Some people think that you should not let the lithium-ion battery(lifepo4 batteries) fully depleted after the charge, the other people think that it does not matter. But in fact, modern lithium-ion battery will not be much affected, because their discharge process by the car-circuit tight control.
For nickel-cadmium batteries, this maybe a big problem, because they can discharge to the limit state, eventually leading to the battery can not even re-charge. Lead-acid batteries also have a similar situation, the discharge is too thorough will lead them into a "deep cycle" state.
3. Use the appropriate charger
I strongly believe that you should use the correct charger to charge the device. For travel convenience, you may be free to wear a charger and data cable to charge the device, such as take a portable solar power generator on the way.
But in the long run, you'd better use the most suitable charger for the device, because it can provide the most appropriate battery current. Frequent use of inappropriate chargers will eventually damage the battery life.
If you insist on using third-party chargers, you must make sure they come from a trusted brand. $ 500 worth of Tablet PC can be configured with cheap charger? I think it's best not to do this, because the built-in battery protection circuit in the device can turn off any power, which could damage the battery. While poor quality chargers can cause damage, resulting in voltage spikes and overheating.
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