HRL12540W CSB 12V 540W Valve-Regulated Sealed Lead-Acid Battery
For applications such as data center UPS requiring high-rate float backup, the CSB HRL12540W belongs to the HRL series and is a VRLA-AGM battery. It uses a 6V+12V top terminal configuration, with nominal 12Vdc: 15min-rate output 540W, 542W/cell at 15 minutes, and 838W/cell at 5 minutes.
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Product Features
- Battery type: Valve Regulated Lead Acid (VRLA)
- Uses AGM (Absorbent Glass Mat) technology, maintenance-free, with gas recombination efficiency up to 99%
- Pure lead-based construction with proprietary elements added
- Developed for two types of applications: high-rate UPS and float standby power
- UL1989 recognition (MH14533) has been obtained; product manufacturing follows IEC 60896-21/22:2004 standard
Application Scenarios
- Backup power for large data centers is provided by UPS
- Cloud computing centers use high-voltage direct current as backup power
- Uninterruptible power supplies are deployed in financial trading systems
- Emergency power for communications hubs is ensured by UPS
- Industrial automation uses UPS for high-power backup
- UPS is used for backup power of rail transit signals
Product parameters
- Model：HRL12540W
- Voltage：12 Vdc
- Nominal Capacity：540W @15min-rate
- Watts per Cell：838 (5-Min 1.67 VPC @ 25°)
- Watts per Cell：542 (15-Min 1.67 VPC @ 25°)
- Max. Charge Current：54 A
- Max. Discharge Current：800 A
- Short Circuit Current：3523 A
- Internal Resistance：2.60 mΩ
- Terminal Type：I2 thread lead alloy terminal to accept M6 bolt
- Terminal Torque：51.7±10.3 Kgf·cm / 44.9±9.0 Lbf·in / 5.10±1.0 N·m
- Container Material：PP (UL 94-HB) standard, flame-retardant (94-V0) available upon request
- Weight：43.90 / 96.76 kg / lb.
- Length (L)：343.0±2.5 / 13.50±0.10 mm / in
- Width (W)：170.0±2.0 / 6.69±0.08 mm / in
- Height (H)：275.7±2.5 / 10.85±0.10 mm / in
- Design Life：Up to 10 years in standby service at 25°C; Eurobat (20°C): >12 years, Very Long Life
- Float Charging Voltage：13.5 - 13.8 Vdc/battery
- Equalizing Charging Voltage：14.4 - 15.0 Vdc/battery
- Operating Temperature：discharge -15°C to 50°C; charge/storage -15°C to 40°C
Product details
HRL12540W is one of the HRL series products introduced by CSB. The series covers 6V + 12V Top Terminal VRLA-AGM types. This battery has a nominal voltage of 12 Vdc and a @15min-rate nominal capacity of 540W at 1.67 VPC @25°C. Measured at 25°C and 1.67 VPC, the power per cell is 838 W/cell at 5-Min and 542 W/cell at 15-Min. The HRL series is officially defined as a long-life, high-rate UPS pure lead battery series, mainly targeting high-power data centers and UPS loads. Its official application area is Datacenter UPS, i.e., data center uninterruptible power supply.
In terms of electrical parameters, the HRL12540W has a maximum charge current of 54 A, a maximum discharge current of 800 A, a short-circuit current of 3523 A, and an internal resistance of 2.60 mΩ. At 25°C, the float voltage should be maintained at 13.5 - 13.8 Vdc/battery, and the equalization voltage is 14.4 - 15.0 Vdc/battery. The nominal operating temperature is 25°C; the allowable discharge range is -15°C - 50°C, while charging and storage are both -15°C - 40°C. Regarding self-discharge, it is less than 10% after 90 days at 25°C, and it can be stored for up to 6 months. It must be fully charged before use; if storage temperature exceeds 25°C, supplementary charging should be performed correspondingly earlier.
From a structural perspective, this battery uses a valve-regulated sealed lead-acid (VRLA) design and is a maintenance-free absorbed glass mat (AGM) technology, with gas recombination efficiency up to 99%; internally, it has a pure lead construction with proprietary elements added. Its terminal specification is I2 thread lead alloy terminal to accept M6 bolt, and the terminal torque is 51.7±10.3 Kgf·cm, 44.9±9.0 Lbf·in, 5.10±1.0 N·m. The case uses PP (UL 94-HB) material, and a flame-retardant (94-V0) version can also be provided on request. Dimensions: length 343.0±2.5 mm, width 170.0±2.0 mm, height 275.7±2.5 mm; weight is 43.90 kg (96.76 lb.).
In terms of design life, in 25°C float standby service, the HRL12540W can reach 10 years; according to the Eurobat (20°C) standard, it is greater than 12 years and is classified as Very Long Life. This product is manufactured in accordance with IEC 60896-21/22:2004 and has obtained UL1989 Recognized (MH14533). Therefore, it can be used in scenarios such as data center uninterruptible power supplies that require both high-rate discharge and float standby; during installation and maintenance, the voltage, temperature, and torque requirements listed in the documentation should be followed.
