MSJ-260 2V 260Ah Telecom Backup VRLA-AGM Battery

Product Features

Valve-regulated lead-acid (VRLA) design
Absorbent glass mat (AGM) technology, maintenance-free with up to 99% gas recombination efficiency
Pure lead construction with proprietary element formulation
Specifically engineered for high-capacity float standby power applications
Complies with IEC 60896-21/22:2004 and certified to UL1989 (MH14533)

Application Scenarios

Fiber access network central office backup
48V DC systems for telecom equipment rooms
Mobile communication core network backup power
DC power supply for microwave relay stations
Broadband access equipment backup
DC power backup for communication base stations

Product parameters

Model：MSJ-260
Voltage：2 Vdc
Nominal Capacity：260 Ah @10hr-rate
Ah Capacity：253.60 (8-Hr 1.75 VPC @ 25°C)
Ah Capacity：262.00 (20-Hr 1.75 VPC @ 25°C)
Ah Capacity：246.40 (8-Hr 1.80 VPC @ 25°C)
Max. Charge Current：78.00 A
Max. Discharge Current：1560 A
Short Circuit Current：4872 A
Internal Resistance：0.36 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：18.70 / 41.21 kg / lb.
Width (W)：131.0±1.5 / 5.16±0.06 mm / in
Height (H)：339.0±2.5 / 13.15±0.10 mm / in
Depth (D)：170.0±2.0 / 6.69±0.08 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

As a member of the MSJ series, the CSB MSJ-260 is a 2V valve-regulated sealed lead-acid battery that utilizes AGM technology, achieving a maximum gas recombination efficiency of 99%, and has a maintenance-free construction. This model has a nominal voltage of 2 Vdc and a nominal capacity of 260 Ah (1.80 VPC @25°C, 10-hour rate); at the 8-hour rate and 1.75 VPC, the capacity is 253.60 Ah; at the 20-hour rate and 1.75 VPC, the capacity is 262.00 Ah; at the 8-hour rate and 1.80 VPC, it is 246.40 Ah. In terms of electrical performance, the MSJ-260 can withstand a maximum charging current of 78.00 A, a maximum discharge current of 1560 A, a short-circuit current of 4872 A, and has an internal resistance of only 0.36 mΩ. The float voltage is set at 2.21 to 2.25 Vdc/battery (25°C), and the equalization voltage is 2.35 Vdc/battery (25°C). Self-discharge performance: after 90 days of storage at 25°C, the remaining capacity is still above 90%, and it can be stored for up to 6 months, but must be fully charged before use; if the storage temperature exceeds 25°C, charging is required earlier. This battery uses a pure lead construction and proprietary formulation, designed for high-capacity float backup power applications. It meets the IEC 60896-21/22:2004 standard and is UL1989 recognized (MH14533). The case is made of flame-retardant ABS (UL 94-V0), and the terminals are 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). Dimensions and weight data: MSJ-260 width 131.0±1.5 mm, height 339.0±2.5 mm, depth 170.0±2.0 mm, weight 18.70 kg (41.21 lb). Operating temperature range: nominal 25°C; -15°C to 50°C during discharge; -15°C to 40°C during charging and storage. The MSJ series is positioned as a VRLA 2V high-capacity long-life telecom battery series, with a design life of up to 20 years under float conditions at 25°C, and complies with the Eurobat long-life standard (greater than 12 years at 20°C). The MSJ-260 is suitable for backup power scenarios in the telecommunications field, providing float backup power support for base stations and other equipment.