I just went out for a ride and half way changed from my default powertrek battery over to Annes synergie breeze battery via a kettle plug adapted lead. There`s no doubt about it, the synergie battery is powerful and I`m pleased that using just the supplied mains leads between the plugs worked fine with no overheating. Now i must get it charged and back onto the guvnas bike before she realises
Dave
Dave