Update.
I should have done this before. but found out some info on the website. It does not identify any brand of charger, it only describes it on the website as an 18A on board charger. seems slightly under powered compared to most chargers I know of...most are 20A right? The lower amps would explain it, if it was only meant for gel batteries. It also says it is equipped with a 275amp curtis programmable controller. Not sure about this one
