Custom lithium battery builds
Lightweight custom packs for boats, RVs, solar, audio & more.
GridFlex builds lithium batteries to match your setup — trolling motors, kayaks, RVs, off-grid cabins, car audio, and more. You tell us the voltage and amp-hours, we design the pack.
12V / 24V / 36V / 48V+
High-output BMS options
Built to your specs
Ships from Michigan
Get a custom quote
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Tell us your voltage, Ah target, and use case, and we’ll spec the battery.
High Output BMS
100A, 200A and higher continuous discharge options.
Lightweight
Far lighter than lead-acid with more usable energy.
Built to Order
Packs tuned to your boat, RV, solar or audio system.
