ESM-4825B1

Huawei 48V 25Ah ESM Battery

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Category: ESM Battery

Description

Huawei ESM-4825B1is an energy storage unit composed of lithium-ion batteries. It features better charge and discharge performance, longer service life, and less self-discharge loss than ordinary batteries. It consists of electrochemical cells, an energy storage management unit (ESMU), power and signal terminals, and mechanical parts. It can be used as an independent 48 V unit and collaborates with third-party power systems.

Parallel connection for power expansion: The maximum power (P) of N ESMs connected in parallel is less than 4 kW.
Application in class B environments with direct ventilation: The ESM can be used in indoor environments where the ambient temperature and humidity are not controlled or outdoor environments (with simple shielding measures) where the humidity can reach 100%.
Support for third-party power systems: The ESM implements lithium battery self-management so that it can be used with third-party power systems.
EMC:
- CE: EN 55032/CISPR32, Class A
- RE: EN 55032/CISPR32, Class B
Lithium batteries with different nominal voltages cannot be used together in third-party power scenarios.

Tech Specs

Item	Specifications
Nominal voltage	48 V DC
Equalized charge voltage	56.4 V DC
Float charge voltage	54.5 V DC
Maximum charge/discharge current	10 A/20 A@35°C
Maximum charge/discharge power	500 W/1000 W
Operating ambient temperature	Charge: 0°C to 45°C; discharge: –20°C to +45°C
Relative humidity	5% RH–95% RH
Atmospheric pressure	61–113 kPa
Installation mode	Conversion brackets or mounting ears
Maintenance mode	Maintained from the front
Altitude	0–4000 m (When the altitude ranges from 2000 m to 4000 m, the highest operating temperature decreases by 1°C for each additional 200 m.)
Ripple and noise	≤ 200 mV
IP rating	IP20
Dimensions (W x D x H)	340 mm x 195 mm x 130 mm (excluding mounting ears) 380 mm x 195 mm x 130 mm (including mounting ears)
Weight	≤ 15 kg

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