Take the time to read the info provided by these companies.
http://www.spcracing.com/ (click the battery care link)
http://www.surgeworldwide.com/faqs.html
http://www.harrisrc.com/batterycare.htm
http://www.feralbatteries.com.au/res....aspx?id=%2029
http://smc-racing.com/ (click the smc charging link)
You need to discharge and equalize to keep all the cells in the pack so when you recharge the pack all the cells are at or near equal performance. This achieves the best performance out of your pack.
Discharging should be done at 20-35 amps. This will depend on how high your equipment can discharge. And DO NOT completely discharge your Intellect packs. Discharge time depends on energy left in the packs.
Next you equalize. I equalize down to 0.9v per cell with the Novak Smart Tray. You will find this pretty common, especially with the Intellect batteries.
What type of equipment are you using/considering?
Edit: Here is another good thread on equipment.
http://rctech.net/forum/showthread.p...ighlight=deans
the CTX-D is a good peice of equipment for the money but you don't have to spend that much to get the job done.