Tip & How-To about Smartphones Technologies Android Apps

Battery life on android smart phones

The new android phones require a 2 amp charge to fully charge the phone. some after market usb chargers only are rated for 1.5 amps causing the battery to indicate full the drop dramatically after only one call or a few seconds of use

Posted by on

Android Apps Logo

Related Topics:

Related Questions:

1 Answer

I need a phone charger for a Samsung galaxy note 3 can you tell me what will work for my phone! I had one of your brand before! Thank you!


Any micro usb charger , rated at 2.0 amps. You can use a 1 amp charger but will be slow. All usb devices are 5 volt, don't worry about volts, just amps. Note 3 = 2 amp charger

Sep 04, 2015 | Samsung Cell Phones

1 Answer

how do I get my tablet to turn on


It sounds like it may not be fully charging.

If the port on the tablet is loose/damaged or the cable/charger is failing, then the tablet may not be charging even though its plugged in.

If you can, try a different cable.

Make sure the charger is the correct one for the tablet! Some tablets require more electrical current then a computer's USB port provides. Same thing applies if you are using a 'phone' charger with the tablet, might not be enough current.

Most USB ports/chargers output about 5 volts DC (direct current), but they can vary in the amount of Amps (A) or mili-Amps (mA) they produce.

FYI - the symbol used to represent Direct Current is straight horizontal line with a dashed horizontal line directly under it.

Most computer USB ports only produce 500mA.

Most phone chargers only produce 1A.

Many tablets require 2.1A or 2.4A to properly charge.

Check with your tablet manufacturer to find out what your specific make/model requires and the look closely at the charger you are using to see what the OUTPUT is ... e.g. 5.2V 2.4A

Mar 29, 2015 | Lenovo S5000 7" Android 1GB 16GB

1 Answer

Hi my I phone is not charging while it is on and when switch off it start charging???


Hi -

It is not uncommon for some devices to be unable to accept a charge while in use - especially if not using the supplied charger. This is because the amount of power required to USE the device (your iPhone in this case) exceeds the amount of power provided by the charger.

If trying to make a call, you may be able to coax your iPhone to accept a charge if you shut down un-needed services such as wifi, GPS and BlueTooth radios along with turning the brightness of the display down, etc. This greatly reduces the power requirements of the phone; and if the charger is powerful enough, it will begin to slowly charge your phone. The charge rate will be significantly lower - requiring a longer time on the charger - whenever the phone is being used AND charged. Once the phone is no longer being used, the charge rate will immediately increase, since AC power no longer has to be divided between charging the battery and operating the phone lights, radio, etc. This shortens the amount of time needed to recharge, significantly.

Whenever possible, use the the supplied charger - or one with the SAME voltage, polarity, and voltage type (AC or DC). The amount of current or wattage should be the same or greater than the original. Most phones use USB connectors and are 5 Volts DC. USB standards call for between 1/2 and 1 Amp current. Since watts is equal to volts x amps, this example would represent a 2.5 (if 1/2 amp) to 5 (if 1 amp) watt charger. If you could find a higher wattage charger while still maintaining the DC voltage requirements, you would be able to use and charge the phone at the same time.

I hope this answers your charger question & good luck!

Sep 04, 2012 | Cell Phones

1 Answer

Am using iPhone 4, the battery was low (not fully drained) suddenly it went off & since that time i cannot switch it on & it doesn't turn on. My phone is almost dead for 2 days now.


1. 1. Connect the Charger and wait for 3-4 hours. After that, try to turn the iphone.
2. If not, try it on another charge Charger or usb port.
3. If all else fails, you need to contact the service for battery replacement or repair.
www.smartjet.mobi

Nov 30, 2010 | Apple iPhone Smartphone

Not finding what you are looking for?

493 people viewed this tip

Ask a Question

Usually answered in minutes!

Top Smartphones Technologies Apps Experts

kakima

Level 3 Expert

102366 Answers

yadayada
yadayada

Level 3 Expert

75197 Answers

The Knight
The Knight

Level 3 Expert

73698 Answers

Are you a Smartphones Technologies App Expert? Answer questions, earn points and help others

Answer questions

Loading...