Yamaha Electric bicycle battery

Check the label. It shows a type number such as B94-20, B0S-21 or X1R-10, often together with PASB2, PASB5 or PASB6. PASB is the series name; the type number tells you the shape and the capacity. Yamaha made batteries for the rear rack, for the down tube and for inside the frame (intube). The PASB1, type number B89-00, sits in the seat tube.

With Er71 the motor no longer receives data from the battery. The display stays off or shows Er71 and the assistance cuts out. Does the battery still charge and do the lights come on? Then the problem is usually in the bike or the contacts, not in the battery. If the battery no longer responds to the button or will not charge, the electronics have most likely failed. On the Intube 500 Wh a new 504 Wh battery is then the answer; on most other types we repair or replace the electronics.

On Yamaha's down-tube batteries, the first and fourth lights flashing together is a fault that cannot be fixed. Then the only way forward is a new battery. If we cannot do anything for your battery, you pay nothing.

You see the price for each type on its product page. If you choose an inspection and then turn down our proposal, you pay €95 in inspection costs. A re-cell or electronics repair takes longer for Yamaha batteries than for most other brands. What to expect is on our lead time page.