The Renogy REGO 12V 104Ah Super Slim is a 2.4-inch-thick solid-state LiFePO4 battery with built-in self-heating, Bluetooth, and an IP67 aluminum housing. It is made for installations where a conventional battery box simply does not fit: under seats, under floors, behind cab walls, and inside truck canopy systems.
Who This Battery Is For
Overlanders, 4WD tourers, truck-camper owners, and van builders who need real capacity in dead space rather than cargo space. At 22.8 x 11.4 x 2.4 in it mounts flat under a floor or upright behind a seat back, and the 8-year warranty term (per Renogy) plus 6,000-cycle rating make it a fit for vehicles you plan to keep. Self-heating means winter trips do not end your ability to recharge from the alternator or solar.
Key Features
- 12.8V 104Ah / 1,331Wh in a 2.4 in profile; 29.5 lb with an aluminum alloy housing
- Rated for 6,000 cycles at 80% depth of discharge, per Renogy
- Self-heating: 150W heater activates below 41°F and shuts off above 50°F, warming about 50°F per hour, per Renogy
- 100A max continuous charge, 200A max continuous discharge, 290A peak for 30 seconds, per Renogy
- Built-in Bluetooth plus dual 7-pin CAN ports (RV-C) for the Renogy app or Renogy ONE Core monitoring
- IP67 dust-tight, water-resistant enclosure
- BMS with more than 60 protections and alarms, including over/under-voltage, over-current, temperature, and short-circuit protection, per Renogy
- Expandable up to 4 in series or 4 in parallel, to 4S4P (48V 416Ah, about 21.3kWh), per Renogy
Why Renogy
Renogy is an established maker of off-grid solar and battery equipment, and publishes test and safety documentation for this battery (MSDS, UN38.3, FCC, CE, PSE, RoHS, RCM, IC, UKCA). The REGO line — batteries, inverter chargers, and monitoring — is designed as one connected system, which keeps wiring, communication, and support consistent.
Specifications
| SKU |
RBT12104LFP-SSBH-G1-US |
| Chemistry |
Solid-state lithium iron phosphate (LiFePO4) |
| Nominal voltage |
12.8V |
| Rated capacity |
104Ah / 1,331Wh (0.5C at 77°F), per Renogy |
| Cycle life |
6,000 cycles (80% DOD), per Renogy |
| Self-heating |
150W; activates below 41°F, deactivates above 50°F; heating rate about 50°F per hour, per Renogy |
| Max continuous charge current |
100A (charge voltage 14.4V) |
| Max continuous discharge current |
200A (290A peak, 30 seconds) |
| Charge temperature range |
14°F to 131°F (reduced 0.1C charge rate from 14°F to 32°F), per Renogy |
| Discharge temperature range |
-4°F to 140°F |
| Storage |
-4°F to 140°F; store at 30-50% charge and recharge at least every 3 to 6 months, per Renogy |
| Expansion |
Up to 4 in series or 4 in parallel; 4S4P max (48V 416Ah, about 21.3kWh), per Renogy |
| Dimensions |
22.8 x 11.4 x 2.4 in |
| Weight |
29.5 lb |
| Housing |
Aluminum alloy, IP67 |
| Terminals |
M8; standard (M8 x 1.25 x 12 mm) and long (M8 x 1.25 x 16 mm) bolts included; recommended torque 70.8 in-lb |
| Communication |
Bluetooth (Renogy app) and dual 7-pin CAN ports with RV-C; Renogy ONE Core compatible |
| Certifications |
MSDS, UN38.3, FCC, CE, PSE, RoHS, RCM, IC, UKCA, per Renogy |
| Warranty |
8-year prorated warranty, per Renogy |
| What's included |
Battery x1, long terminal bolts x2, terminal bolts x2, insulation sleeves x2, user manual x1 (mounting bracket kit sold separately by Renogy) |
| Documentation |
User manual (PDF) · Renogy limited warranty (PDF)
|
Cold Weather, Explained
This battery combines two cold-weather approaches. First, self-heating: below 41°F a 150W internal heater warms the cells at roughly 50°F per hour and shuts off above 50°F, per Renogy — from -4°F, the manual estimates about two hours to reach charging temperature. Second, the BMS permits a reduced-rate charge (0.1C, about 10A) between 14°F and 32°F, so a gentle top-up is possible even before the battery is fully warm. Below those limits, protection circuits block charging entirely to prevent cell damage, and discharge cuts off at -4°F.
System Fit & Expansion
The 200A continuous discharge supports roughly 2,500W of continuous 12V inverter load — pair a single battery with loads inside that limit, or run two in parallel to feed the Renogy REGO 3000W 12V split-phase inverter charger at full output. Its CAN/RV-C communication is built for the REGO ecosystem, so battery data can flow to compatible REGO equipment and Renogy ONE Core. For solar, keep controller output within the 100A charge limit — the Renogy 800W kit with REGO 60A MPPT controller fits, and roof space permitting, the Renogy 320W N-type panel four-pack scales the array. Per Renogy the battery expands to 4S, 4P, or 4S4P; series banks change system voltage and need equipment rated for it.
Warranty & Support
Per Renogy's published warranty schedule, this model (RBT12104LFP-SSBH) carries an 8-year prorated warranty — among the longer terms in Renogy's battery line. OffGrid Horizon is a family-owned authorized Renogy dealer, so your purchase is eligible for Renogy US warranty service. Call (302) 496-3554 with fitment or wiring questions.
Shipping
At 29.5 lb this battery typically ships as a single ground parcel within the US; multi-battery orders may ship LTL freight on a pallet. Inspect packaging before signing for freight deliveries; note any damage with the driver and call us at (302) 496-3554.
Frequently Asked Questions
Will it really fit under a seat or floor? The case is 22.8 x 11.4 x 2.4 in — measure your cavity and allow clearance for M8 terminals and cable bend radius. Renogy sells a matching bracket kit separately for secure mounting.
Can I mix it with my other lithium batteries? No. Connect only identical REGO 104Ah Super Slim batteries of similar age and state of charge, up to 4S, 4P, or 4S4P per Renogy.
Can I charge from my vehicle's alternator? Yes, through a DC-DC charger with a LiFePO4 profile sized within the 100A max charge current. Direct alternator connection is not recommended.
What charger profile should I use? A lithium (LiFePO4) profile with a 14.4V charge voltage, per Renogy. Lead-acid and AGM profiles may not charge it fully or correctly.
How should I store it over winter? Per Renogy: disconnect it, store between -4°F and 140°F at 30-50% state of charge, and recharge at least once every 3 to 6 months.
Is it safe mounted inside the cabin? LiFePO4 batteries do not off-gas during normal operation the way flooded lead-acid batteries do, and this model adds an IP67-sealed aluminum housing. Follow the mounting and clearance guidance in the Renogy manual.
How do I check state of charge? Over Bluetooth in the Renogy app, or through the CAN ports with Renogy ONE Core for long-range and multi-device monitoring.
Building out a truck or van and not sure the slim format is right? Call OffGrid Horizon at (302) 496-3554 — we will talk through your layout before you buy.
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