Shimano STEPS battery charger. Can charge without removing battery via compatible mounts. Charger is compact and lightweight for those on the go. Fast charging time, up to 80 percent charge in 2 hours (full charge: 4.5 h). EU plug (requires EU to UK plug adapter to work in the UK sold separately). Compatible With BT-E6000 / E6010 /E8014 (11.6 Ah) / E6001 / E8010 / E8020 / E8035 / E8035L (14 Ah) / E8016 / E8036 (17.5 Ah) batteries.
Best Price: £49.99 from Merlin Cycles