i have one and its a great charger, never had a issue with it. it has three charge modes, temp charge, (battery matchers now are stating at the best temp is around 135-150 depending on which one you listen to. so you can temp charge to that temp. you can also peak charge and for ni-cd, you can pluse charge, you can also set max milli amp input, which i have been toying with and its working great so far, i.e. set it for 2000 ma, charge at 6 amps, the charger will stop charging at 2000ma input and then i reset it for 4000, crank up the amps to 7 and set the temp for 150. not sure how this effects battery life but my batteries have more punch then ever.