Hi all, I'm a newcomer to this electric bike business but due to illness I'm looking to electrify my road bike so that I can carry on using it. I've chosen the motor I want (Bafang 250W, I only want assistance, not full "electric moped" capability) but I'm dithering about the battery choice. For aesthetics and to keep addons to a minimum I'd ideally like to use a water bottle shaped battery like Cytronex use to fit in the bottle cage, but as far as I understand their battery only works with their whole system (I know they've got a retrofit kit coming out soon but I was told it will cost around £1000, which seems excessive). Does anyone know of any other manufacturers that make this shape of battery? I'm hoping to find one that's either Li-ion or LiFePo4, 250W and around 12AH. Any tips would be very much appreciated!