CSB MSV-650 2V 650Ah VRLA-AGM Telecom Power Battery

Product Features

Valve Regulated Lead Acid (VRLA) design
Absorbent Glass Mat (AGM) technology, maintenance-free, with gas recombination efficiency up to 99%
Proprietary elements with pure lead construction
Specifically developed for high-capacity float charge backup power applications
Manufactured to IEC 60896-21/22:2004 and UL1989 certified (MH14533)

Application Scenarios

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

Product parameters

Model：MSV-650
Voltage：2 Vdc
Nominal Capacity：650 Ah @10hr-rate
Ah Capacity：636.80 (8-Hr 1.75 VPC @ 25°C)
Ah Capacity：692.00 (20-Hr 1.75 VPC @ 25°C)
Ah Capacity：624.00 (8-Hr 1.80 VPC @ 25°C)
Max. Charge Current：195.00 A
Max. Discharge Current：3900 A
Internal Resistance：0.38 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：41.40 / 91.25 kg / lb.
Length (L)：307.0±2.5 / 12.09±0.10 mm / in
Width (W)：171.0±2.0 / 6.73±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-650, part of the MSV series, 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 long service life, serving large-scale emergency and telecom scenarios. Nominal voltage is 2 Vdc; at 25°C and 1.80 VPC, the 10-hour rate nominal capacity is 650 Ah; at 25°C and 1.75 VPC, the 20-hour rate capacity is 692.00 Ah; at the same temperature and 1.75 VPC, the 8-hour rate capacity is 636.80 Ah; for the 8-hour rate at 1.80 VPC and 25°C, the capacity is 624.00 Ah. Electrically, the MSV-650 can withstand a maximum charge current of 195.00 A and a discharge current of 3900 A, with an internal resistance of only 0.38 mΩ. At 25°C, the float charge voltage range is 2.21 to 2.25 Vdc/battery, and the equalize charge voltage is 2.35 Vdc/battery. The terminal uses an I4 threaded copper alloy, compatible with M8 bolts, with a torque value of 126±25 Kgf·cm, 109±22 Lbf·in, or 12.3±2.5 N·m. Dimensions are 307.0±2.5 mm in length, 171.0±2.0 mm in width, and 339.0±2.5 mm in height, with a weight of 41.40 kg. The flame-retardant ABS case meets UL 94-V0. For temperature adaptability, the nominal temperature is 25°C; discharge can be performed from -15°C to 50°C, while charging and storage are limited to -15°C to 40°C. The battery combines valve regulated sealed lead acid construction with Absorbent Glass Mat (AGM) technology, achieving up to 99% gas recombination efficiency for maintenance-free operation. The pure lead construction with a proprietary element formula makes it suitable for high-capacity float backup power requirements. Manufacturing complies with IEC 60896-21/22:2004 and is UL1989 recognized (MH14533). Under float charge at 25°C, the design life can reach 15 years; under Eurobat (20°C) standards, it exceeds 12 years, placing it in the very long life category. Storage characteristics: The MSV-650 has low self-discharge, less than 10% in 90 days at 25°C, and can be stored for up to 6 months at 25°C, but must be fully charged before use; if storage temperature exceeds 25°C, charging should be done earlier. Therefore, it is suitable for fields requiring long-term float backup such as telecom.