ALPHA 5 PRO – 48V 100Ah LiFePO4 Server Rack Battery
SKU:RS-B5121P
Product Information
48V 100Ah LiFePO4 Battery for Off-Grid, RV and Marine Systems
5.12kWh of lithium iron phosphate storage in a single case. LiFePO₄ cells hold a flat voltage through most of the discharge, so lights do not dim and inverters do not cut out early the way they do on lead-acid.
Rated for 7,000+ 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 30 units (30P) in parallel.
A built-in heater lets it charge below freezing, which ordinary lithium cannot do safely. Continuous discharge up to 100A. Backed by a 10-year warranty.
| Specification | Value |
|---|---|
| Nominal Voltage | 51.2V |
| Rated Capacity | 100Ah |
| Nominal Energy | 5120Wh |
| Cell Chemistry | LiFePO₄ |
| Cycle Life | 7,000+ |
| Charging Voltage | 57.6V |
| Max. Charge Current | 100A |
| Max. Continuous Discharge Current | 100A |
| Parallel Expansion | Up to 30 units (30P) |
| Wireless Monitoring | Wi-Fi + Bluetooth |
| Internal Heating | Yes |
| IP Rating | IP21 |
| Warranty | 10 Years |
| Dimensions | 17.7 × 17.8 × 5.2 in |
| Net Weight | 100.9 lb |
| Communication Ports | RS485/RS232/CAN |
| Certifications | UL 1973, UL 9540A, FCC, UN 38.3, MSDS |
| Package Dimensions | 22.64 × 21.85 × 10.24 in |
| Gross Weight | 139 lb |
- 1 x ALPHA 5 PRO
- Mounting and connection hardware as listed in the specifications
- 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 |