Rockbox mail archive
Subject: Re: NIMH 2200 ma batteries
From: Michael O'Quinn (michael_at_oquinn.info)
Actually, the charging is not related to the battery capacity setting in
Rockbox, not in the slightest. The battery capacity setting simply lets
Rockbox give you a time estimate (number of hours remaining) based on the
percentage of charge left.
Charging is carefully controlled to charge batteries of ANY capacity.
Basically, the charging algorithms charge until the battery voltage drops
slightly, which indicates they are getting hot. Since this only happens
when the batteries are fully charged, the batteries themselves determine
how much charge they accept.
You can read the "Frequently Asked Questions about Batteries and Charging"
document on the Rockbox web site for more info.
Note that the Player's charging is controlled entirely by the hardware, so
the above may not apply.
On Wed, 9 Jul 2003, Timm Schneider wrote:
> Yeah, it will work, but you have to change
> the capacity in the Archos.
> Am Mittwoch, 9. Juli 2003 06:54 schrieb Steve McGlinn:
> > Hi!
> > I purchased a set of Powerex 2200 maH NIMH batteries for use in my ajb
> > recorder 20. I also got the external charger, which Powerex boasts has "a
> > unique charging alogorithm that allows the batteries to accept a more
> > complete charge," yada yada yada....
> > Here's my question: Since these are 2200maH batteries, and my ajb recorder
> > 20 shipped with 1500 maH batteries, will the ajb charger fully charge these
> > batteries, or will they be charged only to the capacity of 1500 mah
> > batteries?
> > One more lesser question: Is it alright to charge the batteries outside of
> > the ajb? I ask this because I find that getting the batteries in and out of
> > the ajb is extremely awkward. They are a tight fit under those rubber
> > bumpers and I'm afraid I'm going to damage something by repeatedly
> > inserting and removing them.
> > thanks!
> > Steve
Page was last modified "Jan 10 2012" The Rockbox Crew