The battery is always dead on Samsung Galaxy W?

Q. My girlfriend is having a problem with her Samsung Galaxy W. The battery is constantly dying. We even went to the point of buying a new, higher capacity battery for it but it's still dying within a few hours. In the course of three hours it will go from 100% battery down to 20%. Anybody have any ideas about what's going on and how to improve battery life?

A. In addition to what BethyMac said, the biggest battery killer for smartphones is the display. If you look at the battery status tool under Settings, you'll see the bar graph for the display is the lingers of all.

If she's indoors, she needs to keep the screen level lower. Most screens look fine at 50% or less indoors. Outdoors is different, since it's harder to see. There are widgets on the Play Store that you can install (for free, in many cases) that will allow her to toggle the brightness of the screen. Also, in Settings -> Display, she can adjust the brightness and turn on automatic brightness, which will allow the phone to adjust the screen based on the surrounding light.

She should also condition her battery from time to time. Lithium ion batteries have a chip in them that needs to be refreshed on occasion. Run the phone until the battery goes low enough so the phone shuts itself off. The attach the charger and let the phone charge for one hour after the charge indicator says it's full. You might want to have her do this two or three times initially, then once every two weeks after. That should help recondition the battery.

Q. I want to make a car charger, let just say I have a 3000 mah battery, and I connect to the car charger, will the charger convert it to 1000 mah?? And give out 5 volts??
I want to charger my Samsung galaxy with it, will it fry my phone?

A. I would guess that a car charging device, using USB, will
deliver about 100 ma.
When you say mah, the h stands for hour. No such thing
as converting to a smaller number (or larger).
Better leave well enough alone !! Use the proper charger.

Q. I just got the new Samsung Galaxy S2 phone and it's right out of the box and hasn't been turned on yet.
Should I charge it first before turning it on? Do I charge it to full?

How long should I charge it for the first time battery drain?
Thanks!

A. switch off and charge your battery overnight(7 to 8 hrs) before using your handset for the first time(recommended).

android handsets containg li ion battery discharge quickly when they are new so try to use your handset on battery as much as possible without being connected to charger. you will start getting a good battery lifetime after approximately 25 days ...(this happens in most of the case)