Phone rated at lower voltage than battery.

[kui_blader]

I was tasked with finding a new battery for an old phone, the Samsung S4, and it says it's rated for "3.7V 1800mA" but I can only find Samsung batteries rated at 3.8V. Will there be a problem if I use a 3.8V battery?

 

[741chandlerw]

No problem! I have an s3, same 3.7v battery, and it works on straight up 5v no problem.

 

[kui_blader]

No problem! I have an s3, same 3.7v battery, and it works on straight up 5v no problem.

Ok, but i now noticed it has three contact points instead of four, I'm not so sure this is an S4 anymore..
Is it some "fake" S4 or just another model?

 

[741chandlerw]

No problem! I have an s3, same 3.7v battery, and it works on straight up 5v no problem.

Ok, but i now noticed it has three contact points instead of four, I'm not so sure this is an S4 anymore..
Is it some "fake" S4 or just another model?

upon booting, it should say, maybe it is a different phone. I could not imagine a fake s4 though.

 

[kui_blader]

No problem! I have an s3, same 3.7v battery, and it works on straight up 5v no problem.

Ok, but i now noticed it has three contact points instead of four, I'm not so sure this is an S4 anymore..
Is it some "fake" S4 or just another model?

upon booting, it should say, maybe it is a different phone. I could not imagine a fake s4 though.

I have no working battery though, so I can't boot.

 

[kui_blader]

It seems to be made in China by some weird company.

 

[kui_blader]

I just noticed I have put this in "Graphics Cards", I'm sorry.

 

[741chandlerw]

I just noticed I have put this in "Graphics Cards", I'm sorry.

If you have an old charging cable of any kind, cut off the male end, connect the red to the positive on battery terminal, and black on negative. just be sure not to short the wires. That's how I got my phone up and running.