This kit pairs BigBattery's 48V Husky 2 PWR LiFePO4 battery with a fast charger, built for golf carts, RVs, camper vans, and 48V utility fleets that need a lead-acid replacement without the maintenance. It stores 5.12kWh of energy and includes an internal BMS, IP65-rated casing, and self-heating for cold-weather charging protection. This PWR variant does not include inverter communications.
Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
E-E-A-T Intro
The Husky 2 PWR is BigBattery's most energy-dense 48V LiFePO4 battery, built for golf carts, RVs, camper vans, and 48V utility applications. It replaces a lead-acid bank with a sealed, self-heating LiFePO4 pack rated IP65 for dust and water resistance, and it uses Tier 1 battery cells with an internal BMS to manage charge and discharge safety. This kit ships with a fast charger matched to the battery.
Battery Characteristics
Chemistry: LiFePO4 (Lithium Iron Phosphate)
Voltage: 48V
Capacity: 5.12kWh
This is the PWR variant, meaning it does not include inverter communications hardware. It is built with an IP65-rated enclosure and internal self-heating for operation in cold conditions.
Wiring & Configuration Limits (Series/Parallel)
[NEEDS VERIFICATION] — Series/parallel expansion limits for the Husky 2 PWR are not specified in the source data. Do not wire this battery in series or parallel configurations beyond manufacturer-published limits without confirming BMS compatibility first.
This battery is designed for 48V applications, including golf carts, utility carts, 48V UTVs and LSVs, Class A/B/C RVs, camper vans, food trucks, commercial vehicles, and mobile/emergency backup power. It is a lead-acid replacement for these platforms — it is NOT designed as a drop-in for 12V or 36V systems, and it is NOT a starter battery.
Pro-Installer Tip
Standard lead-acid golf cart chargers are not built to recognize a LiFePO4 charge profile, and undercharging a lithium pack over repeated cycles can lead to BMS lockout or cell imbalance over time. Always use the fast charger included in this kit, or a charger explicitly rated for LiFePO4 output, rather than reusing an old lead-acid charger from a prior cart. Verify state of charge and cell balance with a shunt-based battery monitor rather than relying on dash voltage alone. Unlike lead-acid, which is typically limited to 50% depth of discharge to preserve cycle life, this LiFePO4 pack is built for deeper discharge — but confirm the manufacturer's specific DoD rating in the Resources tab before setting cart controller cutoffs.
Key Benefits
- 5.12kWh of usable LiFePO4 energy in a sealed, IP65-rated case
- Self-heating for charging protection in cold weather
- Zero maintenance — no water refills, no terminal corrosion from acid
- Faster charging than a comparable lead-acid bank when paired with the included fast charger
- Rated by the manufacturer at over 4X the lifespan of lead-acid
Technical Table
| Spec | Value |
|---|---|
| Voltage | 48V |
| Capacity | 5.12kWh |
| Chemistry | LiFePO4 |
| Ingress Protection | IP65 |
| Cold Weather Protection | Self-heating |
| Inverter Communications | Not included (PWR variant) |
| SKU | K0963 |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
Designed for 48V applications: golf carts, utility carts, 48V UTVs and LSVs, lead-acid replacement projects, Class A/B/C RVs, camper vans, food trucks, commercial vehicles, and emergency/mobile backup power.
NOT compatible with inverter communication protocols — this PWR variant excludes that hardware. NOT intended for use as a cranking/starter battery. NOT to be charged with a standard lead-acid golf cart charger; use the included fast charger or a charger rated for LiFePO4. Series/parallel expansion limits are not confirmed in available data — do not assume compatibility with an existing multi-battery bank without verification.
FAQ
Does this kit include inverter communications?
No. This is the PWR variant, which does not include inverter communications hardware.
What chemistry is the Husky 2 PWR battery?
It is a LiFePO4 (Lithium Iron Phosphate) battery.
Can I charge this with my old lead-acid golf cart charger?
No. Use the fast charger included in this kit, or a charger explicitly rated for LiFePO4 batteries. Standard lead-acid chargers are not recommended.
Does this battery work in cold weather?
Yes. It includes self-heating for cold-weather charging protection.
What vehicles is this battery designed for?
48V golf carts, utility carts, UTVs and LSVs, Class A/B/C RVs, camper vans, food trucks, commercial vehicles, and mobile/emergency backup power applications.
Warranty & Support
Refer to the "Resources (System Manuals and Warranty)" Tab above for the manufacturer's warranty terms, brochure, and full product specifications. If you have questions about fitment or configuration before you order, ask us — we always reply back.
