A quick search on how to improve battery life on your tablet or other device reveals many options. Screen brightness, system notifications and background processes all consume a great amount of resources. Although reducing screen brightness and disabling system notifications can improve battery life, often these tips fail to significantly extend a battery charge. One way to greatly improve battery life is to power off the device completely when not in use. In a trial period, a Samsung Galaxy III tablet that was constantly losing charge overnight improved dramatically when I began powering off the device after each use. Instead of charging once or twice a week, now the device charge can easily go two months or more!
To be fair, there are plenty of days I don't use the device and when I do, it is often just to do a quick search or get the weather forecast. A less drastic approach would be to try using airplane mode instead which disables WiFi. With little hint as to why the device was losing charge so rapidly, I opted to completely power down in my test. The result to say the least was impressive. I suspect the reason why the device was losing charge before so rapidly was because of excessive background activity probably due to automatic Chrome or Android O/S updates.
While this approach does work, it requires waiting 30 seconds to a minute for the device to power on and WiFi to come back up. I usually turn on the tablet and put the device aside while it boots. It should also be noted that for security purposes, it is best to leave the device on at some point so that critical security updates can be downloaded. Nonetheless, if you are tired of constantly charging, this method will probably work for you.
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