I just got a 20-2944-1 PS2 Dash 8 and I would like to replace the battery. I have done two others with a 2.5 Farad cap. This one is 4. Will it work?
Attachments
Images (1)
Original Post
Replies sorted oldest to newest
no u need the 2.5 farad 5 volt one here Is the web sight where techs purchase them. you have to be careful as some of the cheap ones can blow your ps 2 board if they fail!
https://www.digikey.com/produc...0/589-1008-ND/946808
I prefer battery"s they last at least usually 10 years or more!
batteries are much cheaper then ps 2 boards even if you can still find one!
John & Alan,
That's the one that I've used to make 50+ supercaps for my own 3 volt PS2 engines.
The Digikey one is a good choice except for one small issue...
Here's one from eBay, #142926244416, $1.42, it will work fine for the PS/2 battery replacement job.
Attachments
John, shouldn't it read 2.5 F?
1.5F seems to work fine for me.
If you remember the old way of building these, they used two 3.3F 2.7V caps in series. That yields 1.65F of capacitance, and those worked just dandy. Anything from 1.5F to 2.5F should be fine. I doubt I'd go above 2.5F, simply because I'd start to be concerned about the charging time and the extended load on the charging circuit.
The Farad is charge capacity. I used the 2.5 instead of 1.5 because of the higher capacity to maintain voltage. The issue is the higher in capacitance you go, the longer to charge. You also need to watch the resistance you want a small resistance value, not large.
John the issue is not the zero, rather the obsolete line on the main page
G
Virtually all of the twin round caps in the heatshrink have a low enough ESR for the task, it's the coin batteries that are not suitable. That being said, one of the big issues with eBay is most of the caps don't specify the ESR, so you just have to know what you're looking for. If you want a bunch of them, I recommend buying one or two and testing them before you commit to a large buy. 
George, the obsolete line is bad, but the zero means you can't buy them no matter if they weren't obsolete. 
I don't really know what this stuff is. I got mine from G.
gunrunnerjohn posted:Virtually all of the twin round caps in the heatshrink have a low enough ESR for the task, it's the coin batteries that are not suitable. That being said, one of the big issues with eBay is most of the caps don't specify the ESR, so you just have to know what you're looking for. If you want a bunch of them, I recommend buying one or two and testing them before you commit to a large buy.
George, the obsolete line is bad, but the zero means you can't buy them no matter if they weren't obsolete.
Not true, you can buy, they will just be on back order. Obsolete is far worse.
Think they are back in stock page says, Quantity 1500
