So I had the Crown PM guy come out last week and check out my 20MT. I bought new batteries and switched over to a "Smart Charger" instead of the onboard charger. The PM guy said I bought the wrong batteries and that I am using the wrong charger. I'm not an idiot, but maybe I did miss something.. I bought 4ea 6v batteries with the same dimension as the batteries I took out. The slight difference is that the new batteries are 130ah and the old ones were 100ah.

As far as the onboard charger, I told the PM that the charger NEVER turns off. Thus will definitely kill the batteries over a period of time. So I tool a voltage test on the batteries before I plugged in the charger. I got 12.7v resting. I plugged in the charger and 10 minutes later tested the voltage and it was 13.7v. I left the charger plugged in overnight (12 hours) and when I came in this morning I did a test and got 16.37v (charger still plugged in). I unplugged the charger and let it sit for an hour and tested again getting 13.3v.

My smart charger goes through 7 stages of charge and I believe that it is better than roasting the batteries at 16.37v without shutting off. <-- What am I missing?

Furthermore, I told the PM guy that I do not get anything from the "Rabbit" speed switch. He did some basic voltage tests and stated that "I am only getting 12v through the switch and I should be getting 24v". Lol, I know better.. The motor runs on 12v in turtle speed and when the switch is activated to rabbit speed there is 24v applied to the motor (ONLY TO THE MOTOR). 24v does not travel through the control handle.

So my question is about the onboard charger mainly. Should I stick with it or use my smart charger? The rabbit speed and such is a whole other topic and the lift works fine for what I need. Rabbit speed would just be a luxury at this point.

Thanks in advance.