Quote:
Originally Posted by GeorgeRa
I hope you will keep us posted about your lithium project. I am still planning to repeat good experience with Fullriver AGMs but your success could sway me towards lithium.
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I will be doing the updates to what is going on with the lithium. I am collecting the parts currently to do the final cleanup and updates to the first test run installation.
At this point, I can say that they were certainly not "drop in" batteries as they took quite a bit of effort to get balanced between the individual cells and also balanced between the three batteries for charge and discharge rates. Once I got those items straightened out the batteries performed better than expected on the one month shakedown test trip. The major surprise was how well they stayed in balance while charging to a voltage that doesn't generate an internal auto balance. They are "resting" now at about 50% charge for the off time coming up and the cells are all within .002v of each other. The test trip was done with solar disconnected and never on shore power so all alternator charging. We used 60-70ah per day on average and the longest without charging was 5 days with 6 nights which put us at the 50% down we are at now.
Mostly wiring cleanup, but am going to also separate the parallel batteries to be able to better control the two systems. Internal regulator will go back into the chassis alternator and a new Wakespeed regulator for standalone alternator for the coach. I will have to add spike protection in case of lithium battery shutdown, though, with them separated.