Rechargeable Batteries , Testers, and Chargers 
Altronix 12VDC 4.0 Amp Rechargeable Battery BT124

Features/Specifications:

Nominal Voltage: 12V

Nominal Capacity for 20hr rate: 4.0 (A.H)

Nominal Capacity for 10hr rate: 4.2

Life Cycles (charge/discharge): 400

Internal Resistance: 35 Ohms

Weight: 3.8 lbs

Dimension 3.5" (L) x 4.0" (W) x 2.75" (H) UL Listed