Dead shorting batteries
#16
Dead shorting may provide a TINY TINY increase in voltage output initially... but is in no way worth the extra wear and tear put on the cells... Peaking the pack, running it cool, then discharging down to 1v or .9v per cell, is PLENTY... and will give 99.999% the performace as dead shorting...
its not worth it.
its not worth it.
#17
Tech Elite
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Last edited by howard hudson; 10-01-2003 at 09:15 AM.
#18
Amen.
#19
ok heres an upadate on the batteries after race day
They where protty punchy out of corners but not as much top speed as normal ( that was with all the batteries
)
any 1 know why that would be
They where protty punchy out of corners but not as much top speed as normal ( that was with all the batteries
)
any 1 know why that would be
#20
Originally posted by holycow
Dead shorting may provide a TINY TINY increase in voltage output initially... but is in no way worth the extra wear and tear put on the cells... Peaking the pack, running it cool, then discharging down to 1v or .9v per cell, is PLENTY... and will give 99.999% the performace as dead shorting...
its not worth it.
Dead shorting may provide a TINY TINY increase in voltage output initially... but is in no way worth the extra wear and tear put on the cells... Peaking the pack, running it cool, then discharging down to 1v or .9v per cell, is PLENTY... and will give 99.999% the performace as dead shorting...
its not worth it.
-dave
#21
Originally posted by acid_rain182
any 1 know why that would be
any 1 know why that would be
When you short out a cell, the instantaneous, insanely high, amp draw causes the normally stable chemicals in the cell to become...less stable. The chemical reaction that causes batteries to work gets thrown all out of whack from the high rate of speed it's asked to perform at. Hydrogen gets pushed out of the molecules into bubbles that form inside the cells, preventing the reaction from happening at an efficient rate in the future. If the pressue form those bubbles gets to great, your cells will outgas some of it. Maybe not enough for you to notice goo at the end of your cells, but even with just the internal bubbles, your packs will have less voltage and less runtime because the chemistry no longer has access to some of it's hydrogen. It may seem to have more 'punch', but I'd be willing to bet if you threw those cells on a TurboMatcher for a few cycles, you'd find out that you'd hurt them.
-dave
#22
Tech Regular
iTrader: (3)
Originally posted by lonestar1127
iszit impt to discharge at 30 mAh??? wat if i discharge it only at 20 mAh?
iszit impt to discharge at 30 mAh??? wat if i discharge it only at 20 mAh?
as for deadshorting, i've had only good luck w/ nicads. i'm sure the smc guys know what they're doing, but all my nimhs that i've dead shorted never really worked well for me after that.