1 files changed, 15 insertions, 1 deletions

diff --git a/docs/BATTERY-FAQ b/docs/BATTERY-FAQ
index 35829a2dae..2be97c0833 100644
--- a/docs/BATTERY-FAQ
+++ b/docs/BATTERY-FAQ
@@ -79,10 +79,13 @@ A6: http://www.greenbatteries.com sells 1800 mAh NiMH cells at $3.25USD each,
 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 
+    which charger was used (see Q3) and the bitrate you use (higher bitrate
+    means more harddisk runtime). It depends a lot on the condition of the 
     batteries. With 2000 mAh batteries, you should reach about 10 hours or more. 
     We are looking into implementing more battery-saving techniques in rockbox 
     to make it rock longer.
+    If you have a modified AJB with 8 MB, you can reach playing times of up to
+    16 hours with 2100 mAh batteries.
 
 Q8: Can I use different batteries in my Archos? How much playtime would
     I gain by using 1800 mAh batteries instead of the 1500 mAh ones?
@@ -245,3 +248,14 @@ A16: Nothing's wrong. The battery level is calculated out of the voltage.
      battery voltage, it is usual that the battery level is going a little bit 
      up and down sometimes. This cannot be avoided although we tried to make the 
      battery level display as little confusing as we could.
+
+Q17: My batteries are at 92%, the charger is connected to my recorder, deep
+     discharge is off. But charging doesn't start. What's wrong?
+A17: Charging starts if the battery level is below 85%. This is because
+     charging batteries that *are* already more or less full is not good for
+     the batteries and the end of the charging cycle can't be detected safely.
+     So it's better to start at a level at least as low as 85%.
+     If you want to have full batteries in the morning, leave the charger
+     connected over night. Charging will then start some hours later. The
+     second possibility: Use the Archos charging algorithm. At least,
+     your batteries will be full one more time. ;-)
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