subject: NI-MH battery and Li-ion battery [print this page] Charge and discharge: Over charge and over discharge can take irreversible hurt to both the Li-ion battery and Ni-MH battery. Both of these tow batteries are with quite little memory effects which almost can be ignored. So you needn't to do deep charge and discharge for these type of batteries frequently, please avoid over charge and over discharge, for laptop, an over discharged battery maybe make the laptop can't start though you have change the battery to a good one.
