Short story is I am down to 23 minutes per a cycle before one or two of my battery crash. I expect I'll have to get another new set of batteries for next season but was hoping to trouble shoot anything else it may be with the current set so I didn't have a new set sitting 6 months or so till it might be time to mow. Any ideas of things I can check/recheck or measure?
Earlier this year I replaced my pack, hooked the new one up to my minnkota 4 bank charger and the 4 individual battery voltage displays I have. I am local to a battery place to the Trojan 31XHS were only $150 a piece out the door and the other dealer has us batteries which would have fit fine except the back battery due to the post position.
I tried to break them in nicely doing very low draws the first 20 cycles or so which made mowing take forever and then progressively getting more aggressive till I'm doing 11 volts under load on the weakest battery which still shows half full or more on the built in meter.
I now have two weak batteries and am being a little more aggressive as I try to get mowing done. Battery 4 will usually be .2 volts lower when I start out than the rest unless I charge it additionally with a 12 volt NOCO charger I got. If I don't put extra charge on Battery 4 then Battery 2 will be the first to crash. And by crash I mean I'm mowing along at just over 11 volts on most with one of them at 10.8 or so when I sometimes miss a quick drop low into 10 then 9 within seconds. I shut down the blades and everything battery goes back to mid 11s and I head back and plug in the 4 bank charger. I look at the original meter on the mower and it showing half or more full. Last I tried I did 4 cycles over the weekend and the last one wasn't that much better than the first.
Is the only way to troubleshoot to get an ampmeter or perhaps figure out it my old emeter I had stashed could work? I have a killowatt meter somewhere I could hookup to try and track how much power is going in if that could help?
I've watered them when needed but really not all that much water has gone in. The blades are sharp and balanced, the tires have the recommended tire pressure, mower is clean from debris, the connections seem good and the wires aren't hot.
Last edited by Evblazer
on Tue Dec 01, 2015 5:30 am, edited 1 time in total.