something to consider , the folks at voltphreaks have fantastic customer service. when i finally got my vph-900 back from the previous owner it was completely dead. v/p could have easily said its toast and try to sell me another battery. instead they walked me thru the process to get the initial charge into the battery what tender to use and if it wouldnt charge send it back and they would repair free of charge since it was less than 2 yrs since the battery was sold.( not to me they didnt care) cant beat that!