Renogy 400-Watt 12-Volt Solar Complete Kit w/ 2 Packs of 12-Volt 100Ah Lithium Iron Phosphate Battery w/ Self-Heating Function

The Renogy 400W 12V Complete Solar Kit with two self-heating 100Ah lithium batteries (RKIT400DLP2) is a full off-grid system in one order: four 100W 16BB N-Type panels, a Rover Li 40A MPPT charge controller, two 12V 100Ah smart LiFePO4 batteries with Bluetooth and self-heating, a 2000W pure sine wave inverter, and the mounting, wiring, and fusing to connect it all. The self-heating batteries are the piece that matters in cold country: they warm themselves so charging can continue below freezing.

Who This Kit Is For

This kit suits tool sheds, hunting cabins, and medium to large RVs that get used year-round, including in real winter. Lithium iron phosphate makes sense for daily cycling: you can use most of the bank's roughly 2,400Wh nominal capacity each cycle instead of the ~50% practical limit of AGM, and each battery weighs 26.9 lb versus 63.9 lb for the AGM equivalent, per Renogy. If your site is fair-weather-only and budget rules, the AGM version of this kit is the lower-cost path; this one is built for cold mornings and heavy rotation.

Key Features

• Complete pre-matched system: panels, MPPT controller, lithium storage, pure sine inverter, cables, mounts, and fuses
• Two 12V 100Ah smart LiFePO4 batteries with built-in Bluetooth and self-heating for sub-freezing charging, per Renogy
• Four 100W 16BB N-Type panels; 10-year material and workmanship plus 25-year power output warranty, per Renogy's datasheet
• Rover Li 40A MPPT controller (max PV input 520W at 12V, per Renogy) leaves about 120W of expansion headroom
• 2000W continuous / 4000W peak pure sine wave inverter, per Renogy, for microwaves, coffee makers, and tools one at a time
• BT-2 Bluetooth module included; batteries also report state of charge to the Renogy app on their own
• Per Renogy, the system generates 2,000 to 2,500Wh daily, based on 5 to 6 peak sun hours per day

Why Renogy

Renogy has built off-grid equipment since 2010 and sells this kit as a matched system: panel string voltage sits inside the controller's window, the controller has the correct LFP profile, and the fusing and cable gauges are specified by Renogy rather than left to guesswork. Full manuals and app support are published for every component.

What's In the Box

Per Renogy's packing list for the lithium configuration:

• 100W 16BB N-Type solar panel x 4
• Rover Li 40A MPPT charge controller x 1
• 12V 100Ah smart LiFePO4 battery with Bluetooth and self-heating x 2
• 2000W 12V pure sine wave inverter x 1
• Solar panel mounting Z-brackets x 4 sets
• Solar Y branch connectors (MMF+FFM) x 3
• 20 ft 10AWG solar panel to charge controller adaptor kit x 1
• 8 ft 8AWG battery to charge controller tray cables x 1
• 16 in 4AWG copper battery interconnect cables x 2
• 1 ft 8AWG ANL fuse cable x 1
• 40A ANL fuse set x 1
• 30A solar connector waterproof in-line fuse holder x 1
• Battery inverter cables for 3/8 in lugs x 2
• BT-2 Bluetooth module x 1

Specifications

All specifications per Renogy.

What Will It Run?

Renogy's published estimate is 2,000 to 2,500Wh per day at 5 to 6 peak sun hours. Our more conservative planning figure for northern or winter sun: 400W x 4 h x 0.75 = roughly 1,200Wh per day. On storage, a conservative 80% usable assumption gives about 1,900Wh per full cycle from the bank.

• A realistic cabin day: LED lights (75Wh) + 12V fridge (about 1,100Wh) + phone/laptop charging (200Wh) + water pump (100Wh) = roughly 1,475Wh; sustainable in decent sun, and the bank covers a dark day on its own.
• Inverter loads: a 900W microwave for 10 minutes uses about 150Wh; a 1,500W space heater, by contrast, would flatten the whole bank in under 90 minutes, so heat with propane or wood, not electricity, at this system size.
• Winter note: self-heating uses some battery energy in hard cold; budget extra margin on sub-freezing days.

All figures are estimates with stated assumptions.

Warranty & Support

Per Renogy's published warranty terms: 10-year material and workmanship plus 25-year power output on the panels (datasheet), 3-year material and workmanship on Rover series controllers, and a 7-year prorated material and workmanship warranty on Renogy's RBT12100LFP-BT series 12V 100Ah smart lithium batteries. OffGrid Horizon is a family-owned authorized Renogy dealer and handles any claim with Renogy for you: (302) 496-3554.

Shipping

Ships within the United States. The kit arrives as multiple cartons (panels, batteries, and components boxed separately) that may be delivered on different days; lithium batteries ship by hazmat-compliant ground methods. Inspect everything on arrival and call (302) 496-3554 with any delivery questions.

Frequently Asked Questions

Can I add panels later?

One more 100W panel fits: the Rover Li 40A accepts up to 520W of PV at 12V per Renogy, and the kit ships with 400W. Past that you would move to a larger controller.

Can I add more batteries later?

Yes. Per Renogy, these smart lithium batteries support expansion in parallel and series (up to a 4P4S arrangement). Use the same model and similar age when paralleling. If you already know you need much more storage, it can be simpler to build around one larger battery such as the Core 12V 300Ah self-heating LiFePO4 from the start.

What does self-heating actually do?

LiFePO4 cells should not be charged below freezing. Per Renogy, these batteries warm themselves when temperatures drop so charging can continue, which is the difference between a system that works in January and one that waits for spring.

Roof or ground mount?

Included Z-brackets handle flat roof mounting on an RV, shed, or cabin. Ground mounting with a tilt rack (not included) earns back meaningful harvest in winter at this array size.

Can this combine with my RV's alternator?

Yes, add a separate DC-DC charger between the starter battery and this bank; the Rover controller covers solar only. Call us to size one for your alternator.

How is this different from the AGM version of the kit?

Same panels, controller, and inverter. This version's batteries are 37 lb lighter each, usable to a much deeper discharge, self-heating, and Bluetooth-monitored, per Renogy; the AGM version costs less upfront and includes a shunt-type battery monitor instead.

Is everything here, or will I need parts from the hardware store?

The electrical chain is complete as listed above. You may still want fasteners or sealant appropriate to your specific roof, and conduit if your install calls for it; see our Renogy collection for accessories.

OffGrid Horizon is a family-owned authorized Renogy dealer. Wondering if 400W is enough for your winters? Call (302) 496-3554 and we will run your numbers before you buy.