MSJ-500 csb battery Suitable for Provides DC backup power for telecom base stations

Product Features

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

Application Scenarios

Provides DC backup power for telecom base stations
Uninterruptible backup for optical access network central office equipment
DC power supply for microwave relay stations
48V DC system support in telecom equipment rooms
Backup power solution for broadband access equipment
Backup power support for mobile communication core networks

Product parameters

Model：MSJ-500
Voltage：2 Vdc
Nominal Capacity：500 Ah @10hr-rate
Ah Capacity：506.40 (8-Hr 1.75 VPC @ 25°C)
Ah Capacity：524.00 (20-Hr 1.75 VPC @ 25°C)
Ah Capacity：493.60 (8-Hr 1.80 VPC @ 25°C)
Max. Charge Current：150.00 A
Max. Discharge Current：3000 A
Short Circuit Current：9953 A
Internal Resistance：0.28 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：36.50 / 80.45 kg / lb.
Width (W)：171.0±2.0 / 6.73±0.08 mm / in
Height (H)：339.0±2.5 / 13.15±0.10 mm / in
Depth (D)：241.0±2.5 / 9.49±0.10 mm / in
Design Life：Up to 20 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 MSJ-500 belongs to the MSJ series and is a 2V VRLA-AGM valve regulated sealed lead acid battery officially designated for telecom applications. This series focuses on VRLA 2V high capacity and extended service life for telecom scenarios, with a design life of up to 20 years in standby float service. The product utilizes valve regulated sealed lead acid construction and Absorbent Glass Mat (AGM) technology, achieving a gas recombination efficiency of up to 99%. It features a maintenance-free design and uses pure lead construction with proprietary elements. In terms of capacity, the MSJ-500 has a nominal capacity of 500Ah, tested at 1.80VPC, 25°C, 10-hour rate. Other capacity data are as follows: 506.40Ah at 8-hour rate, 1.75VPC, 25°C; 524.00Ah at 20-hour rate, 1.75VPC, 25°C; and 493.60Ah at 8-hour rate, 1.80VPC, 25°C. Maximum charge current is 150.00A, maximum discharge current is 3000A, short-circuit current is 9953A, and internal resistance is 0.28mΩ. For electrical and temperature parameters, at 25°C the float charge voltage ranges from 2.21 to 2.25Vdc/battery, and the equalization charge voltage is 2.35Vdc/battery (25°C). Nominal operating temperature is 25°C, discharge temperature range is -15°C to 50°C, and charge and storage temperature range is -15°C to 40°C. Self-discharge performance: less than 10% after 90 days storage at 25°C, with a maximum storage of 6 months; a full charge is required before use, and if storage temperature exceeds 25°C, an earlier charge is needed. Structural details: The MSJ-500 is equipped with I4 threaded copper alloy terminals compatible with M8 bolts, with a terminal torque of 126±25 Kgf·cm, 109±22 Lbf·in, or 12.3±2.5 N·m. The case is flame-retardant ABS material meeting UL 94-V0. Weight is 36.50kg (80.45 lb), width is 171.0±2.0mm, height is 339.0±2.5mm, and depth is 241.0±2.5mm. The product is manufactured according to IEC 60896-21/22:2004 and recognized under UL1989 (MH14533). The MSJ-500 is suitable for high-capacity float backup power applications in the telecom field. In 25°C standby float service, its design life can reach 20 years; according to the Eurobat standard, it exceeds 12 years at 20°C and is classified as Very Long Life. The maintenance-free AGM technology and valve regulated sealed construction reduce maintenance requirements in float backup scenarios, making it ideal for telecom facilities requiring long-term reliable backup power.