I have 2 1500mah 7 cell battery packs that i bought back in, jeeze, late 80's early 90's and they still give me almost full runtime.
Yesterday, since I am rebuilding my truck I figured I would try my batt packs out to see if I have to replace them. Neither would hod much of a charge until I deep cycled them about 5 times.
What I would do is charge and then tun around and discharge them until they were almost a the 1 mark on my charger.
((( not mine it is the only pic I could find of it until I get my digital cam replaced)))
I would then charge for 30 min. (yes two charge cycles)
Then discharge until near the 1 mark.
Last charge I hard-wired in a motor "Kyosho 540st" and it ran with no load for over 14 min. Did this with stock and another nameless motor on both battery packs twice. The stock motor lasted 16 min.
When I first started they were pretty shot, now I will not have to fork out anymore $$$ than I really need.
Just an Idea.