If you just use the discharge cycle on you charger, then Use a DPD, what's the safe procedure to dead short your 4 cell 4200 or 4600 batteries? And how long should you keep them this way?

the pack needs to have 0 voltage in it before you dead short..a very safe way to dead short is with solder.the solder melts if too much voltage is left in the pack...kinda like a fuse. dpd to 0.00 volts per cell.novak tray set on dead short mode....integy 0-30 place in tray until pack cools than dead short.

Thanks Kat, but then do you leave them shorted until you use them next? Thanks

yup leave them dead shorted..fact do not undo them until you are ready to charge.

must use a long lock out feature 99% of the time due to false peaks...

once you dead short that pack always dead short it.....dead shorting does not work with every 4200 pack....some it works great on others don't respond so well to it.

either way you will lose runtime with the newer cells....good luck

Another thing.

A cold deadshorted pack you charge for the 1st time during the day seems to charge better when I put in about 200 seconds in the pack and then re-dump the pack on the 0-30 before charging for good. The charge curve starts at a lower voltage and tends to climb steadier (less flat), so less fo a tendancy to false peak.

What exactly does "dead-shorting" do? Does it kick an old(er) pack into life after discharging it down to 0v, or what? I have some Spec 1600/1700 cells that are about two years old (or at least, I bought 'em two years ago new in package).

What exactly does "dead-shorting" do? Does it kick an old(er) pack into life after discharging it down to 0v, or what? I have some Spec 1600/1700 cells that are about two years old (or at least, I bought 'em two years ago new in package).

Clears memory and boost voltage on a pack.

Spec cells seem to charge better on a reflex charge.

Cheers.

who ever saying all this about dead shorting thanks alot

well i discharge each cell down to .9 volts and then charge it b/c i find dead shorting my batterys make them suck come race time

I have used the techniques stated above and have noticed a gain in voltage, and we all know voltage = power. I use a novak tray to go down to .1 volt then a integy tray to bring down to zero then short them when at zero.

Probably because you are not doing it right. :thumbsup:
well i discharge each cell down to .9 volts and then charge it b/c i find dead shorting my batterys make them suck come race time

Best thing I have found by dead shortning batteries is as follows.
do this on a sunday night
make sure battery has no charge
cycle battery at 7 amps with .01 and discharge at 35
remove from charger and note your numbers on battery from charger.
instantly put them on a tray (i use a novak smart tray) set at 0.0
put on till lights go out completely
remove and insert dead short wire across terminals
repeat the process on thursday night and check out numbers and record them.
remove wires from battery when you get to track and charge and go..

My numbers on my packs started out at 4.92 packs and now they are 4.98 and internals of 6.9 and 400 seconds. They run awesome... Hope this helps.

You Shouldnt Be Dead Shorting 4600s At All I Hear It Kills The Pack But I Never Dead Short Mine And They Are Fine As Long As You Equalize Befor You Charge

Rob

My numbers on my packs started out at 4.92 packs and now they are 4.98 and internals of 6.9 and 400 seconds.

I'm not saying your packs don't run great but naturally your 4.92 pack will become a 4.98 pack you lost anywhere from 35-50 seconds of runtime. Don't let your avg. voltage number of a deadshorted pack fool you into thinking it's a killer pack. And I have had some dead shorted stuff run killer but eventually they go down the tubes......fast

I'm not saying your packs don't run great but naturally your 4.92 pack will become a 4.98 pack you lost anywhere from 35-50 seconds of runtime. Don't let your avg. voltage number of a deadshorted pack fool you into thinking it's a killer pack. And I have had some dead shorted stuff run killer but eventually they go down the tubes......fast

That is why.... Lipos is the new electric!

lipos all the way :D

I can see if this was a Lipo thread bu it wasn't. And as soon as the majority of the country starts to use Lipos the Lipo guys will be crying for a new energy source. Don't mean to be rude but the original thread started out to be about dead shortening.

there is always a J/A in every crowd! lipo shmipo

there is always a J/A in every crowd! lipo shmipo

I know Kat, we've got you here huh!

thats right i'm the only J/A in these parts.

Yea! Katf1sh has a dead shorted brain and he's still a good guy:freak:

cliff quit chatting online and lay some rug! he he

Yea, yea, I hear ya. It will be done before you know it.cliff quit chatting online and lay some rug! he he