Product Description
The VMAXTANKS XTR31-135 is a sealed AGM Group 31 12-volt battery designed to provide both high-surge starting current and deep-cycle capacity. Model XTR31-135 delivers 1,150 CCA and 1,500 MCA alongside a 135Ah (20-hour) capacity and a 265-minute reserve rating.
This battery uses a dual-terminal setup (SAE automotive posts plus 5/16" stainless steel studs) for flexible connections and is described for marine, RV, trolling motor, and low-speed golf cart or EV use. The sealed, maintenance-free AGM design and heavy construction are noted features of the XTR31-135.
Product Specifications
BrandVMAXTANKS
ManufacturerVMAXTANKS
Manufacturer Part NumberXTR31-135
Item Weight78 pounds
Voltage12 volts
Capacity135Ah (20-hour rate)
Reserve Capacity265 minutes
Cold Cranking Amps (CCA)1150 CCA
Marine Cranking Amps (MCA)1500 MCA
Group SizeGroup 31
Battery TypeAGM Sealed (Lead-Acid)
TerminalsSAE automotive posts + 5/16" stainless steel studs
Item Weight78 pounds
Dimensions (D x W x H)6.77" x 12.9" x 8.66"
Manufacturer Part NumberXTR31-135
Number of Cells6
Estimated Cycle LifeUp to 1,000 cycles at 50% discharge (as described)