<P> An effect with similar symptoms to the memory effect is the so - called voltage depression or lazy battery effect . This results from repeated overcharging ; the symptom is that the battery appears to be fully charged but discharges quickly after only a brief period of operation . In rare cases , much of the lost capacity can be recovered by a few deep - discharge cycles , a function often provided by automatic battery chargers . However , this process may reduce the shelf life of the battery . If treated well , a Ni -- Cd battery can last for 1,000 cycles or more before its capacity drops below half its original capacity . Many home chargers claim to be `` smart chargers '' which will shut down and not damage the battery , but this seems to be a common problem . </P>
<P> An effect with similar symptoms to the memory effect is the so - called voltage depression or lazy battery effect . This results from repeated overcharging ; the symptom is that the battery appears to be fully charged but discharges quickly after only a brief period of operation . In rare cases , much of the lost capacity can be recovered by a few deep - discharge cycles , a function often provided by automatic battery chargers . However , this process may reduce the shelf life of the battery . If treated well , a Ni -- Cd battery can last for 1,000 cycles or more before its capacity drops below half its original capacity . Many home chargers claim to be `` smart chargers '' which will shut down and not damage the battery , but this seems to be a common problem . </P>
what is the shelf life of a nicad battery
what is the shelf life of a nicad battery
1,000 cycles
1,000 cycles