think my zippy is dead

[Boaterguy]

charged all 4 of my zippies up and discharging the first one with 12V 58watt lightbulbs after approx 45 minutes the lights went out, i was in the other room and didn't notice when, I just noticed there were no lights on and ran in there to unplug ASAP.
lipo is warm, cell volts are about 2, .5, 2, lipo is warm and puffed about 2 or 3mm, puffing is not an issue but I have it with me just in case
what should I do????
starting to hate hobbyking a little more

[Make-a-Wake]

If you feel the batt is fried and of no use now, fill up a bucket of water, add some salt, and place it in there for a couple days..........RIP

[Boaterguy]

is it recoverable and safe to run in a 6S2p setup? (it's a 2650 3S)
I just don't want to wait for more packs (or shell out more money for blue lipos)
I am NOT buying lipos from HK anymore, at least 2 of 5 dead packs from my shipment so far.
what I don't understand is 15 minutes before I went in the voltage was at 3.6/cell
lipo is mostly cool now

[Boaterguy]

voltage is climbing
2.5,.7/.8,2.6

[Doby]

Why hate Hobby King? They didn't overdischarge your LiPo...you did.

[Make-a-Wake]

How far past the 3.6v per cell did you run them................15 more minutes? 3.7v is completely dead, you may have over discharged them. I also dont recommend using light bulbs to discharge finicky/dangerous batts.

[Boaterguy]

if 3.7 is completely dead, why is the usual LVC 3-3.4V/cell?
with 58watts (8*7 watt 12V lightbulbs) i should be drawing 2.5 amps (2.54 continuous), with 2650 mah packs that should give me an hour of discharge time
i had 2.5, .5, 2.5V on the cells after 42 minutes and four seconds

[Make-a-Wake]

Were they new? If they were, they come in at a storage level of 3.85v per cell..............if thats the case, you wouldnt have an hour of discharge time simce they were only 30% charged.

Secondly.............LVC's are set so when the batt reaches that level UNDER LOAD it cuts out. If a batt hits 3.0v under load and LVC kicks in, it will then rebound to around 3.7-3.75 volts. 4.2 is fully charged per lipo cell and 3.7 is 100% depleted............some do not know this but its a fact.

[Boaterguy]

alright.
they came at about 3.8V and I charged them all to 4.2/cell
cells should have been at about 3.4/3.5V under a 2.5a at the time they cut out
middle cell won't generate any voltage now.

[Drax21]

Of all the batteries I have had from Turnigy -Zippy seem to be the worst. Normally just bad resistance though.

[Rumdog]

why were you discharging it with a light bulb? bored?

[skellyo]

what should I do????

Learn how to be more responsible with lipos. On top of that, don't blame retailers for your misuse of the products they sell.

Sent from my EVO 3D using tapatalk.

[siberianhusky]

Man you are your own worst enemy when it comes to rc boats!
Why wouldn't you use a charger to bring your batteries back down to storage levels or whatever?

[Boaterguy]

i was cycling them to break them in
my charger discharges very badly and discharges to 3V/cell, I was going for about 3.4 a cell and with the lightbulbs (used on some plane packs) i could discharge at 2.5 amps instead of .4/.5 that my charger can do
I honestly don't understand why it's my fault that the packs died after 42mins and 4 seconds at 2.5 amps, if it's 2650, that should be approx 75%, if discharging 75% of the capacity of a pack brings the cells down to 2.5V,.5V and 2.5V, then it's my fault

[Make-a-Wake]

Bottom line is that no-one, including the manufacturers suggests using light bulbs to alter Lipo voltage. Thats why high tech chargers are made..........if it discharges at 0.5a then it just takes 2+ hours. Maybe you should invest in a better charger to properly maintain your Lipo "investment"......................BTW you're not the first one that has had the first time user problems.............no biggie.