CSB EVX12520 12V 52Ah Sealed Lead-Acid Battery

What is the CSB EVX12520?

The CSB EVX12520 is a 12 V, 52 Ah valve-regulated lead-acid (VRLA) battery with absorbent glass mat (AGM) construction from the CSB EVX series (High Cycle). It is sealed and maintenance-free: it never needs water.

CSB designs this series for e-mobility and deep cycling.

What are the specifications of the CSB EVX12520?

Figures published by CSB in the EVX12520 datasheet (2026 edition), with the CSB price list attributes marked:

Nominal voltage: 12 V
Nominal capacity (CSB price list): 52 Ah
Rated capacity, 20-hour rate to 1.75 V/cell, 25 °C: 54.4 Ah
Rated capacity, 8-hour rate to 1.75 V/cell, 25 °C: 50.72 Ah
Maximum charge current: 15.6 A
Maximum discharge current: 500 A
Internal resistance: approx. 5.2 mΩ
Terminal: B4 terminal for M6 bolt
Container: polypropylene (PP), UL 94-HB
Weight, approx.: 39.39 lb (17.87 kg)
Dimensions (L x W x H): 228 x 138.4 x 219.3 mm (8.98 x 5.45 x 8.63 in)
Case / group size (CSB price list): G22NF
Design life: 400 cycles at 100% depth of discharge, 25 °C; 1800 cycles at 30% depth of discharge, 25 °C
Discharge temperature range: -15 to 50 °C
Equalize / cycle charging voltage: 14.4 – 15.0 V per battery at 25 °C (77 °F)
Standards (CSB datasheet): IEC 60254-1:2005 / IEC 60254-2:2008, UL1973 Listed (MH66728) and UL1989 Recognized (MH14533)

How do I request a quote for the CSB EVX12520?

Request a quote by the part number EVX12520. Tell us the quantity you need and, where CSB lists more than one terminal or case option, which one. We confirm price, availability and lead time with the quote.