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Bosch eBike System 2 (BES2)

Which replacement battery fits a Cannondale Tesoro Neo (eBike System 2)?

The replacement battery that fits a Cannondale Tesoro Neo (eBike System 2), the charger it uses, and what not to buy.

FITS

Fits with the Bosch PowerTube 400 (eBike System 2). A Cannondale Tesoro Neo (eBike System 2) runs the Bosch eBike System 2 (BES2), so the replacement battery is the Bosch PowerTube 400 (eBike System 2) (400 Wh, 36 V, BES2).

ConnectorBosch smart-system round charge port
Power panel
Voltage
36 V
Energy
400 Wh
Connector
Bosch smart-system round charge port
Drive system
Bosch eBike System 2 (BES2)
This bike's fitment
BikeCannondale Tesoro Neo (eBike System 2)
Drive systemBosch eBike System 2 (BES2)
Battery that fitsBosch PowerTube 400 (eBike System 2) (400 Wh, 36 V, BES2)
Charge portBosch smart-system round charge port
ChargerBosch Standard Charger 4A (eBike System 2)

The Cannondale Tesoro Neo uses the Bosch eBike System 2 with a BES2 PowerTube, commonly the 400 or 500.

The BES2 400 and 500 in-tube packs share the frame slot, but the larger 625 needs a frame built for it.

The battery to buy
Search Amazon for Bosch PowerTube 400 (eBike System 2) (400 Wh, 36 V, BES2)affiliate searchFind Bosch PowerTube 400 (eBike System 2) (400 Wh, 36 V, BES2) on eBayaffiliate
Battery, system and charger
Bosch PowerTube 400 (eBike System 2)400 Wh, 36 V, BES2Bosch eBike System 2 (BES2)BES2, roughly 2014 to 2021All replacement packs for Bosch eBike System 2 (BES2)resolutionCharger for this bikeresolutionBattery for a Trek Verve+ 2 (eBike System 2)same system

Sources: Urban Arrow Service Center, Differences between Bosch eBike System 2 (BES2) and Smart System (BES3) · Propel Electric Bikes, Bosch PowerPack battery · Propel Electric Bikes, Bosch Standard Charger 4A eBike System 2 · Bosch eBike Systems, PowerTube and CompactTube batteries