter Need?

There is no fixed battery size for every inverter.

The correct battery depends on:

• Appliance power
• Operating duration
• Battery chemistry
• Permitted depth of discharge
• Battery BMS rating
• Battery voltage
• Other 12V loads
• Available charging

Small electronics system

Possible specification:

• 300–600W inverter
• 100Ah battery
• Laptop and device charging
• No high-powered heating appliances

Medium appliance system

Possible specification:

• 1,000–1,500W inverter
• 100–230Ah lithium battery
• Coffee equipment or small appliances
• Battery BMS matched to inverter demand

High-powered system

Possible specification:

• 2,000–3,000W inverter
• 200–460Ah lithium battery
• Heavy cables
• High-current BMS
• Enhanced charging capacity
• Suitable 230V distribution and protection

These are examples, not universal combinations.

The battery manufacturer’s maximum and recommended continuous discharge limits must be checked. Batteries with the same amp-hour capacity can have very different current limits. Victron’s own lithium technical data, for example, lists separate maximum and recommended continuous discharge currents for different battery models.

Can a 100Ah Lithium Battery Run a 2,000W Inverter?

Possibly, but not every 100Ah lithium battery can.

A 2,000W appliance may demand approximately 170–190A from a 12V battery once losses and voltage variation are considered.

The battery would therefore need:

• A BMS rated for the load
• Suitable surge capacity
• Appropriate cables
• Correct fuse
• Secure terminals
• Adequate state of charge
• Permitted operating temperature

Many 100Ah lithium batteries have continuous current limits below the requirement of a heavily loaded 2,000W inverter.

Even where the BMS can supply the current, capacity may still be limited.

A battery can be capable of running a load briefly without being suitable for operating it repeatedly or for a long duration.

Can an AGM Battery Run an Inverter?

Yes, but large loads can be more difficult for lead-acid and AGM batteries.

Under a high current, an AGM battery may experience:

• Greater voltage drop
• Reduced usable capacity
• Earlier inverter shutdown
• Increased stress
• Need for a larger battery bank
• Longer recharge time

A single 100Ah AGM battery may operate a small inverter effectively but struggle with sustained high-powered appliances.

Large inverter systems often use lithium because lithium batteries can provide more usable capacity and maintain voltage better under heavy loads—provided the BMS and system are correctly specified.

For costs and compatibility considerations, read How Much Does a Campervan or Motorhome Lithium Battery Upgrade Cost?.

Inverter Cable Size Matters

A high-powered inverter can draw hundreds of amps from the battery.

The battery cables must be selected for:

• Maximum current
• Cable length
• Permitted voltage drop
• Insulation rating
• Installation environment
• Terminal type
• Manufacturer requirements

The positive and negative cable run must both be considered.

A cable that looks physically substantial may still be unsuitable.

Possible consequences of undersized or poorly terminated cables include:

• Inverter low-voltage alarms
• Inverter shutdown
• Reduced appliance performance
• Hot terminals
• Melted insulation
• Damaged fuse holders
• Fire risk

Keep high-current battery cables as short as reasonably practical, while maintaining safe equipment placement and service access.

Cable size should come from a proper calculation and the inverter manufacturer’s instructions rather than a generic internet chart.

Fuse and Isolator Requirements

The DC supply to an inverter requires suitable overcurrent protection.

The design may include:

• Battery fuse
• Correctly rated fuse holder
• Battery isolator
• Positive and negative busbars
• Terminal covers
• Cable support
• Protective enclosure

The fuse should protect the cable and installation.

Do not choose a fuse solely because it matches the inverter’s advertised wattage.

The design must consider:

• Maximum expected current
• Cable capacity
• Inverter manufacturer guidance
• Surge demand
• Battery fault current
• Fuse breaking capacity

A lithium battery can deliver very high current into a short circuit, making correct protection especially important.

Inverter Standby Consumption

An inverter can consume energy even when no useful appliance is operating.

This is described as:

• No-load consumption
• Idle consumption
• Standby consumption

As a current example, Victron lists approximately 8W no-load consumption for some 12V 1,600VA and 2,000VA models, and around 12W for a 12V 3,000VA model. The same equipment uses considerably less in its configurable ECO mode.

An inverter consuming 12W continuously would use approximately:

288Wh over 24 hours

That could be a meaningful proportion of a smaller leisure battery’s usable energy before an appliance has been operated.

Switch the inverter off when it is not required, unless it needs to remain active for essential equipment and the system has been designed accordingly.

Read Why Does My Campervan or Motorhome Leisure Battery Keep Going Flat Overnight? for more information about standby loads and hidden electrical drains.

Does ECO Mode Solve Standby Consumption?

ECO or search mode can reduce no-load consumption by switching the inverter into a low-power state and periodically checking for a connected load.

It can be useful where the inverter remains available throughout the day.

However, very small appliances may not draw enough power to wake the inverter reliably.

Examples can include:

• Low-powered chargers
• Appliances in standby
• Electronic controls
• Equipment that starts with a very small load

The wake-up threshold should be configured and tested with the equipment the owner actually uses. Victron describes ECO mode as entering a search state during no-load or very-low-load conditions and returning to normal operation when sufficient load is detected.

Where Should an Inverter Be Installed?

An inverter should be positioned:

• Close enough to the battery to control DC cable length
• In a dry area
• With suitable ventilation
• Away from direct heat
• Away from water pipes and leaks
• Protected from stored items
• Accessible for inspection
• Securely mounted
• In the orientation required by the manufacturer

It should not be installed:

• Loose beneath a seat
• Covered by bedding
• Inside a sealed unventilated box
• Beside a diesel-heater outlet
• Where luggage can block cooling fans
• Directly beneath plumbing connections
• Against combustible material without required clearance

Inverters can reduce output or shut down if they become too hot. Published specifications can show significantly lower continuous output at elevated temperatures.

Dedicated Inverter Socket or All Campervan Sockets?

There are two broad installation approaches.

Dedicated inverter socket

The inverter supplies one or more clearly identified sockets that operate only from the inverter.

Advantages include:

• Simpler arrangement
• Clear separation from hook-up circuits
• Reduced risk of accidental high loads
• Easier load management
• Potentially lower installation cost

This is often sensible for small laptop or electronics systems.

Integrated socket system

The inverter supplies some or all existing 230V sockets through appropriate switching and protection.

This may require:

• Automatic or manual changeover
• Prevention of backfeeding
• Correct neutral and earth arrangements
• Suitable RCD protection
• Circuit separation
• Consumer-unit assessment
• Clear labelling
• Formal testing

This work is more complex than connecting an inverter to a battery.

Never Backfeed the Hook-Up Inlet

Do not connect an inverter to the vehicle’s exterior hook-up inlet to energise the internal sockets.

This improvised arrangement can create problems involving:

• Backfeeding
• Earthing
• Neutral-to-earth arrangements
• RCD operation
• Exposed live pins
• Incorrect supply changeover
• Damage if mains hook-up is connected simultaneously

An integrated inverter system requires proper changeover equipment so that the inverter and external hook-up cannot energise the same circuits incorrectly.

The IET confirms that Section 721 of BS 7671 contains specific requirements for electrical installations in caravans and motor caravans, including protective measures, RCDs and bonding.

Inverter or Inverter-Charger?

Standalone inverter

A standalone inverter converts battery power to 230V.

It does not normally charge the battery from mains hook-up.

This can be suitable where the vehicle already has:

• Separate mains charger
• Existing solar controller
• DC-to-DC charger
• Simple socket requirement

Inverter-charger

An inverter-charger combines:

• Battery inverter
• Mains battery charger
• Often an automatic transfer or changeover function

It may provide a more integrated installation for larger off-grid systems.

Possible advantages include:

• Powerful mains charging
• Automatic changeover
• Reduced number of separate components
• System monitoring
• Configurable power management

However, it is usually:

• Larger
• More expensive
• More complex
• More demanding to install
• Dependent on correct system configuration

A large inverter-charger should be designed as part of the complete battery and 230V installation.

Does Solar Determine the Inverter Size?

Not directly.

The inverter is primarily sized from the appliances you intend to operate.

Solar determines how quickly some of the consumed energy can be replaced.

For example:

• Inverter load: 2,000W
• Solar array output at that moment: 300W
• Remaining energy comes from the battery

The solar reduces the net battery draw slightly, but it does not turn a small battery system into a 2,000W power supply.

For solar sizing, read How Much Solar Does a Campervan or Motorhome Need?.

How Quickly Will a Large Inverter Drain the Battery?

The answer depends on the connected appliance and operating time rather than the inverter’s maximum rating alone.

For example, a 3,000W inverter supplying a 100W laptop charger draws much less current than when supplying a 2,500W kettle.

Brief high-powered use can consume less total energy than a smaller load operating all day.

Example: 2,000W kettle for five minutes

Appliance energy:

2,000W × 5 ÷ 60 = approximately 167Wh

Allowing for inverter losses, battery use could be around:

185Wh

Example: 100W laptop for five hours

Appliance energy:

100W × 5 hours = 500Wh

Allowing for losses, battery use could exceed:

550Wh

The kettle creates the greater instantaneous current, while the laptop uses more total energy in this example.

The system must be designed for both:

• Maximum power
• Total daily energy use

Example System 1: Laptop and Device Charging

The owner wants to operate:

• Laptop
• Camera chargers
• Phone chargers
• Small television

Possible system:

• 300–600W pure sine wave inverter
• 100Ah or larger leisure battery
• Dedicated inverter socket
• Suitable fuse and cables
• Solar or alternator charging

This is relatively straightforward and avoids building the vehicle around high-powered appliances.

Example System 2: Coffee Machine and Microwave

The owner wants to operate:

• Laptop
• 1,200W coffee machine
• Microwave with 1,400W input
• Small electronics

The coffee machine and microwave will not operate together.

Possible system:

• 2,000W pure sine wave inverter
• 200Ah or larger lithium battery
• Battery BMS able to support the current
• High-current fuse and isolator
• Heavy battery cables
• Battery monitor
• Strong DC-to-DC and mains charging

A workshop assessment would still be required before confirming the specification.

Example System 3: Induction Cooking

The owner wants:

• Single induction hob
• Coffee machine
• Microwave
• Remote-working equipment
• Several days off-grid

Possible system:

• 2,500–3,000W pure sine wave inverter or inverter-charger
• 300–460Ah lithium battery bank
• High-current battery-management capability
• Large DC cables and busbars
• Substantial circuit protection
• 400W or more solar where roof space permits
• Strong alternator charging
• Mains charger
• Correct 230V distribution and changeover

This is a complete off-grid electrical system rather than a basic inverter installation.

Common Campervan Inverter Mistakes

Buying the inverter before choosing the appliances

The appliances determine the required inverter—not the other way around.

Using the microwave cooking wattage

Use the electrical input rating from the label.

Ignoring startup power

Motors and compressors may need more power when starting.

Assuming VA always equals watts

Check the published continuous watt output.

Fitting a large inverter to a small battery

The battery may be unable to supply the current.

Ignoring the battery BMS rating

A lithium battery can shut down even when it still has stored energy.

Using undersized cables

This can cause low-voltage shutdown, heat and equipment damage.

Leaving the inverter switched on permanently

Standby consumption can gradually drain the battery.

Running several appliances together

The combined load may exceed the inverter’s rating.

Powering the vehicle through the hook-up inlet

This is not a safe substitute for proper changeover and protection.

Assuming solar directly powers high-load appliances

The battery normally supplies the immediate demand.

Installing the inverter in an enclosed cupboard

Poor ventilation can lead to overheating and reduced output.

How We Specify a Campervan Inverter System

At our Blackburn workshop, inverter planning may include:

1. Listing every intended 230V appliance
2. Checking actual appliance input ratings
3. Identifying simultaneous loads
4. Reviewing startup and surge requirements
5. Assessing battery chemistry and capacity
6. Checking the battery BMS current limit
7. Calculating battery-cable requirements
8. Selecting fuses, isolators and busbars
9. Reviewing existing solar and charging capacity
10. Assessing the installation location and ventilation
11. Deciding between dedicated sockets and integrated distribution
12. Checking whether an inverter-charger is more appropriate
13. Planning future electrical upgrades
14. Explaining the system’s practical limitations

We do not recommend installing a 3,000W inverter simply because it leaves the most options open.

The best system is the smallest properly engineered installation that reliably powers the appliances the owner genuinely needs.

Campervan and Motorhome Inverter Installation in Blackburn

WeConvert provides campervan and motorhome inverter installation and electrical upgrades from our Blackburn workshop.

We can help with:

• Pure sine wave inverters
• Inverter-chargers
• Dedicated inverter sockets
• Battery and BMS assessment
• Lithium battery upgrades
• High-current cabling
• Fuses and battery isolators
• Busbars and distribution
• Battery monitors and shunts
• Solar charging
• DC-to-DC chargers
• Mains chargers
• Off-grid electrical systems
• Existing self-build installations
• Fault finding on existing inverter systems

Our Blackburn workshop serves customers travelling from:

• Blackburn
• Darwen
• Accrington
• Burnley
• Rossendale
• Bolton
• Chorley
• Preston
• Wider Lancashire

Learn more about our campervan electrical and solar services in Blackburn.

Related guides include:

• How Much Does a Campervan Lithium Battery Upgrade Cost?
• How Much Solar Does a Campervan or Motorhome Need?
• Why Does My Leisure Battery Keep Going Flat Overnight?
• Campervan or Motorhome 12V Electrics Not Working?
• Campervan or Motorhome Mains Hook-Up Not Working?
• Campervan and Motorhome Repairs and Fault Finding

Frequently Asked Questions

What size inverter do I need for a campervan?

For laptops and small electronics, a 300–600W inverter may be enough.

Coffee machines and microwaves may require 1,500–2,000W, while kettles and induction hobs can require 2,000–3,000W.

The final choice must be based on the exact appliance ratings.

Is a 2,000W inverter enough for a campervan?

It can operate many coffee machines, microwaves and smaller high-powered appliances, subject to their input and startup demand.

The battery, BMS, cables and fuse must also support the required current.

Is a 3,000W inverter too big?

It may be unnecessary where the owner only charges laptops and phones.

A 3,000W inverter requires a system capable of safely supplying very high current when fully loaded.

Do I need a pure sine wave inverter?

Pure sine wave is recommended for most modern electronics, appliances with motors and equipment with sensitive electronic controls.

Can a 100Ah battery run a 2,000W inverter?

The inverter may switch on, but the battery may not be capable of supplying a full 2,000W load.

Check the battery’s maximum continuous discharge and BMS current limit.

Can an inverter flatten a leisure battery?

Yes.

It consumes power while supplying appliances and may also use energy while switched on with no active load.

Can I run a kettle from a campervan inverter?

Yes, with a properly designed high-power inverter and battery system.

A normal domestic kettle may require 2,000–3,000W and over 170A from a 12V battery.

Can I run a microwave from an inverter?

Yes, provided the inverter supports the microwave’s electrical input and startup demand.

Use the rating plate, not only the advertised cooking wattage.

Can an inverter use the campervan’s normal sockets?

It can where a suitable changeover, earthing and protection arrangement has been installed.

Do not energise the sockets by connecting the inverter to the external hook-up inlet.

Does a larger inverter use more battery?

Battery consumption under load is primarily determined by the connected appliance, although larger inverter models can have higher no-load consumption.

Does an inverter charge the leisure battery?

A standalone inverter does not.

An inverter-charger can charge the battery when connected to a suitable mains supply.

Can WeConvert fit an inverter to an existing conversion?

Yes, subject to inspection.

We can assess the battery, wiring, charging equipment and existing 230V installation at our Blackburn workshop.

Book a Campervan Inverter Assessment in Blackburn

To discuss an inverter installation, send us:

• Vehicle make, model and year
• Campervan or motorhome type
• Appliances you want to operate
• Photograph of each appliance rating label
• Existing battery make and capacity
• Battery BMS current rating
• Solar-panel capacity
• DC-to-DC charger details
• Mains charger details
• Existing inverter information
• Photograph of the battery installation
• Typical time spent off-grid
• Your postcode

We can then advise on an appropriate inverter size and identify whether the existing battery and charging equipment can support it.

Contact WeConvert to request a campervan or motorhome inverter installation in Blackburn.