It concerns the placing of Lifepo4 and Lipo lithium batteries. It doesn't work and here's why ...
izentrop wrote:If you put a 275 Ah pack in parallel to your existing 150 Ah pack, you will quickly destroy your lower capacity pack.
Exact, never mix different batteries! Whether in parallel or in series!
I tried on one of my electro road prototypes from Lipo 12 Ah with LifePo4 10 Ah in parallel... capacities quite close so I was confident but in fact not!
LifePo4 simply didn't discharge at all or almost not, 99% of the current was drawn on the Lipo!
I do not know the exact physical reason but it must certainly be related to their discharge capacity, 30C for lipos, 3C for Lifepo4 ...
It is as if the section of the "electron valve" of the lipo is 10 times larger and the lipo electrons push the lifepo4 electrons into the lifepo4 battery.