This kit bundles four BigBattery HUSKY 2 12V batteries, wired to build a 48V bank for RVs, marine systems, and off-grid backup use. If you're replacing lead-acid in a 48V setup, this is a pre-packaged way to do it as a matched set of four.
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: What This Kit Is
The 12V 4X HUSKY 2 KIT is a set of four HUSKY 2 batteries from BigBattery, intended as a lead-acid replacement in 48V applications. BigBattery markets this configuration for Class A, B, and C RVs, camper vans, tow-behind trailers, marine systems, boats and yachts, commercial vehicles, food trucks, emergency backup, and light towers and signs. Manufacturer specification data for cell chemistry, exact Ah/Wh capacity, BMS discharge limits, cycle life, dimensions, and operating temperature range was not included in the source material provided for this listing — those figures are marked [NEEDS VERIFICATION] below and should be confirmed on the Resources tab before you order.
Battery Characteristics
Chemistry: [NEEDS VERIFICATION] — not specified in source data. Group Size: [NEEDS VERIFICATION] — not specified in source data. What we do know from the manufacturer: this kit is designed for 48V applications and is positioned as a lead-acid replacement across the vehicle and marine categories listed above.
Wiring & Configuration Limits (Series/Parallel)
This kit contains four 12V HUSKY 2 units and is designed for 48V applications, which indicates a 4-unit series configuration. BigBattery's source material does not specify additional parallel expansion limits, maximum series stacking beyond this kit, or a BMS-communication protocol for paralleling multiple kits. Do not assume this kit can be paralleled with other kits or battery types without manufacturer confirmation. Do NOT mix this kit with lead-acid, AGM, or other lithium chemistries in the same bank. Do NOT wire batteries of different ages or cycle counts together in series or parallel.
Pro-Installer Tip
Wiring four 12V batteries in series to build a 48V bank exposes any single weak unit to the whole string — one undercharged or mismatched battery drags down usable capacity for all four and can trip a BMS lockout under load. Confirm each unit reaches full charge independently before connecting into the series string, and monitor the pack afterward with a shunt-based battery monitor so you can catch voltage drift between units early. For lithium chemistries, this generally means charging to see the BMS cut off charge current at full, rather than relying on lead-acid float voltage as a reference point. Because manufacturer depth-of-discharge and cycle-life figures were not provided for this kit, do not assume 100% DoD is safe until you confirm that spec — treat it as [NEEDS VERIFICATION] and check the Resources tab.
Key Benefits
- Pre-configured 4-unit kit designed for 48V systems, reducing individual battery matching guesswork.
- Positioned as a direct lead-acid replacement across RV, marine, commercial, and backup power applications.
- Single SKU covers the full 4-battery bank for simpler ordering.
Technical Table
| Spec | Value |
|---|---|
| Kit contents | 4x HUSKY 2 12V batteries |
| Designed voltage application | 48V (series-wired kit) |
| Chemistry | [NEEDS VERIFICATION] |
| Capacity (Ah) | [NEEDS VERIFICATION] |
| Capacity (Wh) | [NEEDS VERIFICATION] |
| Max Continuous Discharge (A) | [NEEDS VERIFICATION] |
| Peak Discharge (A) | [NEEDS VERIFICATION] |
| Cycle Life | [NEEDS VERIFICATION] |
| Operating Temperature Range | [NEEDS VERIFICATION] |
| Low-Temperature Charging Protection | [NEEDS VERIFICATION] |
| Dimensions (per unit) | [NEEDS VERIFICATION] |
| Weight (per unit) | [NEEDS VERIFICATION] |
| Terminal Type | [NEEDS VERIFICATION] |
| SKU | K0749 |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Options & SKUs
| Variant | SKU | Price (USD) |
|---|---|---|
| Standard | K0749 | 5905.00 |
Compatibility & Fitment
This kit is intended for 48V applications, including Class A, B, and C RVs, camper vans, tow-behind trailers, marine systems, boats and yachts, commercial vehicles, food trucks, emergency backup power, and light towers and signs, per the manufacturer. It is marketed as a lead-acid replacement.
This kit is NOT confirmed compatible with standard lead-acid chargers unless the manufacturer's charging documentation states otherwise — check the Resources tab before connecting any charger. It is NOT to be paralleled with additional kits or mixed with other battery chemistries or ages without manufacturer confirmation. Charger type, inverter compatibility, and BMS communication protocol are NOT specified in the source data provided and should be confirmed before purchase.
FAQ
Is this kit ready to wire for a 48V system?
Yes. The kit contains four 12V HUSKY 2 batteries and is designed for 48V applications, per the manufacturer. Confirm exact wiring diagrams and any BMS communication requirements in the Resources tab before installation.
What chemistry are the HUSKY 2 batteries in this kit?
Chemistry was not specified in the manufacturer data available for this listing. This is marked [NEEDS VERIFICATION] — please check the Resources tab or contact us to confirm before ordering.
Can I add more kits in parallel to increase capacity?
The source data does not confirm parallel expansion limits for this kit. Do not parallel additional kits or mix with other battery types until you confirm manufacturer specifications.
Is this a direct replacement for a lead-acid 48V bank?
The manufacturer positions this kit as a lead-acid replacement for 48V applications, including RVs, marine systems, and commercial vehicles. Confirm charger compatibility separately, since standard lead-acid chargers are not confirmed suitable for this kit.
Warranty & Support
Warranty terms for this kit are covered in the manufacturer documentation, not in the data provided for this page. Please refer to the "Resources (System Manuals and Warranty)" Tab above for full warranty details. If you have questions before ordering, ask us — we always reply back.
