12V 400Ah LiFePO4 Battery Bank – 5.12kWh
SKU:RS-B12200x2
Product Information
12V 400Ah Battery Bank for Off-Grid, RV and Marine Systems
This bank is 2 matched 12.8V 200Ah batteries supplied with the cables to join them, giving 5.12kWh of usable lithium storage in one order. Buying them matched avoids the commonest mistake in DIY banks: mixing cells of different age or capacity, which drags the whole bank down to the weakest unit.
Rated for 4,000+ cycles, LiFePO4 can be discharged far deeper than lead-acid without damage, so more of the rated capacity is actually usable — and there is no watering, venting or equalising to keep up with. Up to 4 units (4P) in parallel.
Continuous discharge up to 200A. Backed by a 5-year warranty.
| Specification | Value |
|---|---|
| Nominal Voltage | 12.8V |
| Rated Capacity | 200Ah |
| Nominal Energy | 2560Wh |
| Cell Chemistry | LiFePO₄ |
| Cycle Life | 4,000+ |
| Charging Voltage | 14.4V |
| Max. Charge Current | 200A |
| Max. Continuous Discharge Current | 200A |
| Parallel Expansion | Up to 4 units (4P) |
| Bluetooth | No |
| Internal Heating | No |
| Certifications | UN 38.3, MSDS |
| IP Rating | IP65 |
| Warranty | 5 Years |
| Dimensions | 20.9 × 8.1 × 8.5 in |
| Net Weight | 52.9 lb |
- 1 x 12V 400Ah Battery Bank
- 2 × ALPHA 2 LITE 12V 200Ah LiFePO₄ Batteries
- 2 × 1 ft 2 AWG Battery Cables
- Batteries and cables are selected to work together for fast, hassle-free installation.
- Includes battery cables for quick system assembly.
- User manual
Estimated runtime from a full charge, after inverter losses. Real results vary with appliance efficiency, temperature and how deeply you discharge the bank.
| Appliance (approx. draw) | 5.12kWh |
|---|---|
| LED lighting (60W) | ~77 hours |
| Wi-Fi router + 2 cameras (30W) | ~6.4 days |
| 12V fridge (~600Wh per day) | ~7.7 days |
| Laptop + phone charging (100W) | ~46 hours |
| Microwave (1,000W) | ~276 minutes |
| Portable air conditioner (1,500W) | ~3.1 hours |