Deadshorting is when you discharge all your cells down to absolute zero, instead of a predetermined low amount (usually .5-.9 amps) on a tray. Once you have them down to zero, you connect the ends of the pack with a wire (most common method) so that positive is soldered to negative and then it becomes deadshorted. Don't touch them until they are exactly at zero or you could cause a small explosion, kill the cells, etc. Once the cells are deadshorted and the wire attached, you can remove them from the tray. Do not attach the wire after they are removed, since the will naturally start to pick up some voltage out of the tray. When you are ready to charge, just unsolder the wire and charge it. People debate the time you can keep it deadshorted, but I keep them at zero for up to a week. Deadshorted packs will give you more punch since you are charging them from absolute zero and this gives you more run time on that charge which equals a longer power punch on the initial first quarter discharge during a race. Be careful though, in the long run, it will reduce the life of the batteries and adds more wear and tear, but if you want to have a subtle affect of more power, deadshort. Also, because the pack is starting at zero, sometimes chargers will get confused and will false peak in the first few minutes of charging. Just watch it and start it again or if you have a charger that locks charging in for the first few minutes, do that. Good luck.
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