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Old Jan 13, 2012, 08:48 PM
aronph is offline
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Originally Posted by Fliprob17 View Post
I try and throw my packs on the charger once every 2-3 weeks just to cycle them - charge, and discharge
i liked my idea better
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Old Jan 13, 2012, 08:49 PM
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well duh.....

....I would too, but for some unknown reason it doesn't always work out that way
Old Jan 13, 2012, 08:53 PM
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Originally Posted by Fliprob17 View Post
well duh.....

....I would too, but for some unknown reason it doesn't always work out that way
you need a sign for your shop and website that says
"Gone flying..be back...maybe"
Old Jan 13, 2012, 08:58 PM
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I've tried

doesn't go over well
Old Jan 13, 2012, 09:02 PM
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Originally Posted by Fliprob17 View Post
I've tried

doesn't go over well
they hunt you down dont they?
Old Jan 14, 2012, 01:24 AM
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Originally Posted by Fliprob17 View Post
I try and throw my packs on the charger once every 2-3 weeks just to cycle them - charge, and discharge
I thought that if they were stored at the correct voltage they would be ok.
Old Jan 14, 2012, 09:08 AM
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Bummed to hear your experience, Bobby. I have the good fortune to fly relatively frequently, so my charge/discharge cycles are much mo' frequent. I have never had a problem like what you ran into. I am curious what the expected amp draw is on those packs. What brand, mAh and C rating are they?
Old Jan 15, 2012, 11:44 AM
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Originally Posted by Luv3d View Post
Bummed to hear your experience, Bobby. I have the good fortune to fly relatively frequently, so my charge/discharge cycles are much mo' frequent. I have never had a problem like what you ran into. I am curious what the expected amp draw is on those packs. What brand, mAh and C rating are they?
Forty F-ing Niners all the way!!

The packs are Rhino 3700mah, 25c so they should put out approx 92a, as I had posted earlier, in 12-2010 they were putting out 74a with the 14 x 7.

On 12-21-2010 my dog was hit by a car which required many $ and approx 4 months that she couldn't walk without carrying her back end in a sling. She was always with me to fly so it was hard to go without her. At the same time I was involved in putting a pool in at my house so my flying time was eliminated. Prior to this I would fly every day sometimes twice since I have a paved runway on my property.

So last December I used my Hyperion to place all my pack at storage voltage, they sat in my barn until approx 1 / 2 weeks ago when I decided I wanted to resume flying. The barn temp ranges from approx 80 deg max for a few days in the summer to a minimum of approx 45 min for a few of the coldest days, the avg is prob about 65deg. Two of the Rhino's had approx 50 cycles on them purchased 10-2009, two were never used purchased 11-2010.

On Friday I made sure all were at approx 80 deg and tested them all with the 15 x 8 prop. The amp draw for all 4 was between 58a & 60a (one of the unused ones was 60a), min voltage was 15.1 or more up to 15.3. I also had a XPS 4000 mah purchased in 2009 that had the same results. It seems strange that they would all be so close to the same performance, it would seem that the unused ones should be better. I wonder if they were used more consistently if they would have lasted longer? I was very happy with the performance when they were new for approx $40 ea. Think it would be worth buying the $100+ lipos or just buy new Rhinos every year?
Last edited by BOBBY1017; Jan 15, 2012 at 12:07 PM.
Old Jan 15, 2012, 12:07 PM
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I have had 15+ batteries from 6s 5000mah turnigy's to 3s 2200mah gens aces and everything in between that stayed good for 15 months of sitting at storage charge of 3.8v a cell. I had them sitting in an ammo can in my storage unit the whole time while i was in iraq. I cycled each one to full charge and down to 3.1 volts and then back to full again before use. It took some time but they all seem to be working fine. Still get good pull out of my 6s 5000mah 20c packs on my 71 slick. I think the cycle process helped but the gens ace packs seemed to survive a bit better than their turnigy exact same equivilant.
Old Jan 15, 2012, 12:12 PM
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Originally Posted by lammbn View Post
I have had 15+ batteries from 6s 5000mah turnigy's to 3s 2200mah gens aces and everything in between that stayed good for 15 months of sitting at storage charge of 3.8v a cell. I had them sitting in an ammo can in my storage unit the whole time while i was in iraq. I cycled each one to full charge and down to 3.1 volts and then back to full again before use. It took some time but they all seem to be working fine. Still get good pull out of my 6s 5000mah 20c packs on my 71 slick. I think the cycle process helped but the gens ace packs seemed to survive a bit better than their turnigy exact same equivilant.
Thank you for your service protecting all of us!
Old Jan 15, 2012, 12:22 PM
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Thank you for your support :-)
Old Jan 15, 2012, 02:54 PM
-= GYRO =- is offline
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thank you for your support :-)
+1!
Old Jan 15, 2012, 09:44 PM
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Originally Posted by lammbn View Post
the whole time while i was in iraq.
Kind of makes my reasons seem pretty lame...
Old Jan 16, 2012, 12:59 AM
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Originally Posted by BOBBY1017 View Post
Kind of makes my reasons seem pretty lame...
Nah... It's an all volunteer service. Nobody forced us in...
Old Jan 17, 2012, 11:30 AM
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Originally Posted by slickg66 View Post
Nah... It's an all volunteer service. Nobody forced us in...
Exactly. My own dumb @$$ signed the paperwork.


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