Click image for larger version. 

Name:	Battery-Charge.jpg 
Views:	6 
Size:	124.5 KB 
ID:	148883

Hello Friends, We can recharge an old/wasted 12v dry battery by refilling with distill water. I have done this many time with great back up also. Here is an example with proof of

Recharging a 12v Battery with Live Back Up Test.