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Hello fellow Android enthusasts,

I recently bought a Nexus7 that I want to use for development. The thing is, every time I connect it to my USB, in order to test some apps on it, it starts charging. Now, i know that this is absolutely normal for every device, but I am also concerned that the constant charge/discharge cycles can shorten the life of the battery. What do I do?

Do I need to get concerned at all? I mean, if it reduces battery life with something like 1% per year, I am totally fine with it. Yet, if it is a significant drain, how can I prevent it from charging unless I am charging from a charger?

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1 Answer 1

Charge/discharge cycles are mostly irrelevant for li-ion batteries. The main source of capacity loss is simply time. A li-ion battery sitting unused in storage will lose 15-20% of its capacity per year (see charts on page 4). Any minor losses from cycling is going to get drowned out by that.

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