Bests & Worsts Reviews from Amazon

light weight and fool proof. Some people complained it will not charge a totaly dead battery. This is safety feature so it will not turn on if nothing is hooked up it. To charge a dead battery - you have to give it a little pre charge to get it to about 1 volt so the charger knows something is actually hooked up to to it. To do this: 1. unplug charger from wall 2. hook battery to charger 3. press and hold "display" and "type" button at the same time 4. while holding those buttons - plug the charger into wall. * this will bypass safety features and charge the battery even if it is dead (assuming the battery can be charged at all) - do not run in this mode for more then 5 minutes or you can damage unit and battery. - this will get the battery enough of a charge so that the charger can detect a battery is hooked up to it (1 volt) . 5. unplug charger from wall. 6. wait 30 seconds and plug in charger into the wall. This will put it back into 'regular' mode and start charging your batter properly Good luck! Brad