PowerBrick 12V 40Ah LiFePO4 battery

Country: France · Model: PowerBrick 12V-40Ah

A 12.8 V, 40 Ah LiFePO4 battery holding 512 Wh and weighing 4.65 kg. The PowerBrick 12V-40Ah discharges at 50 A continuously and withstands 80 A for up to 30 s, serving UPS units, solar and wind storage, telecom, boats and electric vehicles.

Voltage: 12.8 V
Capacity: 40 Ah
Energy: 512 Wh
Cycle life: >3000
Protection: IP65
Weight: 4.65 kg
Dimensions: 196 × 135 × 172

Technical specifications

Electrical
Nominal voltage / nominal capacity	12.8 V / 40 Ah
Stored energy	512 Wh
Volumetric energy density / specific energy	112.5 Wh/L / 110.1 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	20 A / 40 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	50 A (640 W)
Maximum discharge current (< 30 s)	80 A (1.02 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	4.65 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

At 50 A continuous the load gets 640 W, in the 80 A mode about 1.02 kW, and an inrush of up to 150 A ± 20 A passes for up to 100 ms. The 196 × 135 × 172 mm ABS case is sealed to IP65, the cells are cylindrical and the terminals take M6 bolts. The internal BMS drops the load at 10 V and stops charging at 14.8 V ± 0.1 V. Internal resistance is 50 mΩ or less, specific energy 110.1 Wh/kg. Store it at 0 °C to +50 °C, and self-discharge under 3% a month means little recharging on the shelf.

How to choose

If the same shelf needs a bit more energy, the PowerBrick Pro 12V-45Ah in the same case gives 576 Wh at 4.7 kg. When weight and space matter more, take the PowerBrick+ 12V-20Ah at 256 Wh or the Pro 12V-30Ah at 384 Wh, both 180 × 76 × 168 mm.