TomSeller
Super Member
Batteries in parallel can lead to a number of strange problems -- It's highly unlikely it was designed to use any batteries in parallel.
Right. It is designed to work with four 6 V batteries in series to total 24 V. Wiring two 12 V in series and paralleling two more in series would "work" but is not ideal and should at least have separate fuses. In the OP's case, where he already bought the batteries, wiring two 12 V in series is proably the best unless his budget allows him to buy the four 6 V as designed.