Specs:

12 Volt 3.8AH
Length: 7.68"
Width: 1.85"
Height: 2.91"
Height over terminal: 2.99"
Weight: 3.50lbs
Terminal: F1 (.187) Fast-On

Cross Reference/Replaces:

Rocket ES4-12D
LC-R123R4P
GP1245
NP4-12
A512/3.5S / 07895315