Overview
The PowMr POW-300AH-12.8V is a LiFePO4 battery rated 12V (nominal 12.8V) with 300Ah capacity (3840Wh). It is designed as a replacement solution for lead-acid battery packs and includes a built-in BMS for protection and system safety.
Key Features
- LiFePO4 chemistry; Grade A cells (as stated)
- Cycle life: 6000+ cycles; stated test conditions: 0.2C discharge, 25 C, 80% DOD
- Fast charging: max charging current 200A; max charging rate 0.66C; stated minimum charging time 1.5 hours
- Power support (as stated): continuous load power up to 3840W
- Expandable configuration (as stated): up to 4 in series and 4 in parallel (max 4/4), total capacity up to 1200Ah, total voltage up to 51.2V, total energy up to 61.44kWh
- BMS protection functions (as stated): overvoltage, undervoltage, overcurrent, short circuit, overtemperature
- Stated service claims: 5-year warranty; 10-year design life
- Stated runtime examples at 25 C (continuous discharge): TV 100W 38.4 hours; Refrigerator 150W 25.6 hours; Microwave 500W 7.68 hours; Lighting 10W 384 hours
- Weight comparison claim (as stated): "Same Specifications", "1/3 the Weight", "1/2 the Volume" (example shown: 30KG vs 86kg)
Specifications
| Brand Name | PowMr |
| Model Number | POW-300AH-12.8V |
| Battery Type / Chemistry | LiFePO4 |
| Rated Voltage | 12V |
| Nominal Voltage | 12.8V |
| Voltage | 12V |
| Nominal Capacity | 300Ah, 3840Wh |
| Energy Density (as provided) | 3840Wh |
| Cycle Life | 6000+ |
| BMS Built-in | Yes |
| Max Continuous Current | 200A |
| Max Charging Current (as stated) | 200A |
| Max in Parallel / Series | 4/4 |
| Discharge Temperature | -20~60 C |
| Dimensions (L x W x H) | 522 x 240 x 218 mm |
| Size (as provided) | 42*58*26.5 (unit not specified) |
| Terminal Type | M8 |
| Terminal Torque | 10Nm |
| Case Material | ABS |
| Certification | CE |
| Connection | Others |
| High-concerned chemical | None |
| Origin | Mainland China |
| Weight (as provided) | 28 (unit not specified) |
| Weight (as shown in feature graphic) | 30KG |
Applications
- Vehicles (as stated): vans, RV, golf cart
- Appliances/equipment (as provided): Toaster Oven, TV, Drone, Play Station, Air Fryer, E-scooter, Vacuum Cleaner, Air Conditioner, Electric Sweeper, Robot Pool Cleaner, Fan, Washing Machine, Others
- Off-grid energy storage expansion (as stated): supports series/parallel battery bank configurations
For battery selection, system configuration (series/parallel), and charger/inverter matching guidance, contact service@tsolar.top.
Details
The PowMr POW-300AH-12.8V uses LiFePO4 chemistry to deliver 12.8V nominal power with a 300Ah (3840Wh) capacity for versatile energy storage.
Fast charging support (as stated) allows up to 200A charging current, with a claimed minimum charging time of about 1.5 hours under specified conditions.
Grade A cells (as stated) and an integrated design are paired with service claims of a 5-year warranty, 10-year design life, and 6000+ cycles (test conditions stated).
A compact ABS case (522 × 240 × 218 mm) is positioned as a space-saving replacement option versus lead-acid, with a 30 kg weight claim in the comparison.
The built-in BMS provides core protection functions (as stated), including over/under-voltage, overcurrent, short-circuit, and overtemperature safeguards.
Typical runtime examples at 25°C (as stated) include about 38.4 hours for a 100W TV and 25.6 hours for a 150W refrigerator with continuous discharge.
Multiple charging sources are supported (as stated), including a lithium battery charger, solar PV components, and a generator—using a recommended 0.66C (200A) charge current.
