ps3 controller - Page 1
Forum section: electronics / repair

author: zerorisers
author_rank: Regular Contributor
timestamp: March 12, 2015, 11:51:03 pm
content: A few minutes ago I tried to charge up an old ps3 controller I had but it wouldn'. Do anything. I did what I knew best and took it apart. Checked the battery voltage on the 3.7v li-ion cell. It is at a whopping 27.2 volts! What I want to know is what could have caused this and what could it have messed up on the board?edit: testing with a 4AH battery I have had laying around. It runs but I do wonder what was wrong with the old battery.

author: ElektroQuark
author_rank: Unknown
timestamp: March 13, 2015, 07:27:32 am
content: Did you tried to charge it with the PS3?

author: PA0PBZ
author_rank: Super Contributor
timestamp: March 13, 2015, 11:32:02 am
content: Quote from: zerorisers on March 12, 2015, 11:51:03 pmSince there should not be a DC converter in there I find it hard to believe and my guess is that somehow you made a mistake and the real voltage could be 2.72 volts.

author: zerorisers
author_rank: Regular Contributor
timestamp: March 13, 2015, 08:19:56 pm
content: Quote from: PA0PBZ on March 13, 2015, 11:32:02 amI thought I made I made a mistake at first as-well, so I took it apart, and it seems to me there was an error on the board of the battery. The cell was showing 2.6 volts but on the output of the board it was the 27.2 So I hacked on an old cell I had laying around. Will post pictures in a few minutes. Of what the old cell + board looks like, and what a ghetto job I did. here you can see the photots I have taken that explain the situation. hopefully they are decent enough.https://drive.google.com/folderview?id=0B8rOHVwhGx0ddXAydVA3NFBQdXc&usp=sharingQuote from: EdoNork on March 13, 2015, 07:27:32 amYes I did, using different chargers, even different plugs. Nothing worked. I am able to use it now but uncomfortably as I hate this mains plugin soldering iron that takes 2-3 min to heat up. used solder paste and a lighter.

author: Monkeh
author_rank: Super Contributor
timestamp: March 14, 2015, 01:19:16 am
content: Quote from: zerorisers on March 13, 2015, 08:19:56 pmTop right hand of your multimeter display. That says 26.1mV.Autoranging multimeters strike again.

author: zerorisers
author_rank: Regular Contributor
timestamp: March 14, 2015, 03:27:46 am
content: QuoteOh! Thats my misread!well now I need to Figure out what is truly wrong. I haven't tested the charging circuit yet. I will do that when the battery shows low. Using a 4AH battery rather than the old 300mAH. So it may take a bit longer. Waiting for at lease one bar of the battery symbol to disappear so that I may test. Thank you for pointing that out Monkeh.

author: poot36
author_rank: Frequent Contributor
timestamp: March 16, 2015, 06:51:15 am
content: If the battery is below 3 or so volts the protection circuit on it will prevent it from charging. That is why you are getting a few mV of out of the battery. Try charging the battery slowly at a low current 50 to 100 mA until it reaches 3 volts or better yet 3.6 volts and then the protection circuit will need to be reset by just charging the battery normally in the controller.

author: amyk
author_rank: Super Contributor
timestamp: March 16, 2015, 03:40:32 pm
content: A lion cell with 27.2V would have puffed up and exploded rather spectacularly already, so the more logical explanation is that you should double-check your measurement.