Q. this may not be possible on many days, but I will be using a samsung galaxy s 4g as a GPS device. It needs to run fairly continuous for 10 hours per day. I will only be riding on sunny days. I'm thinking of getting a 10-12 watt panel because any higher and its getting too big to fit properly on my bike. would this be enough or will I still be stopping to do ac charges a lot?
A. (Disclaimer, all these numbers involve a fair level of hand waving and vagueness)
The battery in a Galaxy S is about 5 Watt hours.
That is enough to run the GPS and screen constantly for about 3 hours with the screen at low brightness.
So you need a constant power output of about 1.6W to run things.
Since you'll be feeding into the 5V charger input there will be an efficiency hit so call it 2W.
So 10W would certainly be enough power if it can actually output 10W at 5V, in practice the power output is going to be a lot less most of the time. Probably in the 1-2W region.
In other words, it looks like it is close enough that it's hard to give a definite answer without testing it and actually measuring things.
My gut call is that it won't be enough power if you want to keep the screen on all the time, since you'll be outside you'll need to crank the brightness up close to max and that burns more power. If you are OK with the screen being off some of the time then it should be enough.
Why does the battery on a Samsung Galaxy S3 run out so fast?
Q. I left my 100% fully charged Samsung Galaxy S3 laying next to my bed as I went to sleep. When I woke up six hours later, it dropped from 100% to 68% -.-
The Ipod can be idle days before running out of batteries, maybe even a full week. Is there any way I can fix this problem? Any app that does that? Methods? Anything?
A. You can turn off your 3G, 4G, Wifi and any other wireless communications on the device. Obviously the cellular service can be left on because well, it is a phone. Also, you can install a Task Killer/Manager that will kill all the apps running in the background on your phone. I do that and my phone battery will last me forever. Just make sure the internet, etc. only comes on when absolutely needed. Oh, and one last thing, turn off the Auto-Sync on your phone, it connects to the internet and downloads information as well in the background,
Why is the power button on my phone not working?
Q. I have a Samsung Galaxy S II epic 4G touch and today the power button stopped working. Now the only way for the screen to wake up is if I connect the charger or take the battery out and put it back in. Any solutions to this problem? I really don't want to do a factory reset but if I do is there a way for me to connect my phone to my computer and back up some of the files like music, pictures, contacts, etc.
I got my phone at Christmas, it's 7 months old.
A. Corrosion seems to be a big problem with these fones. Yes you can back up the data to the sd card if its on the sd card already just remove it to be safe. And do reset. As for power button if its under warranty take.it to store Nd have them fix.it.. Or your out about 500 for.breaking seals.
Powered by Yahoo! Answers
Title : how much wattage should a solar panel be to keep a android phone charged using gps?
Description : Q. this may not be possible on many days, but I will be using a samsung galaxy s 4g as a GPS device. It needs to run fairly continuous for ...