Rockbox mail archive
Subject: Re: Jukebox not playing very long - battery life question
From: Neon John (johngd_at_bellsouth.net)
On Thu, 21 Aug 2003 16:01:12 +0100 (BST), John Stevenson
>There does seem to be an issue with charging and Rockbox - that is being investigated.
>In the mean time there are a couple of ways to ensure your batteries are fully charged.
>1) Remove the batteries and charge in an external charger - (this is the method I use - plus have a spare set - pref with a rating of 2200) - I get between 10 - 14 hours this way per set of batteries.
Good advice. To add to it, one of the best chargers out there right now is
the Ray-O-Vac 1 hour charger available at WallyWorld, etc. It's $29.95 and,
depending on the particular package, comes with either 4 1800 mah batteries or
a car cigarette cord. This charger contains 4 individual charging circuits so
you can put 4 batteries in, regardless of the individual state-of-charge, and
have them all charge properly. On 2300 mah batteries it takes about an hour
and a half to charge.
For external power, if you don't mind connecting some wires (or getting
someone to do so for you), a very cheap option is a small lead-acid battery.
You can buy a 4 ah 6 volt battery at Lowe's, etc, intended for emergency EXIT
signs, for about $15. It's about the size of a cigarette pack only twice as
thick. From radio shack you'd get a barrel connector cord (like the one on
your charger) and an appropriate wall wart to charge the battery with. Just
connect 'em up and plug it in to the Jukebox. 4 ah is about twice what the
internal batteries have. The combination of internal and external is 3 times.
The battery and the Jukebox will fit in a small camera case that you can wear
on your belt or carry around. The battery is about the same weight as the
I'm about to write up an article on how to do this, complete with 8 X 10 color
glossy photographs (or the web equiv :-), so it will be a cookbook type job.
John De Armond
Cleveland, Occupied TN
Page was last modified "Jan 10 2012" The Rockbox Crew