thezombiekat
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Safe USB battery extender
I am building a custom case for my ASUS tablet PC. I would like to include a supplemental battery so it will last a full day of use.
The tablet charges from USB but came with a wall charger (that takes a USB cable) its output is 5V 2A.
I have found many methods on the net for making this on the net all are very simple, almost identical and most carry a warning that you cant just leave the unit charging untended because the batteries could overcharge, over heat and leak.
Commercial units don’t have this problem so I assume they have a circuit built in that prevents overcharging.
Is it possible for me to build that circuit into my tablet case, where would I find instructions.
Thankyou
The Zombie Kat
I am building a custom case for my ASUS tablet PC. I would like to include a supplemental battery so it will last a full day of use.
The tablet charges from USB but came with a wall charger (that takes a USB cable) its output is 5V 2A.
I have found many methods on the net for making this on the net all are very simple, almost identical and most carry a warning that you cant just leave the unit charging untended because the batteries could overcharge, over heat and leak.
Commercial units don’t have this problem so I assume they have a circuit built in that prevents overcharging.
Is it possible for me to build that circuit into my tablet case, where would I find instructions.
Thankyou
The Zombie Kat