I am looking for an Android tablet which can easily run multiple weeks or even months while being hooked up to a power source.I want to use the tablet for automatically taking screenshots of websites, taking from a queue which is being filled constantly.The (no-name) tablets I am using currently get really hot very fast and seem to slow down as a result, so the Android phone (Samsung S3 Neo) are taking three times as many screenshots per hour than the tablets.Requirementsa decent processor and RAMbattery life irrelevant, it will be poweredmust sustain working a long time without getting too hot
Android Tablet for long time usage
android;tablet
This does not answer your Question directly, but provides another approch:I would keep the current device and go with a solution wich cuts the 24/7 charge to some hours per day. This stops the overheating and you do not need to buy a new tablet.To do this I would buy a time switch, which is a device that switches a socket on and off based on the times you set on the device. This way you can keep all devices plugged in and the device disables the power source without further do.To have this work perfectly you have to find a time span which holds your charge at your desired level across all devices, as an example 3 hours loading, 3 hours on battery should keep your devices over critical battery levels. However if the power consume across all devices is to far part you should consider using a second time switch for this device/s.I would group the devices based on battery capacity and charging speed and aim to keep the battery level between 20-80%. Also note that the Li-Ion battery does not charge in a linear way and significantly charges slower from about 80% charge level.