Second. This 0.9v value takes that in consideration. If you have a really good pack and have them side by side (like we do in R/C cars) you can drop it up to 0.5v.
This 0.9v value is just to let you calculate up to where you can discharge a pack.
9.6v pack:
8cells -> 0.9v*8 = 7.2v
Should discharge up to one of the following:
7.2v onload voltage
OR
120°F/50°C
And you must check voltage when the pack is connected on the discharging circuit. Or else voltage reading will be higher than reallity since the pack will recover quickly.
If there is a single cell of the pack heating up very fast, this means your pack is near the en of it's life. Nothing can be done about it.
Now for the question we are talking about
: Get your good charger you are talking about, and set if for 3 full cycle starting with dicharging. At the end, your pack should be OK to go play.
*edit*
Oh and BTW I just charged my packs today and looked at the values...
In a stock gun (mine is stock, can't talk about an heavily upgraded one) I shot around 2000 bb's in 4 hours. Charged my pack... and only 940 mAh was spent in 4 hour. I really doubt that the pack will be discharged soo fast that the voltage will vary for more than 0.3v for one cell to an other. Hell we drain a 1400mAh pack in under 5 mins when we race!!! Never had any problem of overdischarge! Kinda more than 900 in 4 hours!
Oh and when a stock AEG stop firing, completly depleted, The pack is still around 1.1v per cell.
In short, get a good hobby grade charger with discharge capacity. Buy some good packs, not some chinese no brand shit. Try no to force your packs drained. And you don't need to cycle everytime you charge.
*reedit*
Quote:
if you discarge a nimh pack you may break it so dont do that.
cells you have not used for a while should be charged at 1/10 C for 16 hours.
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Since you said that, means you must have done a lot of research. Then my 4200mAh matched pack should be charged at only 420mAh for a wakeup, then never discharged.
How come the makers of the pack tell me to Completly drain the pack using a 35A discharger up to 0.5v/cell, then charge it at 6A using a peak detect charger set at 6mV neg. delta-peak???
Means that the world best battery pack distributor is wrong??
Oh btw I am talking about SMC, Short for "Superior Matching Concept", Principal distributor of race grade battery packs.