12V 52Ah Valve-Regulated Sealed Lead-Acid Battery — CSB EVX12520
As a member of the EVX series, the CSB EVX12520 is defined as a 12V valve-regulated sealed lead-acid battery; AGM technology and pure lead are used in its construction, with a nominal capacity of 52Ah (20hr). It covers both electric mobility and deep cycle applications, and is approved to UL1989 and IEC 60254.
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Product Features
- Battery is of the valve-regulated lead-acid (VRLA) type
- With absorbed glass mat (AGM) technology, it is maintenance-free and offers gas recombination efficiency of up to 99%
- Uses a pure lead construction and contains proprietary elements
- Designed for electric mobility or deep-cycle applications
- Manufactured in compliance with IEC 60254-1:2005 / IEC60254-2:2008 and recognized under UL1989 (MH14533)
Application Scenarios
- Power batteries for electric wheelchairs and mobility scooters
- Power supply for electric scooters
- Power batteries for electric power-assisted bicycles
- Auxiliary power for motorhomes and recreational vehicles
- Batteries for golf carts and park sightseeing vehicles
- Power supply for short-distance, low-speed electric mobility vehicles
Product parameters
- Model：EVX12520
- Voltage：12 Vdc
- Nominal Capacity：52 Ah @20hr-rate
- Ah Capacity：50.72 (8-Hr 1.75 VPC @ 25°C)
- Ah Capacity：54.4 (20-Hr 1.75 VPC @ 25°C)
- Ah Capacity：49.76 (8-Hr 1.80 VPC @ 25°C)
- Max. Charge Current：15.60 A
- Max. Discharge Current：500 A
- Short Circuit Current：1391 A
- Internal Resistance：5.2 mΩ
- Terminal Type：B4 thread terminal to accept M6 bolt
- Terminal Torque：51.7±10.3 Kgf·cm / 44.9±9.0 Lbf·in / 5.1±1.0 N·m
- Container Material：PP (UL 94-HB)
- Weight：17.87 / 39.39 kg / lb.
- Length (L)：228.0±2.5 / 8.98±0.10 mm / in
- Width (W)：138.4±1.5 / 5.45±0.06 mm / in
- Height (H)：219.3±2.5 / 8.63±0.10 mm / in
- Design Life：400 cycles at 100% DOD (25°C); 1800 cycles at 30% DOD (25°C)
- 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 EVX12520 is a member of the EVX series. It adopts a 12V valve-regulated sealed lead-acid (VRLA) construction and is a maintenance-free design. It uses AGM—which stands for Absorbent Glass Mat—technology to achieve up to 99% gas recombination efficiency, while combining a pure lead construction with a proprietary element formula. This model is mainly aimed at electric mobility and deep cycle applications; the manufacturer positions it as a durable deep cycle VRLA pure lead battery series.
The EVX12520 has a maximum charging current of 15.60A, maximum discharge current of 500A, short-circuit current of 1391A, and internal resistance of 5.2 mΩ; at 25°C, the equalization voltage is 14.4 to 15.0 Vdc/battery, while no float voltage data is available. In terms of capacity data, the nominal capacity at 25°C and 1.75 VPC is 52Ah (20hr-rate); in addition, at the 8-hour rate and 1.75 VPC it is 50.72Ah, at the 20-hour rate and 1.75 VPC it is 54.4Ah, and at the 8-hour rate and 1.80 VPC it is 49.76Ah.
The terminal is B4 type and accepts M6 bolts; tightening torque is 51.7±10.3 Kgf·cm, 44.9±9.0 Lbf·in, or 5.1±1.0 N·m. The complete battery measures 228.0±2.5mm long, 138.4±1.5mm wide, and 219.3±2.5mm high, and weighs 17.87kg; the housing is made of PP material and has a UL 94-HB flammability rating.
In terms of temperature adaptability and cycle life: the nominal operating temperature is 25°C; discharge is permitted from -15°C to 50°C; charging and storage require -15°C to 40°C. At 25°C, cycle life is 400 cycles at 100%DOD and 1800 cycles at 30%DOD. For self-discharge, after resting at 25°C for 90 days, capacity loss is less than 10%, and it can be stored for up to 6 months; it must be fully charged before use, and if storage temperature exceeds 25°C, it should be charged earlier.
This product is manufactured in accordance with IEC 60254-1:2005 and IEC 60254-2:2008, and has obtained UL1989 recognition (MH14533). Based on the above characteristics, the EVX12520 is suitable for electric mobility and deep cycle energy applications, providing stable 12V power under repeated charge and discharge conditions.
