The Power Experts

CSB Battery GP645

CSB Battery GP645 is a general purpose, maintenance-free sealed lead acid battery that offers up to 5 years in standby service. As with all CSB batteries, it is rechargeable, highly efficient, leak proof and maintenance free.  The GP645 offers Absorbent Glass Mat (AGM) technology for efficient gas recombination of up to 99%.


CSB Battery GP645 Specifications

Cells Per Unit 3
Voltage Per Unit 6 V
Capacity 4.5 Ah @ 20hr-rate to 1.75V per cell @ 77°F
Weight Approx. 1.85 lbs
Maximum Discharge current (A) 60A/90A (5 sec.)
Internal Resistance Approx. Approx. 18.5 mΩ
Operating Temperature Range Discharge: 5°F~122°F
Charge: 5°F~104°F
Storage: 5°F~104°F
Nominal Operating Temperature Range 77°F ± 5°F
Float charging voltage 6.75 to 6.9 VDC/unit Average at 77°F
Recommended Maximum Charging current limit 1.35A
Equalization and Cycle Service 7.2 to 7.5 VDC/unit Average at 77°F
Self Discharge More than 75% of the pre-storage capacity if stocked for 6 months or less at ambient temp. 77F
Terminal F1/F2-Faston Tab187/250
Container Material ABS(UL94-HB) & Flammability resistance of (UL94-V0) can be available upon request


For more in depth information, see the GP645 data sheet.

For more information about the CSB Battery GP Series,
call 800-876-9373 or email