CSB GP12400 12V 40Ah Valve-Regulated Sealed Lead-Acid Battery
The CSB GP12400 is a general-purpose valve-regulated sealed lead-acid battery in the GP series, with a nominal voltage of 12V and a 20-hour rate capacity of 40Ah. Featuring AGM technology, it is suitable for float standby power applications such as security, emergency lighting, and medical equipment.
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Product Features
- Valve-regulated lead-acid (VRLA) design
- AGM (Absorbent Glass Mat) technology with up to 99% gas recombination efficiency, maintenance-free
- Pure lead plates with proprietary formulation elements
- Developed for float-charge standby power applications
- Manufactured in compliance with IEC 61056-1/2:2012 and UL1989 certified (MH14533)
Application Scenarios
- Backup power for security alarm panels
- Emergency lighting and exit sign fixtures
- Backup power for medical monitors and infusion pumps
- Access control and building intercom equipment
- Fire alarm linkage control panels
- Small electronic instruments and testing devices
Product parameters
- Model：GP12400
- Voltage：12 Vdc
- Nominal Capacity：40 Ah @ 20hr-rate
- Ah Capacity：43.6 (8-Hr 1.75 VPC @ 25°C)
- Ah Capacity：48.0 (20-Hr 1.75 VPC @ 25°C)
- Ah Capacity：43.0 (8-Hr 1.80 VPC @ 25°C)
- Max. Charge Current：12.0 A
- Max. Discharge Current：400 A
- Short Circuit Current：1012 A
- Internal Resistance：8.5 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：ABS (UL 94-HB) standard, flame-retardant (94-V0) available upon request
- Weight：12.92 / 28.48 kg / lb.
- Length (L)：197.0±2.0 / 7.76±0.08 mm / in
- Width (W)：165.0±2.0 / 6.50±0.08 mm / in
- Height (H)：170.4±2.0 / 6.71±0.08 mm / in
- Design Life：Up to 5 years in standby service at 25°C; Eurobat (20°C): 3-5 years, Standard Commercial
- 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
The CSB GP12400 belongs to the GP series of general-purpose valve-regulated sealed lead-acid batteries, with a construction of 6V and 12V top-terminal VRLA-AGM types. Nominal voltage 12 Vdc; nominal capacity 40 Ah (20-hour rate), tested at 25°C, 1.75 VPC. When discharged at the 8-hour rate, 1.75 VPC, capacity reaches 43.6 Ah; at the 20-hour rate, 1.75 VPC, it is 48.0 Ah; at the 8-hour rate, 1.80 VPC, it is 43.0 Ah. Maximum charge current 12.0 A, maximum discharge current 400 A, short-circuit current 1012 A, internal resistance 8.5 mΩ.
This model employs valve-regulated sealed lead-acid design and absorbed glass mat technology, with gas recombination efficiency of up to 99%, making maintenance unnecessary. Terminals are I2 threaded lead alloy, compatible with M6 bolts, with torque values supporting 51.7±10.3 Kgf∙cm, 44.9±9.0 Lbf∙in, or 5.10±1.0 N∙m. The case is ABS material (UL 94-HB), and a flame-retardant 94-V0 version is available upon request. Dimensions: length 197.0±2.0 mm, width 165.0±2.0 mm, height 170.4±2.0 mm, weight approximately 12.92 kg.
For charging parameters, at 25°C the float charge voltage is 13.5 to 13.8 Vdc/battery, and the equalize charge voltage is 14.4 to 15.0 Vdc/battery. Temperature conditions: nominal temperature 25°C, discharge allowed from -15°C to 50°C, and charge and storage allowed from -15°C to 40°C. Self-discharge performance: after 90 days at 25°C, remaining capacity is still above 90%, with a maximum storage of 6 months; fully charge before use, and if storage temperature exceeds 25°C, charge ahead of time.
This battery is designed for float standby power, with a design life of up to 5 years under 25°C standby conditions, and 3 to 5 years at 20°C per Eurobat standard. The product is manufactured in accordance with IEC 61056-1/2:2012 and is UL1989 recognized (MH14533). The GP series is officially positioned as a general-purpose VRLA battery series, widely used in security, emergency lighting, and medical equipment scenarios.
Overall, the GP12400 combines 12V voltage, 40Ah nominal capacity, and AGM maintenance-free construction, along with clear float and equalize voltage ranges, a wide operating temperature range, and standard terminal design, making it suitable as a general-purpose standby power source. Its pure lead construction and proprietary element formulation, as well as its manufacturing basis in compliance with IEC and UL standards, provide a reference technical foundation for float standby applications.
