11. Battery Don'ts * Don't forget safety first. * Don't add new electrolyte (acid). * Don't use unregulated high output battery chargers to charge batteries. * Don't place your equipment and toys into storage without some type of device to keep the battery charged. * Don't disconnect battery cables while the engine is running (your battery acts as a filter). * Don't put off recharging batteries. * Don't add tap water as it may contain minerals that will contaminate the electrolyte. * Don't discharge a battery any deeper than you possibly have to. * Don't let a battery get hot to the touch and boil violently when charging. * Don't mix size and types of batteries. 11. Battery Don'ts * Don't forget safety first. * Don't add new electrolyte (acid). * Don't use unregulated high output battery chargers to charge batteries. * Don't place your equipment and toys into storage without some type of device to keep the battery charged. * Don't disconnect battery cables while the engine is running (your battery acts as a filter). * Don't put off recharging batteries. * Don't add tap water as it may contain minerals that will contaminate the electrolyte. * Don't discharge a battery any deeper than you possibly have to. * Don't let a battery get hot to the touch and boil violently when charging. * Don't mix size and types of batteries.