Hi there.Can anybody suggest where I locate replacement batteries for a pre owned e bike I have recently purchased.Batteries are 3 x 12 volt 12ah. 150cm long 97cm wide 100cm high.. lead acid.Do not want to go lithium at the moment as quite frankly not sure if the e bike will actualy work so do not need the added expense. Push on terminals are both on the same side along the length unlike all batteries I have seen for sale on the net.Aware wiring can be changed for these batteries but as my next question suggests me and technical do not see eye to eye. I am unable to pull off the connectors which seem to have a sealing type application round them,not the rubber covers.Any suggestions for location and removal of spade connectors would be appreciated.Thanks in advance.