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Old Aug 14, 2007, 01:43 PM
Giant Scale Nut!!
flynz4me's Avatar
Keizer, OR
Joined Feb 2004
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Data
Data Logged my puffed DN Power 2150's last night...

I have been continuing to fly regardless of the fact that my CHEAP (By cheap I mean crappy) DN Power batteries are puffed. Below is a graphical analysis of how they sag from the get go.

BTW I ordered new batts this A.M. from our buddies at Maxamps!!! + the 3 yr warranty for 11 bones.

Flynz
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Old Aug 14, 2007, 08:00 PM
JAM
MaxAmps CMO
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Nine Mile Falls, WA
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If you ordered the 2100's your gonna love them.........

Jason
MaxAmps
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Old Aug 14, 2007, 09:51 PM
Giant Scale Nut!!
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Keizer, OR
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Heck yeah I ordered the 2100's, hopefully they'll be up for the challenge!!!
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Old Aug 14, 2007, 09:58 PM
Bob Templeton
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USA, AL, Huntsville
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For me the 3S 2150mAh 15C absolutely suck.

My third one is starting to puff after only twenty cycles. The previous two have already been turned-in for disposal due to puffing and not giving the current. I adhered to safe and conservative LiPo guidelines. I never pulled more than 20A off these batteries and never dropped them below 11V.

DN Power: If the battery won't do 15C, don't put "15C" on the battery.

My LHS even had them starting to puff in the case..."brand new".
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Old Aug 15, 2007, 09:09 AM
JAM
MaxAmps CMO
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Nine Mile Falls, WA
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flynz4me if you go to our website and look in the alley you'll find an album with discharge graphs in it. A few are on the 2100's in different set-ups from my 216 watt t-38 to Tony's TREX 450 and his 300 Extra. It's a great collection that we will be adding to.

Jason
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Old Aug 15, 2007, 12:06 PM
Giant Scale Nut!!
flynz4me's Avatar
Keizer, OR
Joined Feb 2004
625 Posts
Quote:
Originally Posted by T3chDad
For me the 3S 2150mAh 15C absolutely suck.

My third one is starting to puff after only twenty cycles. The previous two have already been turned-in for disposal due to puffing and not giving the current. I adhered to safe and conservative LiPo guidelines. I never pulled more than 20A off these batteries and never dropped them below 11V.

DN Power: If the battery won't do 15C, don't put "15C" on the battery.

My LHS even had them starting to puff in the case..."brand new".
No flippin' joke man, I have the "20c" packs 2150mah. Maybe Jun at XUS meant 02c, then I would have thrown them in my DX7, wait they still would have puffed!!
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Old Aug 15, 2007, 12:08 PM
Giant Scale Nut!!
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Keizer, OR
Joined Feb 2004
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JAM,

Any where you can point me that has comparisons of MAXAMPS and FP and TP pack performance??? Thanks

Devin
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Old Aug 15, 2007, 10:20 PM
JAM
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Nine Mile Falls, WA
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Your best bet would be to google the terms. Try Discharge graphs for FP and TP.

Jason
MaxAmps
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Old Mar 01, 2008, 07:21 PM
Registered User
Denver
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Does the puffing of the DN batteries mean anything?
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Old Mar 01, 2008, 10:06 PM
Giant Scale Nut!!
flynz4me's Avatar
Keizer, OR
Joined Feb 2004
625 Posts
Well yeah it means that the chemistry has been stressed and the chemicals are out gassing inside the cell bags. I have experienced loss of power as well, aka the voltage sags immediately even after a fresh charge... If you want budget lipos go to www.hobbycity.com They have great deals on lipos and seem to hold up well...

Devin
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Old Mar 01, 2008, 10:09 PM
Ohh Snapp!
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How did the Maxamps packs hold up?
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Old Mar 01, 2008, 10:54 PM
Giant Scale Nut!!
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Keizer, OR
Joined Feb 2004
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Amazingly well, I bought the 3 year warranty on them and other than a slight mishap with the balancer tap layout vs what I ordered they absolutely rock!!! My TREX couldn't hurt them and my Extra is flying both and it is really happy too!!!
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Old Mar 02, 2008, 01:11 AM
Go ahead... Build it to crash!
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Conroe, TX
Joined Apr 2007
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Quote:
Originally Posted by vrex
Does the puffing of the DN batteries mean anything?
It means they are probably vislero cells of the same batch that xcite battery had. Check out this thread for some info. Xcite did a recall on them as they all puffed. It didn't matter what you did. I did break in cycles at 2A discharge and they puffed. Bad batch due to cheap materials used. They should be replaced.

http://www.rcgroups.com/forums/showthread.php?t=736819
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Old Mar 02, 2008, 05:33 PM
inconceivable
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Maggie.
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Old Mar 02, 2008, 05:42 PM
Registered User
Cleveland, Oh
Joined Mar 2005
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Quote:
Originally Posted by JAM
Your best bet would be to google the terms. Try Discharge graphs for FP and TP.

Jason
MaxAmps
jason@maxamps.com
www.maxamps.com
Or try the battery vault. Search that in the battery section. I always thought it was a sticky, but then I came here and couldn't find it.
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