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Old Oct 08, 2012, 03:12 AM
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Wich lipo charger for rise 4.22V per cell ?

Hi, As above, Im looking for a charger that can charge lipos at 4.22V per cell or higher.

I know Turnigy 10cx can do it, but you know a cheaper charger ?

Thanks
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Old Oct 08, 2012, 05:04 AM
Yes, I know it's upside down.
Sydney, Australia
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Originally Posted by sisequehacer View Post
Hi, As above, Im looking for a charger that can charge lipos at 4.22V per cell or higher.

Thanks
Why? If you want to start a lipo fire, just set your charger to maximum current, or better still, short circuit your battery.
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Old Oct 08, 2012, 06:52 AM
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I think the iChargers can do that. But this shortens the lifespan considerably. I adjusted it to 4.15V, and get excellent results.
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Old Oct 08, 2012, 07:01 AM
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I think the iChargers can do that. But this shortens the lifespan considerably. I adjusted it to 4.15V, and get excellent results.
Thanks Jules, but dou you remember wich model? icharger ?
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Old Oct 08, 2012, 07:17 AM
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Originally Posted by harrow View Post
why? If you want to start a lipo fire, just set your charger to maximum current, or better still, short circuit your battery.
:d:d:d:d:d:d:d:d:d:d:d:d
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Old Oct 08, 2012, 07:41 AM
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Quote:
I know Turnigy 10cx can do it, but you know a cheaper charger ?
You are looking for a cheaper than Turnigy charger that can be set to charge LiPolys past 4.20 V. Sorry but given that some less expensive and even at times more expensiver chargers do in fact charge past thier set points I would be looking for the best quality not a cheaper one.
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Old Oct 08, 2012, 07:57 AM
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I beleive the PL6 and PL8 can charge to 4.22. Not cheaper but relaible.

The question is, why do you wnat to do such a thing? Are you are expecting longer run times? If so the extra .02 volts won't amount to more than a few seconds. And it will shorten the life of the battery.

Glen
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Old Oct 08, 2012, 10:28 AM
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United States, CA, Bear Valley Springs
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Probably a car guy.

mw
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Old Oct 08, 2012, 12:11 PM
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Quote:
Originally Posted by sisequehacer View Post
Thanks Jules, but dou you remember wich model? icharger ?
They all have practically the same software.

Have a glance at the iCharger thread and check the manual in the first post about the option you like, just to be sure.

To get more OOMPH from your packs, warm them up to 35-40C before using, that will be better than overvolting them.
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Old Oct 08, 2012, 01:23 PM
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Originally Posted by ggcrandall1 View Post
I beleive the PL6 and PL8 can charge to 4.22. Not cheaper but relaible.

The question is, why do you wnat to do such a thing? Are you are expecting longer run times? If so the extra .02 volts won't amount to more than a few seconds. And it will shorten the life of the battery.

Glen
Not run times, exactly the oposite. More power, more speed. Time is no problem with stock motors

Thank you all
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Old Oct 08, 2012, 01:47 PM
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To get more OOMPH from your packs, warm them up to 35-40C before using, that will be better than overvolting them.
+1!!!!

A lipoly cell that is charged to 4.15 volts and is at 35C will provide higher voltage under load and make more power (higher speed) than a lipoly cell that is charged to 4.22 volts and is at 22C. Also, it'll do if for a LOT more cycles as it has been empirically demonstrated that repeatedly charging a lipoly cell to over 4.2 volts will increase internal resistance and reduce the number of useful cycles.

Bottom line - Undercharged lipolys that are warm will win a LOT more races than overcharged lipolys that are not warm. And, even if the overcharged lipolys are warmed, they will degrade much faster than the undercharged lipolys.

Mark
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Old Oct 09, 2012, 05:47 AM
A man with too many toys
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The Power Labs will do that (PL6 and PL8).


They are the best chargers on the market.



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Last edited by RC Man; Oct 09, 2012 at 05:51 AM. Reason: Power Lab
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Old Oct 09, 2012, 06:03 AM
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Hyperion EOS 0720I SUPER DUO chargers will let you go up to 4.28v per cell.
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Old Oct 09, 2012, 09:05 AM
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Originally Posted by mrforsyth View Post
+1!!!!

A lipoly cell that is charged to 4.15 volts and is at 35C will provide higher voltage under load and make more power (higher speed) than a lipoly cell that is charged to 4.22 volts and is at 22C. Also, it'll do if for a LOT more cycles as it has been empirically demonstrated that repeatedly charging a lipoly cell to over 4.2 volts will increase internal resistance and reduce the number of useful cycles.

Bottom line - Undercharged lipolys that are warm will win a LOT more races than overcharged lipolys that are not warm. And, even if the overcharged lipolys are warmed, they will degrade much faster than the undercharged lipolys.

Mark
Important part is in bold. You will quickly increase IR which will result in lower C rating and thus less power and less speed which is what you desire. So while you might see what you desire short term after only a few cycles it's going to start dropping off.
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Old Oct 09, 2012, 04:45 PM
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United States, WA, Woodinville
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Originally Posted by Mark Wood View Post
Probably a car guy.

mw

beat me too it.

Car guys wanting to overcharge their lipo's =

Talking Heads - "Burning Down The House" (3 min 59 sec)
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