PowerBrick Pro 12V 45Ah LiFePO4 battery

Country: France · Model: PowerBrick Pro 12V-45Ah

The largest model of the 12 V Pro line, 12.8 V / 45 Ah and 576 Wh at 4.70 kg. The PowerBrick Pro 12V-45Ah carries 55 A continuously and up to 90 A for 30 s, and belongs in solar and wind storage, UPS, telecom, boats and electric vehicles.

Voltage: 12.8 V
Capacity: 45 Ah
Energy: 576 Wh
Cycle life: >3000
Protection: IP65
Weight: 4.7 kg
Dimensions: 196 × 135 × 172

Technical specifications

Electrical
Nominal voltage / nominal capacity	12.8 V / 45 Ah
Stored energy	576 Wh
Volumetric energy density / specific energy	126.6 Wh/L / 122.6 Wh/kg
Internal resistance	≤ 50 mΩ
Cycle life	>3,000 cycles
Self-discharge	< 3% per month
Energy efficiency	> 96%
Standard charge
Charge voltage	14.4 V ± 0.2 V (optional float voltage: max 13.36 V)
Charge mode	CC/CV (constant current / constant voltage)
Continuous charge current / maximum charge current	25 A / 45 A
BMS charge cut-off voltage	14.8 V ± 0.1 V
Standard discharge
Instant peak discharge current	150 A ± 20 A (max 100 ms)
Continuous discharge current	55 A (704 W)
Maximum discharge current (< 30 s)	90 A (1.152 kW)
BMS discharge cut-off voltage	10 V
Environment
Charge temperature range	0 °C to +60 °C
Discharge temperature range	-20 °C to +60 °C
Storage temperature	0 °C to +50 °C at 60 ± 25% RH
IP protection rating	IP65
Mechanical
Cell type	Cylindrical
Casing material	ABS
Dimensions	196 × 135 × 172 mm (L × W × H)
Weight	4.70 kg
Terminals	M6 bolt
Customs codes (for reference)
HS code	8507.60
UKTZED code (Ukraine)	8507600000
CN code (EU)	85076000

Specifications, charts and drawings are taken from the manufacturer’s technical documentation. Updated 10/31/2026. Customs codes are for reference only; the final code is determined at customs declaration for the specific model.

Description

The 55 A continuous rating equals 704 W on a 12 V bus, and 90 A for 30 s gives 1.152 kW, enough to start a compressor or pump. A pulse of up to 150 A ± 20 A is tolerated for no longer than 100 ms. The cylindrical cells sit in a 196 × 135 × 172 mm IP65 ABS case with M6 bolt terminals. The built-in BMS opens the circuit at 10 V on discharge and at 14.8 V ± 0.1 V on charge, and specific energy is 122.6 Wh/kg. Energy efficiency is above 96% and internal resistance no more than 50 mΩ.

How to choose

The same case also comes as the PowerBrick 12V-40Ah, 512 Wh at 4.65 kg, nearly the same weight with less energy. A cramped cabinet takes the PowerBrick Pro 12V-30Ah, 180 × 76 × 168 mm and 384 Wh. Above 704 W continuous, build a parallel bank.