CSB MU1500S 2V 1500Ah VRLA-AGM Telecom Backup Battery

Product Features

Battery designed with Valve Regulated Lead Acid (VRLA) technology
With Absorbent Glass Mat (AGM) construction, gas recombination efficiency reaches 99%, requiring no routine maintenance
Utilizes pure lead construction and proprietary element formulation
Engineered for high-capacity float charge backup power applications
Manufactured to IEC 60896-21/22:2004 standards and UL1989 certified (MH14533)

Application Scenarios

Telecom base station scenarios requiring ultra-long backup duration
Large-capacity DC backup power systems for core network equipment rooms
DC power supply assurance for large telecom hubs
Energy storage backup solutions for remote island sites
DC emergency power supply for emergency command centers
Long-duration backup power for regional aggregation equipment rooms

Product parameters

Model：MU1500S
Voltage：2 Vdc
Nominal Capacity：1500 Ah @10hr-rate
Ah Capacity：1520.00 (8-Hr 1.75 VPC @ 25°C)
Ah Capacity：1560.00 (20-Hr 1.75 VPC @ 25°C)
Ah Capacity：1464.00 (8-Hr 1.80 VPC @ 25°C)
Max. Charge Current：450.00 A
Max. Discharge Current：9000 A
Internal Resistance：0.31 mΩ
Terminal Type：I3 thread copper alloy terminal to accept M10 bolt
Terminal Torque：249±50 Kgf·cm / 216±43 Lbf·in / 24.4±4.9 N·m
Container Material：Flame-retardant 聚丙烯 (UL 94-V0)
Weight：91.50 / 201.67 kg / lb.
Length (L)：437.0±3.0 / 17.20±0.12 mm / in
Width (W)：172.0±3.0 / 6.77±0.12 mm / in
Depth (D)：497.0±3.0 / 19.57±0.12 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 MU1500S is a 2V valve regulated sealed lead acid battery in the MU series, officially designated for telecom communications. This series is further developed from the MSV and MSJ, positioned as a 2V high-capacity, long-life telecom battery. Nominal voltage 2Vdc; at 25°C and 1.80VPC, the 10-hour rate nominal capacity is 1500Ah; the 8-hour rate capacity at 1.75VPC is 1520Ah; the 20-hour rate capacity at 1.75VPC is 1560Ah; the 8-hour rate capacity at 1.80VPC is 1464Ah. These specifications support the capacity requirements for long-duration backup power at telecom sites. The battery uses Absorbent Glass Mat AGM technology and a valve regulated sealed structure, with gas recombination efficiency up to 99%, maintenance-free design, suitable for high-capacity float backup power. The product is made with pure lead construction and a proprietary formula, with a flame-retardant polypropylene case meeting UL 94-V0 requirements, manufactured according to IEC 60896-21/22:2004, and recognized under UL1989, recognition number MH14533. Electrical and mechanical parameters: MU1500S maximum charge current 450A, maximum discharge current 9000A, internal resistance 0.31mΩ. The terminal is an I3 threaded copper alloy terminal, accepting an M10 bolt, with terminal torque 249±50Kgf·cm (i.e., 216±43Lbf·in or 24.4±4.9N·m). Dimensions are length 437.0±3.0mm, width 172.0±3.0mm, depth 497.0±3.0mm, weight 91.50kg (approx. 201.67lb). Charging and temperature conditions: float charge voltage 2.21 to 2.25Vdc at 25°C, equalize charge voltage 2.35Vdc. Nominal operating temperature 25°C, discharge range -15°C to 50°C, charge and storage range -15°C to 40°C. For self-discharge, less than 10% after 90 days at 25°C, with storage up to 6 months; fully charge before use, and if storage temperature is above 25°C, charge in advance. Design life: up to 20 years in float backup service at 25°C, greater than 12 years under Eurobat 20°C conditions, belonging to the very long life category. Overall, with its 2V high capacity, low internal resistance, long life, and maintenance-free AGM structure, the MU1500S is suitable for float backup power configurations in the telecom communications field.