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Bafang BBS02 / BBSHD / mid drive

Does the Hailong 52 V down-tube (Bafang) fit a Bafang BBS02 / BBSHD / mid drive bike?

Whether the Hailong 52 V down-tube (Bafang) fits a Bafang BBS02 / BBSHD / mid drive e-bike, and what to confirm on your own frame first.

FITS

Yes, with the right mount. The Hailong 52 V down-tube (Bafang) is the native pack for a Bafang BBS02 / BBSHD / mid drive bike (about 1040 Wh at 20 Ah, 52 V), charged through the XT60 discharge connector.

ConnectorXT60 discharge connector
Power panel
Voltage
52 V
Capacity
20 Ah
Energy
1040 Wh
Connector
XT60 discharge connector
Drive system
Bafang BBS02 / BBSHD / mid drive
The battery and the system
BatteryHailong 52 V down-tube (Bafang) (about 1040 Wh at 20 Ah, 52 V)
Native drive systemBafang BBS02 / BBSHD / mid drive
Verdictfits (native pack)
Charge portXT60 discharge connector
Will not fita different drive system, or a different Bosch/Shimano generation even if the shape matches

The Hailong 52 V down-tube (Bafang) is proprietary to the Bafang BBS02 / BBSHD / mid drive drive, so it fits that system and no other. A 52 V Hailong pack gives more top-end power and holds voltage higher through the ride, and a BBSHD tolerates 52 V. A 52 V pack peaks near 58.8 V charged, so confirm your controller and display are rated for it before fitting.

Confirm the mount and the XT60 discharge connector on your own frame, because packs that look identical across generations do not always interchange.

The battery to buy
Search Amazon for Hailong 52 V down-tube (Bafang) (52 V, up to 20 Ah, XT60)affiliate searchFind Hailong 52 V down-tube (Bafang) (52 V, up to 20 Ah, XT60) on eBayaffiliate
Battery, system and alternatives
Hailong 52 V down-tube (Bafang)52 V, up to 20 Ah, XT60Bafang BBS02 / BBSHD / mid driveBBS01, BBS02, BBSHD conversionReplacement battery for a Bafang BBS02 / BBSHD / mid drive bikeresolutionDoes the Hailong 48 V down-tube (Bafang) fit?resolution

Sources: Bafang 48V ebike battery with XT60 connector for BBS02B/BBSHD (Amazon) ยท GreenBikeKit, Bafang BBS01/BBS02/BBSHD power cable and connectors