Li-ion battery degradation is minimal, or even negligible when they aren't cycled across different capacity ranges AFAIK. What that means is that current chargi

Li-ion battery degradation is minimal, or even negligible when they aren't cycled across different capacity ranges AFAIK. What that means is that current charging the battery while it is getting discharged at a similar rate (which usually means a constant battert voltage) doesn't induce wear in the same way as charging the battery from a capacity of 10% to 100% (or even from 75% to 80%) does. But that could be different when that constant charge/discharge is happening at high capacity levels, lithium-ion batteries are weirder when they are at their maximim voltage. My knowledge is rusty at this point so let me know if I got any of this wrong.