VRLA-AGM 2V 650Ah CSB MSJ-650 Telecommunications Battery

Product Features

VRLA valve-regulated lead-acid battery
Maintenance-free; with AGM absorbent glass mat technology, gas recombination efficiency up to 99%
Made with pure lead construction and proprietary elements
Specially developed for high-capacity float-charge standby power applications
Manufactured in accordance with IEC 60896-21/22:2004 standard and also recognized to UL1989 (MH14533)

Application Scenarios

DC power backup for communication base stations
Central office backup for optical access networks
DC power supply for microwave relay stations
48V DC systems in telecom equipment rooms
Backup power for broadband access equipment
Backup for mobile communications core networks

Product parameters

Model：MSJ-650
Voltage：2 Vdc
Nominal Capacity：650 Ah @10hr-rate
Ah Capacity：658.40 (8-Hr 1.75 VPC @ 25°C)
Ah Capacity：682.00 (20-Hr 1.75 VPC @ 25°C)
Ah Capacity：640.80 (8-Hr 1.80 VPC @ 25°C)
Max. Charge Current：195.00 A
Max. Discharge Current：3900 A
Short Circuit Current：13235 A
Internal Resistance：0.26 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：46.60 / 102.71 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)：307.0±2.5 / 12.09±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

CSB MSJ-650, part of the MSJ series, is a 2V valve-regulated sealed lead-acid battery introduced by CSB. It uses an AGM absorbent glass mat separator, with gas recombination efficiency up to 99%, and the manufacturer positions it as a high-capacity, long-life model for telecommunications float standby power. Nominal capacity is 650Ah, with test conditions of 1.80VPC, 25°C, and the 10-hour rate. At 25°C, when discharged at the 8-hour rate and 1.75VPC, capacity is 658.40Ah; at the 20-hour rate and 1.75VPC, capacity is 682.00Ah; at the 8-hour rate and 1.80VPC, capacity is 640.80Ah. Electrically, at 25°C the float charge voltage range is 2.21 to 2.25Vdc, and the equalization charge voltage is 2.35Vdc. Maximum charge current is 195.00A, maximum discharge current is 3900A, short-circuit current is 13235A, and internal resistance is 0.26mΩ. The battery uses a pure lead construction and a proprietary element formulation, features a maintenance-free design, and is suitable for high-capacity float standby power applications. It is manufactured according to IEC 60896-21/22:2004 and is UL1989 recognized (MH14533). Construction: The case is made of flame-retardant ABS (UL 94-V0); the terminal is an I4 threaded copper alloy type and can accommodate an M8 bolt. Terminal torque is expressed in three ways: 126±25 Kgf·cm, 109±22 Lbf·in, or 12.3±2.5 N·m. The entire battery weighs 46.60kg (102.71 lb); width is 171.0±2.0mm (6.73±0.08 in), height is 339.0±2.5mm (13.15±0.10 in), and depth is 307.0±2.5mm (12.09±0.10 in). Temperature conditions: Nominal temperature is 25°C (77°F). Discharge is allowed from -15°C to 50°C (5°F to 122°F); charging and storage are allowed from -15°C to 40°C (5°F to 104°F). Self-discharge performance: stored at 25°C for 90 days, self-discharge is less than 10%; maximum storage at 25°C is 6 months, and it must be fully charged before use. If storage temperature exceeds 25°C, it needs to be charged in advance. Service life: When used in float charge at 25°C, the MSJ-650 has a design life of up to 20 years, meeting the greater than 12 years requirement of the Eurobat (20°C) Very Long Life classification. The product is used for float standby power in the telecommunications field; with its high-capacity and long-life design, it can meet the need for continuous backup power.