A 3.7V nominal li-ion battery would peak at about 4.5V while charging. A bit hig...

Filligree 26 days ago | parent | context | favorite | on: EU law mandating universal chargers for devices co...

A 3.7V nominal li-ion battery would peak at about 4.5V while charging. A bit high, but a well designed circuit should be able to do that off 5V. Besides, 75% is far short of where the voltage starts to spike.