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E-Bike Lithium Battery Services

EMP builds, rebuilds, repairs, tests, and upgrades lithium e-bike batteries for riders who need more range, better reliability, or a second life for their original battery pack.

Battery Rebuilds

We replace worn-out internal lithium cells while keeping your original battery case, connector, and mounting style when possible.

Custom Battery Builds

Need a custom pack for a special project? EMP can build lithium battery packs based on voltage, capacity, space, and power needs.

Diagnostics & Testing

We test voltage, capacity, cell condition, charge behavior, BMS function, and battery health before recommending service.

Capacity Upgrades

Many batteries can be upgraded with higher-capacity Grade-A cells to increase riding range and improve performance.

What We Service

E-bike lithium battery packs
36V, 48V, 52V, 60V, 72V battery systems
Downtube batteries
Rack batteries
Seat tube batteries
Folding bike batteries
Custom lithium battery packs
Chargers and charge port matching

Keep Your Original Battery Case

In many cases, replacing the entire battery is expensive or difficult to find. Our rebuild process allows you to keep the original case, lock, rail, connector, and fitment while replacing the worn internal cells with new lithium-ion cells.

This is ideal for older e-bike brands, discontinued batteries, and batteries that no longer hold charge or cut out under load.