Replacement Yamaha 500Wh e-bike frame battery. Specification 36V 13.Ah 500Wh. Type: PASB6. Model: B0S-21. Lion Battery. 10INR19/66-4. Compatible With: Yamaha PW and PW-X drive systems.
Best Price: £372.50 from Merlin Cycles
Yamaha 500Wh Frame Battery – Black / 500 Wh Reviews