as title says where can i buy a bike battery charger/trickle charger , is it the same as a car battery charger so maybe i can get check out some car shops ?? thanks

Go to Big Twin ot Power Station they have a small trickle charger you can leave on for extended periods. www.big-twin-thailand.com

Buy an Optimate III sp off the internet for 30 odd quid delivered to Thailand. Excellent product and more than just a charger recommended by a lot of the major manufacturers.

If you don't mind going into Bangkok, I just found a battery shop near my condo.

Between Charan Sanitwong 49 and 49/1 on the north side, (about 5 minutes from Central Pinklao), there is a shop that seems to sell every kind of battery imaginable and they sell an assortment of chargers as well. I just picked up a smart charger for 3000 baht, but I think they have cheaper models as well.