Best 12V Inverters with a Transfer Switch

For a van or small RV that plugs into shore power and wants loads to stay on when it unplugs. Pair it with a separate charger.

For RV and van owners who want a listed, hardwired 1000 W inverter with automatic shore-power transfer. It costs more than plug-in units, but it installs like an OEM part.

A 2000 W inverter with automatic changeover for RVs that want appliances to keep running when shore power drops. You still need a separate charger.

A low-cost listed 2000 W inverter with a transfer switch, for RVs that already have a converter. It undercuts the Freedom X 2000 by a wide margin but idles higher.

For a small RV or home backup setup that wants automatic changeover between grid and battery without paying for an inverter-charger. You still need a separate charger.

A listed 1200 W hardwire inverter with a transfer switch, designed for truck sleeper cabs and work vehicles. Good value if you want a permanent install with shore-power pass-through.

A listed, compact 2000 W inverter for RVs and boats that already have a converter or charger. It handles kitchen appliances and switches to shore power on its own.

For RVs and vans that want an inverter with automatic shore-power transfer and already charge the battery another way.

For RVs that already have a converter or solar charging and want an inverter with a built-in transfer switch.

For RVs that already have a converter or solar charging and want an inverter with a built-in transfer switch.

A big inverter with automatic changeover for RVs and home backup that already have a separate charger. Renogy’s HF inverter-chargers add charging for more money.

A 3000 W RV inverter with a built-in transfer switch for rigs that charge the battery from solar or a DC-DC charger.

For RVs with a separate charger that need 3000 W for kitchen loads. It is listed, light and switches to shore power automatically, but has no built-in charger.

For RVs that already have a converter or solar charging and want an inverter with a built-in transfer switch.

The default 3,000 VA inverter-charger for a 12 V RV or boat on 30 A shore power. It costs less and idles lower than the original MultiPlus 12/3000.

Made for 50 A motorhomes and fifth wheels: one box handles split-phase shore power and 3,000 VA of inverter power on battery.

A well-rounded inverter-charger for a mid-size RV, van or boat on 30 A shore power. UL 458 certification and PowerAssist make it an easy choice for a code-compliant install.

A proven RV and boat inverter-charger with a higher surge rating than the newer MultiPlus 12/2000. Worth it if you start motor loads; otherwise the newer model is cheaper.

The long-running workhorse for 12 V RVs and boats that want to cook on battery power. The MultiPlus-II 12/3000 does the same job with lower idle draw for a little less money.

For big 12 V lithium builds that want to run an air conditioner without moving to 24 or 48 V. Check that your inspector accepts it before buying, since no UL certificate is published.

The biggest 12 V MultiPlus-II, for 50 A motorhomes with large lithium banks that want air conditioning off-grid. Confirm the listing your installer needs, since no UL certificate is published.

A good fit for a small camper or boat on a 15 A shore cord that runs electronics, a fridge and lights. Pick the 12/1200 if you want a coffee maker.

A compact all-in-one for small RVs and boats that want a coffee maker on battery and fast charging on shore power. Larger rigs on 30 A service should look at the 2000 VA models.

A compact, light inverter-charger for vans and small RVs that plug into shore power and run on lithium. It costs much less than Victron or Xantrex units with similar features.

For RVs and home backup with a big 12 V lithium bank that want fast shore charging and seamless changeover. It undercuts the major brands while matching their headline features.

A light, listed 2000 W inverter-charger that suits most mid-size RVs and boats. It handles kitchen appliances and refills the battery on shore power.

A listed low-frequency inverter-charger for cabins, backup and RVs with hard-starting motor loads. It is heavy and idles high, but few listed units surge this long.

One of the lightest listed 3000 W inverter-chargers, for RVs that want to run an air conditioner and charge a big lithium bank fast. Worth the price over the Freedom SW unless you need stacking.

A compact, listed inverter-charger for small RVs, vans and boats that mostly run electronics. It replaces a separate converter and inverter in one box.

For larger RVs and boats that want 3000 W of AC and a fast shore-power charger in one box.

A small LiFePO4 inverter-charger with app control and a bigger charger than the 55 A model. Specs come only from the Amazon pre-order listing.

A small, cheap UPS-style inverter-charger for a LiFePO4 battery in a camper or for home backup of a fridge or electronics. Specs come only from the Amazon listing.

A budget inverter-charger for home backup or a DIY RV with a 12 V lithium bank. Compare it with LiTime’s version of the same unit, which usually sells for less.

For RV builders and owners who want a listed 2000 W inverter-charger with a fast charger and RV-C integration. It costs more than the plain Freedom XC 2000.

An all-in-one RV or boat inverter-charger that recharges a lithium bank quickly on shore power. Plan on buying the remote.

For full-time RVers who want a rugged low-frequency inverter-charger that will start air conditioners and charge fast from a generator.

A small inverter-charger for a teardrop, small boat or van that plugs into shore power. It replaces a separate inverter, charger and transfer switch.

For 50 A RVs that want an inverter-charger able to pass both shore power legs through.

For larger RVs and boats that want a listed inverter-charger with fast lithium charging and generator support.

For 50 A RVs that want an inverter-charger able to pass both shore power legs through.

The largest 12 V model in SunGoldPower’s low-frequency line, for cabins that need surge capacity. At this size a 24 V or 48 V system is usually the better choice.

A budget 3000 W inverter-charger for off-grid cabins and DIY RV builds that need a big charger. Specs come only from the Amazon listing.

A popular low-frequency inverter-charger for off-grid cabins and backup systems with big motor loads.

A low-cost 3000 W inverter-charger for home backup or a DIY RV that wants UPS changeover and shore charging in one box. Pricier listed units make more sense for RVs that need certification.

For small RVs and boats that want one listed box to invert, charge and switch shore power.

A low-cost 3000 W low-frequency inverter-charger for off-grid cabins and backup systems with big motor loads. The idle draw and lack of a listing make it a poor fit for a van or RV with a small battery.

A cheap inverter-charger for keeping a LiFePO4 battery topped up and running small appliances through outages. Specs come only from the Amazon listing.

For larger RVs and boats that want a listed inverter-charger with fast lithium charging and generator support.

For full-time RVers who want a rugged low-frequency inverter-charger that will start air conditioners and charge fast from a generator.

A tough low-frequency inverter-charger for cabins and RVs that run motor loads. It is heavy and has no safety listing.

For smaller RVs and trucks that want a rugged, listed 1,000 W inverter-charger and don’t mind paying for it.

The hardwired version of the EVO-1212F, for installers wiring it into an RV subpanel.

A proven drop-in replacement for discontinued Magnum units in large RVs and boats with 30 A dual-leg wiring. For a new build, the lighter Freedom XC Pro 3000 is the better buy unless you need stacking.

For off-grid homes that need 240 V appliances but run a 12 V battery bank. Most buyers at this size would do better with a 24 V or 48 V system.

A heavy-duty inverter-charger for larger RVs that run off a generator and may want to stack two units later. The Freedom XC Pro 2000 is lighter and cheaper if you do not need stacking.