10-09-12, 02:48 PM
Go to Maplin, or online, and buy their solar charging panel, marvellous bit of kit. Best way to keep a battery working is using the bike regularly though. If flat, bump it and ride. After 5 miles the battery should be hot to trot next time you need to start it, the longer the ride the better. The regulator allows it to charge faster if it needs it and then reduces the input to suit. My battery is 5 years old now and perfect cos I use the bike nearly every day. I have been through 4 batterys i the bird, through lack of use in that time.