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Old Feb 03, 2012, 01:18 PM
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Thanks, Not sure if it is the battery or something on board. I measured the battery voltage and it still seems OK and the camera still works if only for a few seconds.

I have ordered a new battery and will see how that goes, no problem with soldering.
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Old Feb 03, 2012, 05:00 PM
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ggtronic's Avatar
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Quote:
Originally Posted by robertig View Post
Not sure if it is the battery or something on board.
I have ordered a new battery and will see how that goes, no problem with soldering.
just dont thrust the # 11 charge circuit i saw mine go up to 4.3V
wich mean over charge
ounce i made my battery mod, i only charge it with a real lipo
charger with futaba servo plug wich will prevent from going over 4.2V

after killing the original battery with the bad charge circuit, i now leave it out of camera case... easy to change...
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Last edited by ggtronic; Feb 03, 2012 at 05:20 PM.
Old Feb 03, 2012, 06:22 PM
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United States, MA, Walpole
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Quote:
Originally Posted by robertig View Post
Thanks, Not sure if it is the battery or something on board. I measured the battery voltage and it still seems OK and the camera still works if only for a few seconds.

I have ordered a new battery and will see how that goes, no problem with soldering.
Battery voltage only tells you how fully charged the battery is. It says nothing about the cells ability to hold voltage under load. When lipos age and deteriorate, the internal plates start to build up with deposits, and this increases their internal resistance. The cell can still be charged up or very close to 4.2V, but during discharge, the internal resistance causes the voltage to drop more than normal, to the point of not being able to power the device they once could.

The #11 charge current was on the high side, which encourages plate deposits and early aging. The charge current was cut back to about 145mA (about .6C rate) on the number #16 version, which uses the same battery. That should increase the cycle life at the expense of increasing the charge time, which is 2 to 2-1/2 hours from a full discharge.
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Old Feb 03, 2012, 06:29 PM
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TOM : i still like my # 11 and wait for my # 16
and still enjoy all your R&D !

but still : when you charge a brand new lipo
with higher than 4.2v , it's a mather of time before you will kill it
lipo handling = both charge current and top OFF voltage...
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Old Feb 03, 2012, 07:31 PM
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Cranfield U.K.
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Preaching to the converted
still All lopos die - eventually - just like us, some sooner than others.
Mike
Quote:
Originally Posted by ggtronic View Post
TOM : i still like my # 11 and wait for my # 16
and still enjoy all your R&D !

but still : when you charge a brand new lipo
with higher than 4.2v , it's a mather of time before you will kill it
lipo handling = both charge current and top OFF voltage...
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Old Feb 03, 2012, 07:40 PM
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Tom Frank's Avatar
United States, MA, Walpole
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Originally Posted by ggtronic View Post
TOM : i still like my # 11 and wait for my # 16
and still enjoy all your R&D !

but still : when you charge a brand new lipo
with higher than 4.2v , it's a mather of time before you will kill it
lipo handling = both charge current and top OFF voltage...
Yes, going over 4.2 volts also stresses the cell, and 4.2 is the widely accepted best maximum voltage for a lipo. I wasn't disagreeing with that... just adding to it.

You can find literature citing lipo manufacturer's claiming a maximum voltage of 4.3V, and other citations claiming voltage over 4.23V promotes plate deposits, too. So I agree with 4.2V being the max. recommended voltage for safe use and longer cycle life.
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Old Feb 03, 2012, 09:23 PM
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last weekend video : # 11 on my CL415 nose :

Low light with white ice made it tough job to chase light

i still enjoy that little 20g camera

FrostBite... (1 min 16 sec)
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Old Feb 04, 2012, 06:17 PM
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Old Feb 04, 2012, 06:52 PM
Dance the skies...
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Quote:
Originally Posted by ggtronic View Post
last weekend video : # 11 on my CL415 nose :

Low light with white ice made it tough job to chase light

i still enjoy that little 20g camera

http://vimeo.com/36175692
Brrrr! If that ice is smooth enough for skating, you could get some neat "chase plane-like" shots with the right plane.
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Old Feb 04, 2012, 06:54 PM
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Tom Frank's Avatar
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Originally Posted by DangerDave View Post
Same here ggtroinc. I'm having a lot of fun with my #11 too.

http://youtu.be/16AOtaYvrfw
You've got some great scenery there on a sunny day, if you can raise the venetian blinds!
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Old Feb 05, 2012, 01:04 AM
Ook!
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New Zealand
Joined Aug 2007
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Here's some sunny day flying to warm you up again - this is on-board my Strega 3 meter F3F glider at Ngaranui Beach, Raglan

Strega at Raglan, Jan 2012 (3 min 56 sec)
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Old Feb 05, 2012, 07:01 AM
Fidler & twidler
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Originally Posted by skaffen View Post
Here's some sunny day flying to warm you up again - this is on-board my Strega 3 meter F3F glider at Ngaranui Beach, Raglan
What does the American Constitution say a bout Cruel and Unusual punishment ? Its snowing like .... here you so&so

twaz good, but the music showed up the deficiencies of my laptop speakers, had to get the cans out to appreciate the evil base line
Mike
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Old Feb 05, 2012, 09:50 AM
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Joined Feb 2012
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Hi Tom Frank

I have a question about #11 Jumbo BMW.
Tho power on button it's more sensible and every time I put the Keychain in my pocket, get power-On!
You should set that comes on only after prolonged pressure of 1-2 seconds (as the #16 keychain)
Is there a solution to this problem?

Thanks
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Last edited by befanello; Feb 05, 2012 at 10:28 AM.
Old Feb 05, 2012, 01:26 PM
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Quote:
Originally Posted by Tom Frank View Post
you can raise the venetian blinds!
That's cruel tom

Quote:
Originally Posted by skaffen View Post
Here's some sunny day flying to warm you up again, Raglan
thanks Skaffen , lucky man ! almost cruel like Empeabee quote

Quote:
Originally Posted by Tom Frank View Post
Brrrr!
Agree ! -15 degC this morning, but zero wind... too nice
even with frost bite , i need to fly : excellent result with full sun light # 11 key chain !
Ice Tree (2 min 48 sec)
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Old Feb 05, 2012, 01:37 PM
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Originally Posted by ggtronic View Post
That's cruel tom

thanks Skaffen , lucky man ! almost cruel like Empeabee quote


Agree ! -15 degC this morning, but zero wind... too nice
even with frost bite , i need to fly : excellent result with full sun light # 11 key chain !
http://vimeo.com/36233474
Very Nice Movie BRAVO!!
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