Specs:

6 Volt 36.0AH
Length: 6.25" (159mm)
Width: 3.35" (85mm)
Height: 6.50" (165mm)
Height over terminal: 6.93" (176mm)
Weight: 13.00lbs 
Terminal: NB

Cross Reference/Replaces:

1010
12568
12728
241006
2604
26132
2618
512E4
6V36AH
8600007
8600008
BP636
CE15AG
DG636
GNBSP6V36F2
GNBSP6V36NB
PCR636
POWPS6360F2
PRC636
RB6360
S636
SC6G26
SLA0139
SLA0994
SLAA636F2
SLAA636NB
UB6420
WKA642F2