CSB HR12120WFR 12V 30Ah Sealed Lead-Acid Battery, Flame-Retardant Case

What is the CSB HR12120WFR?

The CSB HR12120WFR is a 12 V, 30 Ah valve-regulated lead-acid (VRLA) battery with absorbent glass mat (AGM) construction from the CSB HR series (High Rate). It is sealed and maintenance-free: it never needs water.

CSB designs this series for high-rate UPS and float service standby power. This part number has a flame-retardant (UL 94-V0) case as standard.

What are the specifications of the CSB HR12120WFR?

Figures published by CSB in the HR12120W datasheet (2026 edition), with the CSB price list attributes marked:

Nominal voltage: 12 V
Nominal capacity (CSB price list): 30 Ah
Watts per cell, 15 minutes to 1.67 V/cell, 25 °C: 123 W
Maximum charge current: 12 A
Maximum discharge current: 225 A
Internal resistance: approx. 8.2 mΩ
Terminal: I1 threaded insert for M5 bolt
Container: flame-retardant ABS, UL 94-V0 (this part number)
Flame-retardant case: standard on this part number (CSB price list)
Weight, approx.: 20.48 lb (10.2 kg)
Dimensions (L x W x H): 166 x 125 x 175 mm (6.54 x 4.92 x 6.89 in)
Case / group size (CSB price list): M26
Design life: up to 5 years in standby service at 25 °C; Eurobat (20 °C) classification: 3-5 years, standard commercial
Discharge temperature range: -15 to 50 °C
Float charging voltage: 13.5 – 13.8 V per battery at 25 °C (77 °F)
Equalize / cycle charging voltage: 14.4 – 15.0 V per battery at 25 °C (77 °F)
Standards (CSB datasheet): IEC 61056-1/2:2012, UL1973 Listed (MH66728) and UL1989 Recognized (MH14533)

How much power does the CSB HR12120WFR deliver in a 15-minute discharge?

CSB’s constant-current table gives 67 A for 15 minutes to 1.67 V/cell at 25 °C, and the constant-power table gives 738 W per battery to the same end voltage. These are the figures to size a UPS or standby string against a 15-minute runtime.

How do I request a quote for the CSB HR12120WFR?

Request a quote by the part number HR12120WFR. 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.