Big Battery 48V MUSTANG – LiFePO4-139Ah-7kWh - AMSTG-48070-G1
MOVE LIKE THE MUSTANG! BigBattery’s 48V MUSTANG is our latest LiFePO4 solution for your vehicle. Whether you’re looking to equip your golf cart with a high-capacity power system, or outfit your RV or camper van with a battery that’ll keep you moving forward, the MUSTANG is your answer!
The MUSTANG is one of our most energy-dense models, packing 7kWh and 139Ah of capacity in a sleek, steel casing. This battery is built to maximize the capabilities of your power system, and was designed for efficient power delivery, with generous operating parameters, regardless of how far your adventures take you.
But that’s not all, the MUSTANG is equipped with state-of-the-art safety and reliability features, so you can hit the road worry-free. The MUSTANG utilizes Grade A Razor cells, the safest lithium cells on the market today, capable of being fully punctured without releasing fumes or catching fire. But we didn’t stop there! This battery is also equipped with our proprietary Beyond BMS, an advanced battery management system with triple safety redundancy, including protections such as Short Circuit, Over Current, Over/Under Voltage, and Over/Under Temperature protections.
So if you’re looking to turn your vehicle into a lean, mean, lithium-powered machine, this battery will deliver. The MUSTANG is guaranteed to provide reliable, high-capacity power storage from the moment you head out, to the moment you get back. Shop the all-new 48V MUSTANG today!
INCLUDED
(1) 4AWG 3FT BB175 to Ring Terminals Cable
(1) Screen with 16ft Cable
What our Experts Think
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Reliable 48 V lithium power — ~7 kWh capacity and 139 Ah deliver solid energy for 48 V systems like RVs, vans, golf carts, utility vehicles, or workstations.
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Long life & safe chemistry — LiFePO₄ cells with an advanced BMS provide deep‑cycle durability, thermal stability, and strong protection against over/under voltage or current.
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Good power delivery — Supports strong continuous and peak output for motors, accessories, appliances, and typical 48 V loads.
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Low maintenance & efficient use — Lithium technology means higher usable capacity, less upkeep, and better efficiency than lead‑acid equivalents.
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Easy upgrade path — Modular form factor simplifies replacing older 48 V batteries without complex rewiring or system redesign.
Q&A
Q: What is the BigBattery 48 V MUSTANG LiFePO₄ Battery (AMSTG‑48070‑G1)?
A: A 48 V lithium‑iron‑phosphate (LiFePO₄) battery module with 139 Ah capacity (~7 kWh), designed to replace 48 V lead‑acid battery banks with a compact, reliable lithium option.
Q: What makes this battery stand out?
A: LiFePO₄ chemistry for strong safety and long life, high usable capacity relative to size, stable voltage under load, and a built‑in battery management system (BMS) for protection and cell balancing.
Q: What systems or equipment is it suited for?
A: 48 V golf carts, UTVs/LSVs, utility vehicles, RV house banks, camper vans, mobile work vehicles, off‑grid power systems, and other 48 V applications needing dependable lithium power.
Q: What advantages does it offer over lead‑acid batteries?
A: Greater usable energy per charge, lighter weight, maintenance‑free operation (no watering), faster charging, stable output under load, and a longer overall lifespan.
Q: What performance and reliability can be expected?
A: Consistent voltage delivery throughout discharge, reliable power for demanding loads, minimal self‑discharge, and many more charge/discharge cycles compared with lead‑acid.
Q: Is installation straightforward?
A: Yes — designed for direct integration into existing 48 V systems as a drop‑in lithium replacement with standard battery terminations.
Q: Does it include safety features?
A: Yes, includes an integrated BMS that protects against over‑voltage, under‑voltage, over‑current, and thermal extremes while managing cell balancing to enhance safety and longevity.
Maintenance Tips
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Install the MUSTANG battery in a cool, dry, and well-ventilated area to maintain stable 48V performance and extend LiFePO4 battery lifespan.
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Regularly inspect terminals, connectors, and wiring for corrosion, looseness, or damage to ensure safe and reliable operation.
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Clean the battery casing with a soft, dry cloth to remove dust and prevent heat buildup.
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Protect the battery from direct sunlight, moisture, and extreme temperatures to preserve cell health and efficiency.
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Avoid deep discharges; monitor state of charge to maintain long-term capacity and performance.
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For long-term storage, maintain the battery at 50–60% charge and disconnect from all loads.
