>From: Kris Tilford <[EMAIL PROTECTED]> >Date: Sun, 28 Sep 2008 04:30:49 -0500 > >On Sep 28, 2008, at 4:11 AM, Aaron wrote: > >> Thanks to Dan, moss and Simon Royal for their responses. >> >> I did finally manage to test my PRAM battery and it's quite strong >> -- about 4V according to my meter, which is only a bit inaccurate. > >It should be 3.6v and remain 3.6v to the bitter end. It's not the >voltage, it's the amperage that's the difference between new and dead.
I've had a few of those batteries that, when I pulled them from old computers, tested with a decent voltage, but after lying around for a year or two showed no voltage at all. Maybe lithium batteries are different but, with every other type of battery I've used, the voltage gets lower and lower until they go dead. And how do you measure the amperage of a battery? Amperage is a characteristic of a circuit, not a power source. If a battery isn't connected to a circuit, there's no amperage. If you connect it to a circuit with low resistance, you get high amperage. The higher the amperage, the faster the battery is drained. If the amperage is too high, like in a short circuit, the battery can get dangerously hot. I once had a AA battery in my pocket and it was short-circuited by my keys. Fortunately, I noticed the heat before it burned a hole in my pocket and my anatomy. (Made me think of that children's ditty, "Liar, Liar! Pants on fire!") - Aaron --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed Low End Mac's G3-5 List, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
