Up with a new DIY.charging the batteries would be easier now.that to at your home.The problem with battery recharge shops is that their time is not flexible as its advised to charge batteries for 8 hours.
For the below setup you will need:
1.An UPS(home or pc UPS)
Note:for best results flush the water in the battery and add new distilled water which can be found at the petrol bunk or automobile shops
1.first open up the UPS.
2.screws could be found at the bottom.
3.After opening remove the battery terminal.If you like you can leave the battery or else you can remove it.
4.connect the terminals with the dead battery thru a cable.
5.**keep the caps of the water shells open while charging**
6.power on the UPS and DONT PRESS THE POWER SWITCH OF THE UPS
.pressing the power switch will direct the AC current to the power ports and the battery will stop charging please keep it in standby position.
Charging for 8 hrs is preferred even though,my almost dead battery was charged at 6 hrs. Have been tested only with 5L-B battery.I think you can use all automobile batteries.I don't have any idea about cars
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