Van Battery Add – Stay Off-Grid Longer

Power matters when you’re living or traveling in a van. Whether you’re running A/C in the summer, charging devices, or keeping your fridge cold on long boondocking trips, battery capacity can make or break your adventure. That’s why one of our most popular upfits at ABC Upfitters is the ability to double your battery capacity—giving you more power, more freedom, and less stress.

If you’re currently running a 400Ah Mastervolt lithium battery, you have two upgrade paths:

• Add an additional 400Ah battery for a total of 800Ah
• Or replace your 400Ah with two 460Ah batteries for a massive 920Ah of reliable Mastervolt power

If you already have a 460Ah Mastervolt battery, you can double your capacity by adding another 460Ah—again bringing you to 920Ah total.

This upgrade is ideal for full-time vanlifers, remote workers, off-grid enthusiasts, and anyone who wants to extend their time away from shore power. With double the battery storage, you can stay off-grid longer, power more devices, and feel confident knowing you’ve got the juice to back up your lifestyle.

At ABC Upfitters, we make battery upgrades seamless. Our experienced team handles every detail—from system compatibility and cable routing to clean installs and safety checks. We work with your van’s current setup to design a solution that maximizes your space, weight, and performance needs.

If you’re looking for a serious power boost, doubling your battery capacity is one of the smartest investments you can make in your rig.