I recently purchased a Carrera Subway E bike from Halfords and am trying to purchase a 2nd charger - ideally one that connects directly to the battery rather than a charging dock. I contacted Halfords about this and they cannot help (!). There’s a myriad of generic chargers out there but none seem to be compatible. The bike was supplied with a charging dock but there is a 3 pin charging socket on the side of the battery. Can anybody advise? Thanks