If it is a lithium ion battery then yes it can stay plugged in all the time. But if it is a nickel metal hydride then it should be run down, charged fully and then unplugged.
Lithium batteries do not get a memory so they can be charged no matter what the state of charge is. Nickel batteries on the other hand can develop a memory; meaning if you always charge it when it is only partially discharged after a while it will only charge to the partially discharged state.
8 years, 5 months ago
by
JohnG
Traverse City, MI