LFP (lithium iron phosphate) batteries tolerate frequent charging to 100% better than NMC (nickel manganese cobalt) chemistry, which is why automakers using LFP packs often recommend daily 100% charging while NMC-pack vehicles typically recommend an 80-90% daily limit.
Practical takeaway
Check your specific device’s manufacturer guidance on daily charge limits — chemistry differences are exactly why the 80% rule doesn’t apply uniformly across every battery-powered device.