prophey plus charger ??good or bad??

[weezek2]

i bought the prophet plus charger by dynamite on ebay and was wondering what peolpes thoughts are on this charger. i,ve already lost one brand new battery from it. i was also wondering if anyone knows how to properly use this thing. all attempts of trying to understand it using a volt meter are lost. it didn't come with directions, so any help would be appreciated.