Wednesday night I decided to take the EV out and try out the new cooling and program settings. The acceleration was GREAT and the controller stayed pretty cool. It was supposed to me a 12 mile round trip, but 4 miles in I can to a dirt road (under construction) and bottomed out the EV, cursed and went on. Then after reaching my destination I followed my dad home, asking to skip the dirt road. Well, he did avoid the dirt road and instead took the scenic routes to the mountains of our town! I ended up using almost ALL the battery power going up the hills, and came to a point where the controller went into low voltage shutdown and I was creeping along at less than 1 MPH.
I found that this what was my dad was referring too when the hills slowed him down. I did a battery check, and one was 50% and the rest were between 8% and 40% left! WAY out of balance!
I have used the single smart charger to bring up the lower batteries, and next I am going to set my K&W to do an equalizing charge on all the batteries. If this doesn't work, I am going to replace the entire pack with a new one, all under warranty. I also did try out the prototype BMS and it worked great after some minor software changes. Hopefully I will get a picture soon.
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