CSB MSV-400 2V 400Ah VRLA-AGM Telecom Battery

Product Features

VRLA (Valve Regulated Lead Acid) battery type
AGM (Absorbent Glass Mat) technology, maintenance-free, gas recombination efficiency up to 99%
Pure lead plates with proprietary formulation elements
Designed for high-capacity float charge backup power applications
Manufactured to IEC 60896-21/22:2004, UL1989 certified (MH14533)

Application Scenarios

Backup protection for DC power at telecom base stations
Backup power for central office fiber access networks
DC power supply for microwave relay stations
Suitable for 48V DC systems in telecom equipment rooms
Backup power for broadband access equipment
Backup power solution for mobile communication core networks

Product parameters

Model：MSV-400
Voltage：2 Vdc
Nominal Capacity：400 Ah @10hr-rate
Ah Capacity：408.00 (8-Hr 1.75 VPC @ 25°C)
Ah Capacity：424.00 (20-Hr 1.75 VPC @ 25°C)
Ah Capacity：400.00 (8-Hr 1.80 VPC @ 25°C)
Max. Charge Current：120.00 A
Max. Discharge Current：2400 A
Internal Resistance：0.43 mΩ
Terminal Type：I4 thread copper alloy terminal to accept M8 bolt
Terminal Torque：126±25 Kgf·cm / 109±22 Lbf·in / 12.3±2.5 N·m
Container Material：Flame-retardant ABS (UL 94-V0)
Weight：24.90 / 54.88 kg / lb.
Length (L)：197.0±2.0 / 7.76±0.08 mm / in
Width (W)：170.0±2.0 / 6.69±0.08 mm / in
Height (H)：339.0±2.5 / 13.15±0.10 mm / in
Design Life：Up to 15 years in standby service at 25°C; Eurobat (20°C): >12 years, Very Long Life
Float Charging Voltage：2.21 ~ 2.25 Vdc/battery
Equalizing Charging Voltage：2.35 Vdc/battery
Operating Temperature：discharge -15°C to 50°C; charge/storage -15°C to 40°C

Product details

The CSB MSV-400 belongs to the MSV series and is a 2V Valve Regulated Sealed Lead Acid battery utilizing Absorbent Glass Mat (AGM) technology, achieving gas recombination efficiency of up to 99% with a maintenance-free design. It is well-suited for high-capacity backup power in telecom and similar scenarios: nominal capacity 400Ah at 1.80VPC @25°C, 10-hour rate; 408Ah at 8-hour rate (1.75VPC); 424Ah at 20-hour rate (1.75VPC); and 400Ah at 8-hour rate (1.80VPC). Pure lead construction with proprietary elements gives the battery a design float life of 15 years at 25°C and meets the Eurobat long life standard (over 12 years at 20°C). The flame-retardant ABS material (UL 94-V0) is used for the case, and the I4 threaded copper alloy terminal accepts an M8 bolt with a terminal torque of 126±25 Kgf·cm (12.3±2.5 N·m). Weight is approximately 24.90 kg, dimensions are 197.0mm (L) × 170.0mm (W) × 339.0mm (H), and internal resistance is 0.43 mΩ. For charging parameters, at 25°C the float charge voltage is 2.21~2.25 Vdc/cell, equalize charge voltage is 2.35 Vdc/cell; maximum charge current is 120.00A, maximum discharge current is 2400A. Temperature range: nominal 25°C, -15°C to 50°C during discharge, -15°C to 40°C during charge/storage. Self-discharge is low, remaining less than 10% after 90 days at 25°C; storage is possible for up to 6 months, but a full charge is required before use, and if storage temperature exceeds 25°C, an earlier charge is needed. The MSV-400 is designed for high-capacity float backup power applications, with telecom being its primary use. Manufacturing meets IEC 60896-21/22:2004 and UL1989 certification (MH14533). The combination of long life, high capacity, and maintenance-free features enables it to provide reliable support for critical backup power systems.