Five systems we build over and over at the parts desk, priced as the sum of their parts and loaded into your cart in one click. No bundle markup and no bundle discount — each line is the same price it carries on its own product page, and you can delete anything you already own before checking out. Free U.S. shipping on eligible parts, 30-day returns with a prepaid label.

Not sure which one you need? The RV solar and battery calculator sizes a system from what you actually run, or call the power desk on (833) 822-6737.

Lithium Conversion Kit — 12V, 100Ah — $976.06

The job: Replace tired lead-acid with lithium, and charge it properly.

Dropping a LiFePO4 battery in where the wet cells were is only a third of the job. A lead-acid converter or alternator keeps charging it on the wrong profile, and without a shunt you are guessing at state of charge. This is the battery, a lithium-profile shore charger, a shunt that actually counts amp-hours, and the fuse and holder the install needs.

What is in it

Add the whole kit to cart — $976.06

Value build — same job, Eco-Worthy battery — $736.06

Add the value build to cart — $736.06

Browse the Lithium Conversion Kit — 12V collection to swap a part for a different size.

Run the Air Conditioner Off Battery — $1,691.49

The job: Cool the camper overnight without starting a generator.

The usual answer to air conditioning off-grid is a rooftop unit and a 3,000W inverter with a battery bank to match, which is a five-figure conversation. The other answer is a low-draw portable unit and a station big enough to carry it: the Cybertake S2 Pro pulls a fraction of a rooftop Penguin, and the AC200P L has the rated output and the capacity to run it through a night at a sensible setting.

What is in it

Add the whole kit to cart — $1,691.49

Browse the Run the AC Off Battery — Kit collection to swap a part for a different size.

Charge While You Drive — DC-DC Kit — $412.30

The job: Fill the house battery off the alternator on a travel day.

A tow vehicle's 7-pin will trickle a few amps into the house battery and no more, and on a modern smart alternator it may put in nothing at all. A DC-DC charger takes the alternator's output and charges the house bank at a real rate on the right profile — 50A here, which is roughly 600W of charging for every hour you drive. The shunt tells you whether it is working.

What is in it

Add the whole kit to cart — $412.30

Browse the Charge While You Drive — DC-DC Kit collection to swap a part for a different size.

Four-Day Boondock Solar Kit — $1,834.35

The job: Park somewhere with no hookups for four days and not think about it.

400W on the roof and 200Ah in the bank is the size that stops a long weekend being a rationing exercise — lights, water pump, a 12V fridge, phones and a laptop, with the array replacing what the night took. The MPPT is sized on charge current, not model number: 400W at 12V is about 28A, so the 100/50 is the controller, and it is both cheaper and larger than the 150/45.

What is in it

Add the whole kit to cart — $1,834.35

Value build — 280Ah Eco-Worthy instead of the Victron 200Ah — $1,243.35

Add the value build to cart — $1,243.35

Browse the Four-Day Boondock Solar Kit collection to swap a part for a different size.

12V Fridge Swap Kit — $1,358.03

The job: Replace an absorption fridge with a compressor fridge that works off-level and off-propane.

A three-way absorption fridge wants to be level, wants propane, and gives up above about 90°F. A 12V compressor fridge does none of that, but it runs on the battery all day — roughly 40 to 60Ah in summer — so the swap is a fridge and the capacity to feed it. This is the CRX 80S, a 100Ah lithium battery to carry it overnight, the shunt, and the fusing.

What is in it

Add the whole kit to cart — $1,358.03

Browse the 12V Fridge Swap Kit collection to swap a part for a different size.

How these are priced

A kit page is a checklist you can buy from, not a discount. Every line is priced exactly as it is on its own product page, which keeps us inside the brands' pricing rules on Victron, BLUETTI and Renogy and means you never pay more for buying the system together. Our Lowest Price Guarantee applies line by line, your first-order code still works, and Shop Pay Installments can split a larger build at checkout.

Want one built for your rig instead?

These five cover the jobs we are asked about most, but sizing changes with your rig, your climate and how long you park. Two ways to get a build that fits:

Installing it yourself? The install guides cover the MultiPlus, the SmartShunt, the Orion DC-DC and roof-mounted panels step by step. Need someone to fit it? Parts installation service, or the Trade Program if you are the one doing the fitting.