I Have an Android 4.1.1 Sensis N78 RK30-anpei7008Trsy-user-r4.1.1.4.083 tablet with kernel version 3.0.8+ and build number RK30-anpei7008Trsy-user-r4.0.83.20130106 that I got almost a year ago. Till the weather got colder the tablet worked fine, however, as of the last 2 months it has acted strange.
First, even when fully charged, the tablet (with Wi-Fi on) will work for only 5 minutes or so before shutting down with-out warning. Then after I restart it I notice that the battery level dropped from 20 to 70 percent. Then the tablet will would work for a couple of more minutes before shutting down again (or after touching the screen). After powering it up for one more try I either get a “Connect your charger” message before it shuts down again. Or it won’t even get to the unlock screen before shutting down.
If I at this point I try to recharge I can get various results.
1) The battery level is shown at 1% or as high as 70%.
2) If I wait a day or so then try to recharge the battery level is show as 80% to 90%.
In either case, after being recharged, the same scenario that I listed above repeats.
The only other warning I get is that the screen seems to slowly flicker.
BTW: I have the sleep mode set at 30 minutes
The only solution, to get a decent run time (19 to 30 minutes) is that the tablet is kept in a warm place for an hour or so.
So, what is going on? Is this a temporary problem that will be “fixed” when the weather gets warmer?
Or has the battery (or any other component) been damaged by the cold?
UPDATE:
Things seems to have gotten worse. Now the tablet turns off (with a reported 68% battery charge) after 2 minutes or until I touch the screen to use it Plus the % of battey life keeps changing. For example, Last night I pluged in the tablet to be charged at a reported 20% battery life. After leaving the room for 5 minutes I came back to a turned off tablet. When I restarted it the charge level was reported at 69%.
Any ideas would be helpful.
First, even when fully charged, the tablet (with Wi-Fi on) will work for only 5 minutes or so before shutting down with-out warning. Then after I restart it I notice that the battery level dropped from 20 to 70 percent. Then the tablet will would work for a couple of more minutes before shutting down again (or after touching the screen). After powering it up for one more try I either get a “Connect your charger” message before it shuts down again. Or it won’t even get to the unlock screen before shutting down.
If I at this point I try to recharge I can get various results.
1) The battery level is shown at 1% or as high as 70%.
2) If I wait a day or so then try to recharge the battery level is show as 80% to 90%.
In either case, after being recharged, the same scenario that I listed above repeats.
The only other warning I get is that the screen seems to slowly flicker.
BTW: I have the sleep mode set at 30 minutes
The only solution, to get a decent run time (19 to 30 minutes) is that the tablet is kept in a warm place for an hour or so.
So, what is going on? Is this a temporary problem that will be “fixed” when the weather gets warmer?
Or has the battery (or any other component) been damaged by the cold?
UPDATE:
Things seems to have gotten worse. Now the tablet turns off (with a reported 68% battery charge) after 2 minutes or until I touch the screen to use it Plus the % of battey life keeps changing. For example, Last night I pluged in the tablet to be charged at a reported 20% battery life. After leaving the room for 5 minutes I came back to a turned off tablet. When I restarted it the charge level was reported at 69%.
Any ideas would be helpful.