From 575eafba1f8f3ed040a08f67b65cdfd70e3921dc Mon Sep 17 00:00:00 2001 From: Robert Hak Date: Wed, 21 Aug 2002 10:59:07 +0000 Subject: BATTERY removed git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1865 a1c6a512-1295-4272-9138-f99709370657 --- www/docs/BATTERY | 126 ------------------------------------------------------- 1 file changed, 126 deletions(-) delete mode 100644 www/docs/BATTERY (limited to 'www') diff --git a/www/docs/BATTERY b/www/docs/BATTERY deleted file mode 100644 index 1c2804b181..0000000000 --- a/www/docs/BATTERY +++ /dev/null @@ -1,126 +0,0 @@ -Q1: Are my batteries charged all the time when connected to my Player/Recorder? -A1: Player: the charging is all done by hardware and the exact - functionality is hard to determine. It is however not recommended to keep - the charger connected for more than 10-15 hours if you're not using the - unit. - - Recorder: no. The charging algorithm is carefully crafted in to not wear - out the batteries any more than necessary. If you're using your unit - connected to the charger most of the time, use the 'deep discharge' option - to save your batteries somewhat. - -Q2: Will keeping my charger connected a long time damage my batteries? Can I - leave it over night? -A2: The charger logic lets the batteries charge until they are full. After - that, the charger is disabled, but the device will stay powered on and - continue to consume some power from the batteries (the hardware does - not allow running from the charger without charging batteries, or - powering off with the charger connected). After some time, it will - start charging the batteries again to keep them full. This will - wear the batteries a little, but overnight charging is what most - people do. - - As the Battery FAQ at http://www.greenbatteries.com/ puts it: - "A NiMH battery can be charged and discharged hundreds of times, - but whether that means 200 times or 800 times has a lot to do - with how (you use it)". - -Q3: Does Rockbox charge the batteries more/less/worse/better than the Archos - firmware? -A3: Player: Rockbox doesn't affect the charging on Players, it is all done - by hardware logic out of software control. - - Recorder: The current release of 1.2 is much worse than the Archos - charger, it tends to stop charging much too early and leave the batteries - half empty. - - The current development code (CVS daily builds as of 20.8.2002) is much - better than the 1.2 release, but still not perfect. Linus recently - measured 6 hours continuous playtime after a rockbox charge, and much - over 7 hours after an Archos charge. We are working on fine-tuning - the charger logic to get the most out of the batteries, but the - emphasis is on not overcharging them, since that would damage the - batteries. Better be safe than sorry. - -Q4: What kind of batteries are there in my factory default Player/Recorder? -A4: Both ship with 1500 mAh NiMH (Nickel Metal Hydride) batteries. - -Q5: Is it hard to change the batteries? Does it void my warranty? -A5: The archos manual and web site describe how to replace the batteries, - so you're supposed to do it. They recommend using only Archos-supplied - batteries, but my Recorder 20 unit only shipped with one set. Some - units have been shipped with two sets of batteries. Someone actually had - Archos send him new batteries free of charge after they had weared out, - under the warranty. (have asked from support-technique@archos.com, - waiting for an answer to arrive!) - -Q6: How much do replacement batteries cost? Where can I buy them? -A6: http://www.greenbatteries.com sells 1800 mAh NiMH cells at $3.25USD each, - and I bought 4 of the same GP batteries for 20 euros in an home - electronics & household appliance store in Finland. NiMH batteries are - sold in almost all shops that sell consumer electronics, and in many - online shops. Browse around. - -Q7: What kind of run-time can I expect on a set of fully-charged batteries - when running Rockbox? -A7: For the stock 1500 mAh cells, from 6 hours to 8 hours, depending on - which charger was used (see Q3). It depends a lot on the condition of - the batteries. We are looking into implementing more battery-saving - techniques in rockbox to make it rock longer. - -Q8: Can I use different batteries in my Archos? -A8: Only use NiMH-type rechargeable batteries. It is considered to be safe - to use NiMH batteries of different capacities though, a lot of people - have purchaced 1700 or 1800 mAh batteries to replace the stock 1500 mAh - cells and have the device run a bit longer. - -Q9: Can I use non-chargeable batteries in my Archos? -A9: This is not recommended. The unit has been designed to operate with - four 1.2V batteries producing about 4.8V at most, and using 1.5V - alkaline/zinc carbon batteries will produce around 6.0V, which will - heat up the unit a lot more and might even damage it. The Archos - manual explicitly tells you not to do so. - -Q10: Can I use a different charger? -A10: People have successfully used different chargers with similar - specifications as the stock charger. The charger must have the - same kind of connector with same polarity (center positive/+). - The charger should supply at least 7-8 volts, and if it provides - more than 9V, it probably should be current limited (do not - directly plug it in your 12V car battery or it's charger!). - - Using lower charging voltage will slow down the charging, and using - higher voltage will cause a higher charging current, more heat, - and too much heat and current can damage the batteries or the unit. - Using a different charger will void your warranty and can be - dangerous to your unit, so we can not recommend it. - - Many people are happy using an external quick charger which - is specified to work with NiMH batteries. - -Q11: Can I buy a replacement charger exactly as the one Archos shipped? -A11: The FAQ on the Archos web site and the top of the charger both read: - - Output: 9VDC 600mA - Center positive (+) polarity - - Chargers with similar (or user-adjustable) properties are available - at shops selling consumer electronics. - - -Q12: I often need to stop my player for about 15 minutes or so, and when I do - it runs off it's batteries. I was wondering, which is best: shutting the - player down completely and rebooting it when I want to listen again, or - leaving the unit on? Which way does it draw more power? -A12: In our testing we found the following results: - HDD off, LED off, idle 94 mA - HDD off, LED off, play 97 mA - HDD off, LED on, idle 129 mA - HDD off, LED on, play 131 mA - HDD on, LED on, play 230 mA - HD on, reading, LED off ~ 600 mA - HD spin up before read max 800 mA - - So leaving the unit on and paused consumes ~100mA, and thus much less then - needing to reboot the unit. Your mileage may vary. - -- cgit v1.2.3