My pack is only 10ah 12s lifepo4 so if I am going for a longer or lazier ride than normal I pack my rc hobby charger and a 4s headway 10ah supply battery. I set it to the 17 or 18 lead acid cells (41/43v end target voltage) setting and let it dump 3ah into my 10ah 12s pack. As I know I have used 5ah already there is no need to be too worried about over charging my 12s pack as the 10ah 4s supply pack runs low after 3ah max has been sent over. These chargers will automatically halt the charge when the supply pack drops to 10.5v (user selectable cut off values can be set to a little higher or lower if desired).
I guess most set ups on ES would need two chargers adding expense and maybe two supply packs to avoid feedback unless you have a connection break halfway down the pack that can be easily undone. I charge at around 3.2amps for my lunch break and the 10ah draw from the headways supply pack doesnt seem to make them sag much at all.
Sometimes I pop the 12v supply pack in series with the main pack for a 5mph boost but it doesnt seem to get me any extra range even if I set it to medium the whole ride. So 12 cells set on level 3 speed (23mph) gets me the same range as 16cells at level 2 (23mph). The extra take off thrust must eat it up or the extra power makes me lazy lol
These are 40 pounds in the uk but any that say they charge 36v lead acid might be useful. Plus they offer 7amp charge rates which isnt bad if your supply pack can take it.
Hobby king list many starting from $37 (search 36v on hobbyking)
http://www.hobbyking.com/hobbyking/store/__15168__HobbyKing_ECO8_150W_7A_8S_Bal_Dis_Cyc_Charger_w_acc_USA_Warehouse_.html
http://www.overlander.co.uk/batteries-chargers/battery-chargers/overlander-rc-8s-pro-balance-charger.html
Id be interested to know if this could be charging while the bike runs at the same time. Iv blown too many rc chargers experimenting with things so this is one I wont try.
I guess most set ups on ES would need two chargers adding expense and maybe two supply packs to avoid feedback unless you have a connection break halfway down the pack that can be easily undone. I charge at around 3.2amps for my lunch break and the 10ah draw from the headways supply pack doesnt seem to make them sag much at all.
Sometimes I pop the 12v supply pack in series with the main pack for a 5mph boost but it doesnt seem to get me any extra range even if I set it to medium the whole ride. So 12 cells set on level 3 speed (23mph) gets me the same range as 16cells at level 2 (23mph). The extra take off thrust must eat it up or the extra power makes me lazy lol
These are 40 pounds in the uk but any that say they charge 36v lead acid might be useful. Plus they offer 7amp charge rates which isnt bad if your supply pack can take it.
Hobby king list many starting from $37 (search 36v on hobbyking)
http://www.hobbyking.com/hobbyking/store/__15168__HobbyKing_ECO8_150W_7A_8S_Bal_Dis_Cyc_Charger_w_acc_USA_Warehouse_.html
http://www.overlander.co.uk/batteries-chargers/battery-chargers/overlander-rc-8s-pro-balance-charger.html
Id be interested to know if this could be charging while the bike runs at the same time. Iv blown too many rc chargers experimenting with things so this is one I wont try.
The Concorde batteries are deep-cycle, engineered for solar power, coming in at $155.49 apiece. So its $466.47 for a 3S 36V configuration, yielding an additional ~42 amp-hours. I'm hoping to travel 50-60 miles on a single charge, the extra 90 lbs of battery in my cargo trailer. Thanks.
