MSJ-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：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

The CSB MSJ-650 belongs to the MSJ series and is a 2V valve-regulated sealed lead-acid battery using AGM absorbed glass mat technology with gas recombination efficiency of up to 99%, officially positioned as a high-capacity, long-life telecom float standby power product. Its nominal capacity is 650Ah (1.80VPC, 25°C, 10-hour rate); at 25°C, the 8-hour rate 1.75VPC capacity is 658.40Ah, the 20-hour rate 1.75VPC capacity is 682.00Ah, and the 8-hour rate 1.80VPC capacity is 640.80Ah. In terms of electrical parameters, the MSJ-650 has a float charge voltage of 2.21 to 2.25Vdc (25°C), an equalizing charge voltage of 2.35Vdc (25°C), a maximum charge current of 195.00A, a maximum discharge current of 3900A, a short-circuit current of 13235A, and an internal resistance of 0.26mΩ. The battery uses pure lead construction with a proprietary element formula, is maintenance-free by design, is suitable for high-capacity float standby power scenarios, is manufactured in accordance with IEC 60896-21/22:2004, and is UL1989 recognized (MH14533). In terms of construction, the MSJ-650's case material is flame-retardant ABS (UL 94-V0), the terminal is an I4 threaded copper alloy terminal that accepts an M8 bolt, and the terminal torque is 126±25 Kgf·cm, 109±22 Lbf·in, or 12.3±2.5 N·m. The battery weighs 46.60kg (102.71 lb), with a width of 171.0±2.0mm (6.73±0.08 in), a height of 339.0±2.5mm (13.15±0.10 in), and a depth of 307.0±2.5mm (12.09±0.10 in). In terms of operating temperature, the nominal temperature is 25°C (77°F), the discharge temperature range is -15°C to 50°C (5°F to 122°F), and the charge and storage temperature range is -15°C to 40°C (5°F to 104°F). In terms of self-discharge, self-discharge is less than 10% after 90 days at 25°C, storage at 25°C is possible for up to 6 months, and a full charge is required before use; if the storage temperature is above 25°C, charge earlier. In terms of design life, the MSJ-650 has a design life of up to 20 years in 25°C float service, meeting the Eurobat (20°C) Very Long Life rating of greater than 12 years. This battery is aimed at float standby power applications in the telecom field, meeting continuous standby power supply needs with a high-capacity and long-life design.