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RUiXU Self-Heating Battery Kits | 15-30kWh | -4°F

RUiXU Self-Heating Battery Kits | 15-30kWh | -4°F
$3,776.00 - $6,953.00
$3,776.00
$3,776.00 - $6,953.00
$3,776.00
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Size: 15kWh
Self-Heating · Charges to -20°C (-4°F) · Cabinet Included

RUiXU Self-Heating Lithium Battery Kits — 15kWh, 20kWh, 25kWh & 30kWh

Standard lithium batteries stop accepting a charge once they get cold — which is a real problem if your battery bank lives in an unheated garage, a detached shop, or an outbuilding through winter. These kits solve that with RUiXU's self-heating RX-LFP48100-H modules, which use built-in heater pads powered by the charger itself to safely accept a charge at temperatures down to -20°C (-4°F).

Every kit ships with a pre-assembled 6-slot battery cabinet, so the modules arrive ready to rack rather than needing an enclosure sourced separately. Choose 15kWh, 20kWh, 25kWh, or 30kWh — and because the modules are the building block, the bank can grow to 32 units and roughly 160kWh later. Renewable Outdoors is an authorized RUiXU dealer, and every kit carries RUiXU's 10-year limited warranty.

RUiXU Self-Heating Lithium Battery Kits 15kWh 20kWh 25kWh 30kWh with 6-slot cabinet
10-Year Warranty
Lowest Price Guarantee
Authorized RUiXU Dealer
Free Shipping
0% APR Financing
Expert Support: (303) 876-7654

Why Choose the Self-Heating Kits

Charges Down to -20°C (-4°F)

Built-in heater pads warm the cells enough to accept a charge in cold weather, where a standard lithium battery would refuse entirely.

Heating Powered by the Charger

The heater pads draw power from the charger itself rather than from your stored energy, so warming the bank doesn't eat into your usable capacity.

6-Slot Cabinet Included

Every kit ships with a pre-assembled 6-slot battery cabinet — no separate enclosure to source, spec, or assemble on site.

Room to Grow Built In

Smaller kits leave spare cabinet slots, so adding capacity later is as simple as adding modules — up to 32 units and roughly 160kWh in total.

Wide Inverter Compatibility

Canbus covers Victron, SMA, Sol-Ark, Solis, Deye, Growatt, Goodwe, Sunsynk, Schneider, LuxPower and more; RS485 adds MPP, Voltronic, RCT and Alpha Outback.

DIP-Switch Setup

Set the RS485 baud rate and select your inverter protocol with onboard DIP address switches — no separate software or programming tool.

Choose Your Kit Size

Kit Size Modules Included Actual Energy Cabinet Typically Suits
15kWh 3 × RX-LFP48100-H 15.36kWh 6-slot, 3 slots spare Essential-loads backup or a small off-grid cabin, with room to double later
20kWh 4 × RX-LFP48100-H 20.48kWh 6-slot, 2 slots spare Whole-home backup for a smaller or efficient home
25kWh 5 × RX-LFP48100-H 25.60kWh 6-slot, 1 slot spare Whole-home backup with air conditioning or electric heat
30kWh 6 × RX-LFP48100-H 30.72kWh 6-slot, fully populated Large home, full off-grid, or light commercial use

Actual energy figures are the sum of each module's 5,120Wh rating — RUiXU names these kits by rounded capacity, so the real delivered energy is slightly higher than the label in every case. Growing past 6 modules means adding a second cabinet; call us at (303) 876-7654 and we'll plan the expansion path with you.

What's Included

RUiXU self-heating battery kit with 6-slot cabinet

In the Box

  • 3, 4, 5, or 6 × RUiXU self-heating 48V server rack batteries (RX-LFP48100-H), matching the kit size you select
  • 1 × RJ45/CAT5e patch cable per battery
  • 1 × ground cable per battery
  • 1 × set of 30cm parallel 4AWG cables per battery
  • 1 × pre-assembled 6-slot battery cabinet

Module Specifications (RX-LFP48100-H)

Nominal Voltage 51.2V
Nominal Capacity 100Ah @ 0.2C
Nominal Energy 5,120Wh per module
Cell Chemistry LiFePO4 (Lithium Iron Phosphate), self-heating
Self-Heating Charge Rating Safely charges down to -20°C (-4°F) via a standard or solar charger; heater pads draw power from the charger itself
Form Factor 19" rack-mount, 3U
Dimensions (W×D×H) 19" × 18.1" × 5.23" (482.6 × 460 × 133mm)
Weight ~103.6 lbs (47 kg) per module
Recommended Charge Current 50A
Cycle Life ≥6,000 cycles @ 90% DOD
Operating Temperature 14°F to 122°F
Storage Temperature 14°F to 113°F
Canbus Compatibility Victron, SMA, Studer Innotec, Sofar, Sol-Ark, Solis, Goodwe, Deye, Growatt, SAJ, LuxPower, Megarevo, INVT, Sermatec, TBB, MUST, Sunsynk, Schneider
RS485 Compatibility MPP, Voltronic, RCT, Alpha Outback
Expandability Up to 32 modules in parallel (5kWh–160kWh), no external controller required
Warranty 10-Year Limited Warranty

The self-heating rating, voltage, capacity, energy, dimensions, and weight are confirmed against RUiXU's own manufacturer page for the RX-LFP48100-H. Recommended charge current, cycle life, and operating/storage temperature come from Renewable Outdoors' own product listing for that module, since RUiXU publishes those figures only inside a spec sheet served through a script-based download button rather than as text or a direct PDF link. We'd rather tell you where a number came from than present an unverified figure as manufacturer-confirmed.

10-Year Warranty

Every module in every kit is backed by RUiXU's full 10-year limited manufacturer warranty.

Lowest Price Guarantee

Found the same kit cheaper elsewhere? Call us at (303) 876-7654 before you buy.

Authorized RUiXU Dealer

Genuine hardware, full manufacturer support, and expert sizing advice from our team.

RUiXU Self-Heating Lithium Battery Kits: Frequently Asked Questions

Do I actually need the self-heating version?
You need it if the batteries themselves will get cold — an unheated garage, a detached shop, a well house, or an outdoor enclosure in a climate with real winters. If the bank lives in a conditioned space that stays above freezing, the standard kits will serve you just as well for less complexity. Not sure? Call us at (303) 876-7654 and describe where it's going.
How cold can it get before the batteries stop charging?
The RX-LFP48100-H modules can safely accept a charge at temperatures down to -20°C (-4°F) from a standard charger or a solar charger. Built-in heater pads warm the cells first, drawing their power from the charger rather than from your stored energy.
Does the heating drain my battery?
No. The heater pads draw power from the charger itself, so warming the bank doesn't consume the energy you've already stored. That matters most in winter, when you want every usable kilowatt-hour going to your loads.
Does the cabinet really come included?
Yes. Every self-heating kit ships with one pre-assembled 6-slot battery cabinet, regardless of which capacity you choose — so there's no separate enclosure to source or assemble. The 15kWh kit arrives with 3 of the 6 slots filled, leaving room to expand later.
How many batteries come in each kit?
The 15kWh kit includes 3 modules (15.36kWh actual), the 20kWh kit includes 4 (20.48kWh), the 25kWh kit includes 5 (25.6kWh), and the 30kWh kit includes 6 (30.72kWh). Each module is a 5.12kWh RX-LFP48100-H, and each comes with its own patch cable, ground cable, and 30cm parallel 4AWG cable set.
Can I add capacity later?
Yes. If you start with a 15kWh, 20kWh, or 25kWh kit, the included 6-slot cabinet already has spare slots to fill. Beyond 6 modules you'll add a second cabinet — the system supports up to 32 modules in parallel, roughly 160kWh, with no external controller.
What inverters do these work with?
Over Canbus the modules support Victron, SMA, Studer Innotec, Sofar, Sol-Ark, Solis, Goodwe, Deye, Growatt, SAJ, LuxPower, Megarevo, INVT, Sermatec, TBB, MUST, Sunsynk, and Schneider. Over RS485 they support MPP, Voltronic, RCT, and Alpha Outback. Protocol selection is done with DIP switches on the module itself.
How much does a kit weigh?
Each module weighs about 103.6 lbs, so a 15kWh kit is roughly 311 lbs of battery, a 20kWh kit about 414 lbs, a 25kWh kit about 518 lbs, and a 30kWh kit about 622 lbs — plus the cabinet. That's a genuine structural consideration; have your installer confirm the floor can carry it.
Do I need an electrician to install this?
Yes, we recommend it. Wiring a 48V bank of this size involves high-current DC connections, proper grounding, and correct inverter communication setup — work best done by a licensed electrician familiar with your local code and inspected before commissioning.
What's covered under warranty, and do you offer financing?
Every module carries RUiXU's 10-year limited warranty, and as your retailer we can help you navigate a claim. We also offer 0% APR financing through Affirm at checkout and back every kit with our Lowest Price Guarantee — if you find a better price elsewhere, call us at (303) 876-7654 before you order.
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