This is a small application which displays the current battery information in large text.
The current version assumes:
<100ma = Trickle charge (battery almost charged)
<200ma = Slow charge (50% or greater charged)
<500ma = Medium charge (full speed USB charge)
>500ma = Fast charge (dedicated AC adapter)
Source
This article is over 2 years old — the linked page may have changed, moved, or been taken over since then.