Using phone battery - is it possible?

[Flowlance]

Is it possible to use a phone battery with the powerboost?
I have tons of old phones lying around, would be awesome if the batteries could be used. And they're pretty small.
This one for example

20160707_114624.jpg (201.81 KiB) Viewed 11726 times

However, it is 3.8V as opposed to 3.7V and has 4 pads for connections. Would this work?

[Fleder]

Yes, they would work, but it can be dangerous to solder onto those pads.
So you would need to build something that creates a connection.
Or you accept the risk of an exploding battery and solder it onto those pads.
Those additional 2 pads are usually for temperature and monitoring the battery health.

[vnman]

Search for FPC plug on aliexpress.

I am thinking of using the phone battery as well.

But first I have to finish modding my after market shell...

[Flowlance]

Yes, they would work, but it can be dangerous to solder onto those pads.
So you would need to build something that creates a connection.
Or you accept the risk of an exploding battery and solder it onto those pads.
Those additional 2 pads are usually for temperature and monitoring the battery health.

Thanks, do you know which pads are positive and negative terminals?

Search for FPC plug on aliexpress.

I am thinking of using the phone battery as well.

But first I have to finish modding my after market shell...

Something like this? http://www.ebay.com/itm/221968777968
Can't remember which phone this battery was for, but it looks like it'd fit

[Fleder]

Thanks, do you know which pads are positive and negative terminals?

No, that varies from battery to battery and manufacturer to manufacturer.
But you should be able to measure it with a DMM.
Or look for the pinouts via the battery's label.

Edit: Be aware that cell phone batteries have no real protection, so use a power supply that has.

[Flowlance]

Thanks, do you know which pads are positive and negative terminals?

No, that varies from battery to battery and manufacturer to manufacturer.
But you should be able to measure it with a DMM.
Or look for the pinouts via the battery's label.

Edit: Be aware that cell phone batteries have no real protection, so use a power supply that has.

Not sure about the protection. If I'm using the official raspberry pi power adapter, and the powerboost 1000c, do I have a protection?

[Fleder]

Not sure about the protection. If I'm using the official raspberry pi power adapter, and the powerboost 1000c, do I have a protection?

Yes, the PB1000C offers all the protection you will need.

[RazorX]

i would be more concerned with what mah that is, its no good using that if your pi's gonna last 10 mins or something

[Pulsar]

I used the battery from my broken Samsung Galaxy s4.

3.8 v was no problem. I soldered wires onto mine without problems too. Plus and minus were easy to find with volt meter. It has 2600 mah and that was great too (better than 2000 from adafruit)

Only problem: it did not fit in the Gameboy because of the screw posts. It fits, but then you can't insert the screws because it does not fit through the battery hole. Also if you screw first, then try to insert the battery later, the door does not close.

I needed it to be about 2mm smaller, so I thought I would remove the case. DO NOT DO THAT! I accidentally removed a tiny microchip and ruined the whole battery. Turns out that chip is the protection, so my battery is now too dangerous to use ><

[Flowlance]

i would be more concerned with what mah that is, its no good using that if your pi's gonna last 10 mins or something

It's 2100 mah, should last longer than adafruit's 2000mah then.

I used the battery from my broken Samsung Galaxy s4.

3.8 v was no problem. I soldered wires onto mine without problems too. Plus and minus were easy to find with volt meter. It has 2600 mah and that was great too (better than 2000 from adafruit)

Only problem: it did not fit in the Gameboy because of the screw posts. It fits, but then you can't insert the screws because it does not fit through the battery hole. Also if you screw first, then try to insert the battery later, the door does not close.

I needed it to be about 2mm smaller, so I thought I would remove the case. DO NOT DO THAT! I accidentally removed a tiny microchip and ruined the whole battery. Turns out that chip is the protection, so my battery is now too dangerous to use ><

Alright thanks! This might fit since it's a bit smaller than yours. 2100mah. I believe it's from a galaxy s3