... unnecessary, -FM serie valve Maintenance Free Lead-Acid Battery Charge for autos.CAUTION : lead acid battery 1.Avoid short circuit, 2. Risk of ... a sealed container, 5.Keep the battery dry,ventilative,cool, 6.If any demage to battery,please change new one,7.Handle with ... the battery terminal, 8.Make regular examination and use it in the valid date, 9.Do not recharge(omitted if rechargeable) diassemble ...