Swytch unveils first ‘pocket-sized’ e-bike battery 

E-bike conversion brand Swytch has unveiled what it calls the ‘world’s first pocket-sized e-bike battery’.  The London-based firm, which specialises in almost-universal battery kits for bikes, has developed a new power unit that’s similar in size to a smart-phone. Swytch’s new battery still provides 250w of power and nine miles …

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