/diy/ - Do It Yourself

Hi.

I have a Samsung Young 2 (G130H) that i plan have permanently connected to a power supply. It's manly connected to a car so it powers on when the car is on and powers off when the car is off.

However in the long run this will not be good for the original Li-ION battery, so i am thinking in replace it for an alternative.

I only need that the phone runs at least 2 minutes after the power goes off so a capacitor should do the trick.

However i am not sure what kind capacitor should i use to replace the 3.7V Li-ion (4.81Wh): charge voltage 4.2v

Can someone help?

Thank you