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

Product Features

Valve Regulated Lead Acid (VRLA) Battery
Maintenance-Free, Absorbent Glass Mat (AGM) Technology for Efficient Gas Recombination of up to 99%
Pure Lead Construction and Proprietary Elements
Designed for High Capacity Float Service Standby Power Applications
Built in Accordance with IEC 60896-21/22:2004 and UL1989 Recognized (MH14533)

Application Scenarios

Telecom base station DC power backup
Optical access network central office backup
Microwave relay station DC supply
Telecom room 48V DC system
Broadband access equipment backup power
Mobile core network backup

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 belongs to the MSV series and is a 2V VRLA-AGM valve-regulated sealed lead-acid battery, with telecommunications as its official application area. This series is positioned as a VRLA 2V high-capacity, long service life telecom battery series for large-scale emergency and communication applications. The battery has a nominal voltage of 2 Vdc, a 10-hour rate nominal capacity of 650 Ah at 1.80 VPC, 25°C, a 20-hour rate capacity of 692.00 Ah at 1.75 VPC, 25°C, an 8-hour rate capacity of 636.80 Ah at 1.75 VPC, 25°C, and 624.00 Ah at 1.80 VPC, 25°C. In terms of electrical performance, the MSV-650 has a maximum charge current of 195.00 A, a maximum discharge current of 3900 A, and an internal resistance of 0.38 mΩ. Float charge voltage is 2.21 to 2.25 Vdc/battery (25°C), and equalizing charge voltage is 2.35 Vdc/battery (25°C). Terminals use I4 threaded copper alloy terminals that accept M8 bolts, with a terminal torque of 126±25 Kgf·cm, 109±22 Lbf·in, or 12.3±2.5 N·m. The battery 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 case material is flame-retardant ABS, compliant with UL 94-V0. For operating temperature, the nominal temperature is 25°C, the discharge temperature range is -15°C to 50°C, and the charge and storage temperature range is -15°C to 40°C. The MSV-650 uses valve-regulated sealed lead-acid construction and absorbed glass mat AGM technology, with a gas recombination efficiency of up to 99%, and is maintenance-free. Its pure lead construction and proprietary element formulation make it suitable for high-capacity float standby power applications. The product is manufactured in accordance with IEC 60896-21/22:2004 and is UL1989 recognized (MH14533). Design life reaches up to 15 years under 25°C float service, and more than 12 years under the Eurobat (20°C) standard, placing it in the very long life category. In terms of storage, the MSV-650 has low self-discharge, with less than 10% self-discharge after 90 days at 25°C, and can be stored for up to 6 months at 25°C, requiring a full charge before use; if storage temperature is above 25°C, it should be charged sooner. These characteristics make it suitable for applications such as telecommunications that require long-term float standby.