Yes, but you're still talking hundreds of charges to 100% for a Li-ion before you lose capacity. A regular charge to 90% and then only charging to 100% on the o

Yes, but you're still talking hundreds of charges to 100% for a Li-ion before you lose capacity. A regular charge to 90% and then only charging to 100% on the odd occasion you need the little bit extra gives you the best of both worlds. Do even a handful of deep discharges on a lead-acid battery and you'll kill it.