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Ships Fast: Most orders placed before 2 PM EST ship the same day.
Freight Orders: Large orders ship next business day and include FREE lift gate service. Most deliveries arrive in 2-5 business days (remote areas may take longer).
Delivery Time: Most customers receive their order in 2-5 business days.
Technical Data
12V AGM Performance Charts
12V GEL Performance Charts
6V AGM Performance Charts
LIFEPO4 Performance Charts
Number Of Cycles vs Depth Of Discharge Graph
State of Charge Chart
Float Charge Voltage vs Temperature
Application & Use Guides
DC Winches Application Guide
Estimated Wire Sizing Chart
Trolling Motors Breakers and Cables Chart
Est. Run Time Calculators
AC and DC Loads
DC Motors (HP)
Sump Pumps
Trolling Motors
Water Pumps
5/5 Stars out of 3 Reviews
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New Dancer (United States) | February 10th, 2026
I chose the Vmaxtanks 12 V 85 ah AGM Battery for my sprinter RV house battery. The other battery would stop being functional after 2 yrs and was only 75 ah. After a lot of research this battery fit into the allotted space and it had a wheelchair use rating of 5-8 yrs. My experience with it on a couple of trip has been that I have only used 1/3 of the capacity after running LED house lights, stereo equipment, a DVD player for 2 movies, a furnace fan all night and a TV using a 12 V to 120 V inverter. So far I am satisfied with its performance.
Jaymichael P. (United States on March 8, 2014) | February 10th, 2026
Purchased for aux power for my cargo trailer. Holds a charge well. Comes 80% charged. The terminals are smaller than auto terminals (maybe standard for deep cycle, not an expert) Screw on terminals.
Peanut (United States on September 12, 2013) | February 10th, 2026
Installed two of these batteries in my motor home and they work great. After watching Tv for 4 hours, running two fans ( 1 fan all night), light and had the furnace on, I still had 80% left in the battery when I woke up and they charge fast too.