Nexus 7 Charging: Should I Drain Battery?

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Draining the battery on a Nexus device before recharging is not advisable. Modern lithium batteries benefit from not being completely discharged, as doing so can negatively impact their lifespan. The optimal practice is to maintain the battery charge around 70% for maximum longevity, and storing it in a refrigerator can further enhance its lifespan. Each charge cycle diminishes the battery's overall capacity, so minimizing discharge and charge cycles is recommended. Using a properly designed charger can help maintain battery health, and the potential drawbacks of keeping the battery at 100% charge are generally negligible.
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Should I drain my battery on my Nexus before charging it again?
 
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No. With the newer batteries, it's bad for them to be completely drained before charging. If possible, avoid completely draining the battery.
 
Maximum life for lithium batteries is at 70% charge and in the refrigerator. The capacity decreases with every charge cycle so the more you discharge and charge it, the faster it will lose total capacity. With a properly designed charger it seems you would always be better off using the charger to reduce the discharge/charge cycles. The additional loss due to being at 100% charge is probably not an issue.
 

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