12V RAZORBACK- LiFePO4 – 138Ah – 1.76kWh


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12V RAZORBACK- LiFePO4 – 138Ah – 1.76kWh



Compatible Chargers & Inverters

Compatible Accessories

SKU ARZBK-12017-G1 Category SKU#: Discontinued

WORLD’S THINNEST BATTERY! BigBattery’s 12V 1.76 kWh RAZORBACK (RZBK) battery is the thinnest and safest solution for your RVs, APS systems, and other 12V applications.


At BigBattery, we pride ourselves on being energy innovators, and in only 1.5 inches of thickness, we’ve packed our advanced BMS, a 100A Breaker, and brand new LFP Razor cells. These cells are some of the safest lithium cells available today, capable of being fully punctured without releasing hazardous fumes or catching fire. When it comes to safety, the RZBK is unmatched.


If you’re looking for safe, portable, and discreet power storage, the RZBK is your answer. One of the most power dense units we offer, the RZBK can be paralleled together up to 8 times for a robust power system that doesn’t have to eat up valuable space and weight in your RV, camper van, or semi-truck. Upgrade to the RZBK today!


10 Year Savings Vs Lead-Acid


the weight and space




Safe & Reliable 

Tech Specs

System Voltage:12V
Nominal Voltage:12.8V
Chemistry: LiFePO4
kWh Capacity: 1.76kWh
Ah Capacity: 138Ah
Charging Voltage Range:13.9 - 14.5V
Max Charge Voltage:14.7V
Operating Voltage Range: 11.8 – 14.6V
Suggested Low Voltage Cutoff: 11.8 – 12.7V
BMS Cutoff Range:10.5 - 11.8V
Cell Configuration:4S
Max Continuous Discharge Current:175A
Max Continuous Power: 2240W
Max Discharge Peak Current: 350A (6 Seconds)
Max Charge Current:130A
Charge Temperature Range:0°C (32°F) / 55°C (131°F)
Discharge Temperature Range:-20°C (-4°F) / 55°C (131°F)
Optimal Discharge Temperature Range:15°C (59°F) / 35°C (95°F)
Storage Temperature Range: -5°C (23°F) / 35°C (95°F) (Max 6 Months)
Weight:48 lb (21.8 kg)
Depth:10.25 in (26 cm)
Width: 47.25 in (120 cm)
Height:1.5 in (3.8 cm)
Safety Features:Breaker (100A) & Battery Management System
(Over/Under Voltage, Over Current, &
Over/Under Temperature Protections)
Max Connections:Up To (8) Parallel
Spec Sheet Download:

Designed For 12V Applications

For more information or larger quantity inquiries, visit our B2B page or please call our sales team at #(818) 280-3091

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