About the Bosch PowerTube 500 Vertical Battery

An electric bike battery is a rechargeable pack of lithium-ion cells with a management circuit, storing the energy that the motor draws on during assisted riding. Closest alternatives by price: Brompton Electric Replacement Battery 36V 8.55Ah (Original) ($1,143), Giant EnergyPak 500 Top Load Battery ($1,199) and Bosch PowerTube 500 Horizontal Battery (BBP3750) ($1,299).

Riders who want longer outings may add a second compatible pack, or move to a larger one, provided the bike and drive system support it. Compare nominal voltage and watt-hour capacity against the original, and ask the retailer whether a higher capacity version is supported by the bike’s controller.

Listed as suiting 11 vehicles in the catalogue, including Trek Allant+ 8 ST, Cube Touring Hybrid ONE and Cube Touring Hybrid ONE 400. Bosch has 7 products listed, from $119 to $1,599.