Starting from your alarm clock, remote control, mobile phones, laptop, https://reconditioning-battery.weebly.com and vehicle. Now with the help of a syringe take the acid out of these holes but remember not to empty these holes with acid carefully see the holes with larger acid. Take some acid from these holes and Puch it in the holes of small acids so that they all should be half-filled with acids. This is important because if there will be no acid left in the battery then the battery will be immediately discharged and you have to recharge it again. When you are doing this procedure you have to hamn sure that this acid doesn't fell on your body or clothes because this could be harmful to you. Try to discharge the acid in the right place so that no human could be harmed from it.
Is it worth reconditioning a battery?