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Old 08-09-2021, 04:38 PM   #1
hemiallen
Montana Fan
 
Join Date: Feb 2021
Location: Lodi
Posts: 221
M.O.C. #28242
First draw down-recharge Li, this look right?

3120 2021 Montana.

300Ah Battleborns, ran the fans, tv, etc and got them down to 68% as per my Victron smart shunt. Started the recharging using shore power through the PD4575 with Li charge setting. Batteries showed 13.22v static, power 27W, consumed 105.2Ah which matches the 68%. Max shown was 14.58V.

At recharge, charge voltage was 13.50 and ramped up to 13.61. I thought it should have been 14.4, like it showed when the initial setup was complete before draw down test. In 3 minutes it went up to 69% but was still 13.6v ( I tried to use the WIZARD button but it's disabled, I assume) and it was running 52.01A, and 618W ( not sure what that indicates). After a few jumps in percentage, which was about every 3 minutes, it still showed what I thought should have been 14.4v at 75A recharging, it still was 13.6v ~46-48A depending on where the recharging I logged down. After 3 hours I went back out and found the Shunt told me the batteries are 100% and lo and behold they are at 14.58V.


I of course called PD a few minutes after they closed for the day.

Anyone know why I didn't get full recharge voltage and Amps from the PD?

I also have I believe a transfer switch problem. My test was to be using my Honda 2000i generator, but it throws a red light for ground fault, and no recharging. I found it might be a grounding issue with the Genny, found how and ran a ground wire from the generator to the RV's battery bay ground screw for the leveling system bolted to the frame. Still has a ground fault.

Any help appreciated

Allen
__________________
Old rig: 2005 Ram QC 1500 5.7- Rockwood 8288 4- 6v batteries
New rig: 2016 Ram 25004x4 QC LB & 3120rl legacy-solarflex 300w and 400Ah Battleborn
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