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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 1 Reviews
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Tom (Florida) | February 4th, 2026
I recently purchased two XTR4D-250 batteries for my sailboat, and I couldn't be happier. Shipping was incredibly fast, and they arrived well-packaged and ready to go. They fit perfectly in my existing battery bank space, making the installation a breeze.
The best part is the performance—they are performing flawlessly and provided a noticeable capacity upgrade over my previous Group 4D batteries. It’s great to have that extra peace of mind and power while out on the water. If you’re looking for a rugged, high-performance AGM upgrade, these VMAX tanks are the way to go!