Big Battery 48V 3x MUSTANG Kit – RV/Van - K0935
MOVE LIKE THE MUSTANG! BigBattery’s 48V 3x MUSTANG Kit is our latest LiFePO4 solution for your vehicle, with 21kWh of capacity. 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.
Plus, we pair these MUSTANGs with two cutting-edge 6000W EG4 split-phase inverters, equipped with their own in-depth LCD displays, so you can always stay up to date on the status and performance of your power. These multifunctional inverter-chargers boast advanced parallelability up to 96kW, built-in circuit breakers, smart load control, variable working modes, and integrated UPS modules, along with the ability to handle PV arrays of up to 8000W each, making these units the perfect companions to your 48V MUSTANGs.
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 & MUSTANG Kits today!
Included
- 3 × 48V MUSTANG - LiFePO4-139Ah-7kWh
- 2 × EG4 6kW (8kPV) OFF-GRID INVERTER
- 2 × 2AWG (Black and Red) 3FT Ring to Ring Terminal Cable
- 3 × 4AWG 4FT BB350 to Ring Terminal Cable
- 1 × Parallel Busbar
What our Experts Think
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Substantial, modular 48 V LiFePO₄ storage — Three MUSTANG modules deliver strong total capacity (~21 kWh nominal), ideal for vans, RVs, mobile homes, or off-grid cabins.
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Long life and reliability — LiFePO₄ chemistry provides several thousand cycles, far outlasting lead-acid alternatives for reduced replacement and longer service life.
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Low maintenance with high usable capacity — Deep discharges (80–100 % usable) allow more effective energy use compared to lead-acid batteries.
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Efficient 48 V system — Lower current for the same power reduces wiring losses, heat, and cable thickness — perfect for space- and weight-constrained RV/van setups.
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Scalable and flexible — Modular design allows easy expansion for additional energy needs, such as more appliances, solar, or higher loads in the future.
Q&A
Q: What is the BigBattery 48V 3× MUSTANG Kit (K0935)?
A: A 48 V LiFePO₄ battery system composed of three MUSTANG modules, forming a high-capacity battery bank for RVs, camper vans, or other 48 V systems needing reliable energy storage.
Q: What makes the MUSTANG battery modules special?
A: LiFePO₄ chemistry for safety and longevity, substantial capacity with reliable power delivery, and durable construction for mobile and off-grid applications.
Q: What applications is this kit suited for?
A: 48 V recreational vehicles, camper vans, trailers, work vehicles, off-grid mobile setups, and other 48 V systems requiring stable, high-capacity lithium power.
Q: What advantages does it have over lead-acid batteries?
A: Higher usable energy per charge, maintenance-free operation, lighter weight, stable voltage under load, and longer lifespan — ideal for heavy use and long trips.
Q: What power performance can be expected?
A: Reliable continuous discharge for RV/van loads, with three modules combined to provide extended runtime and stable voltage.
Q: Is installation straightforward?
A: Yes, the kit is designed as a drop-in replacement battery bank for most 48 V systems with proper wiring and setup
Maintenance Tips
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Install the MUSTANG Kit in a cool, dry, and well-ventilated space to maintain stable 48V performance and prolong battery lifespan.
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Regularly check terminals, connectors, and wiring for looseness, corrosion, or damage to ensure safe and reliable operation.
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Wipe the battery casings with a soft, dry cloth to remove dust and prevent heat buildup.
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Protect the kit from direct sunlight, moisture, and extreme temperatures to preserve cell health and efficiency.
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Avoid deep discharges; monitor charge levels to maintain long-term capacity and performance.
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For extended storage, maintain batteries at 50–60% charge and disconnect from all loads.
