🚀 go-pugleaf

>    My question: The battery was very low, and so I plugged the unit and
>the transmitter battery pack into the factory supplied recharger
>overnight. Ofter about 24 hours of recharging, the voltage on the
>transmitter pack read at about 5.6 V, according to my Tower Hobbies
>voltmeter (top of the "green" scale). However, the transmitter pack read
>at only 9.5 V, which is rather low (the low end of the "green" scale).
>Also, the voltmeter on the transmitter read only about 80%. When the
>unit was new, the voltmeter read above 11 V, and the scale on the
>transmitter read above 100%.
>    Is my batter dead? Can I fix it? Or should I just get a new battery.
>Is this the expected life?(two years)?

(Klaxons...!)  WARNING - BATTERY UNSTABLE, DO NOT FLY.  REPEAT... ....

:)

The battery may not be dead, but you might have to cycle it a few times
to restore it's working order.  Charge/discharge it 3-4 times, noting
how long it takes to discharge each time.  This is probably best done
with a cycler for best results, especially since leaving the transmitter
on for 2-3 hours at a time may heat up your RF deck more than you want.

But anyway, if you can determine that the pack comes up to normal standards,
then you should be safe to fly, but keep an eye on the pack over time,
it may not be stable.

Considering the price of another pack ($25?), you might be able to rescue
your current one; but considering the price of a replacement plane (???)
you might want to replace it. 

By the voltage numbers you stated, one cell is obviously not charging,
and may not come around, but it's worth the effort of trying.

  -swb-  (Steve Bixby, sbixby@cup.portal.com)