PDA

View Full Version : New type of Li-Poly Battery


MarkD
04-02-2007, 02:56 PM
http://www.airthunder.com/

Note the safe to over discharge bit. Anyone know any more about them?

DebianDog
04-02-2007, 03:08 PM
Never heard of them I I would love to know how they are getting 25C packs that you can't over discharge.


Among the key features of AirThunder batteries is the ability to withstand over-discharging. Over-discharging has been a major issue with conventional Li-poly technology as it leads to over-heating, deformation, and degradation of the battery. Model aircraft owners are often advised to time their operation to avoid detrimental effects. Our proprietary formulation and packaging technology has circumvented such problems, allowing the battery to be safely discharged to zero volt. No low-voltage cut-off circuit is needed. This is an industrial-first; a true breakthrough in Li-poly technology. In addition, our battery maintains its voltage till the very end of the discharge cycle. This means you can fully enjoy your flying experience worry-free.

Pinecone
04-02-2007, 03:27 PM
Funny, they say no dischage limit in the opening text, but in the pack specs they list a minimum voltage of 2 volts per cell. Still better than we have.

flyinfool
04-02-2007, 04:02 PM
They do say that it will handle an occasional discharge to 0V but it not recommended for normal use.
I see that as if you accidentally leave some thing plugged in or turned on you do not need a new battery for the next use.

They do recommend flying till you feel the power dropping off.

creightoncarr
04-03-2007, 01:55 PM
I'm tempted to order a 3S pack to test in my 450. For $60 if they live up to 1/2 of the claims they may not be that bad. They only problem I see is that many LiPo chargers won't charge if the voltage is too low.

DebianDog
04-03-2007, 02:14 PM
I'm tempted to order a 3S pack to test in my 450. For $60 if they live up to 1/2 of the claims they may not be that bad. They only problem I see is that many LiPo chargers won't charge if the voltage is too low.

Good point.

Also call me a pessimist but... I would love to know how some unheard of company in Iowa was able to do what no other company, corporation, or battery manufacturer in the world has been able to accomplish.

You would think he would sell the formula to one of the larger distributors and make a fortune! This just seems "too good to be true" :dontknow

creightoncarr
04-03-2007, 02:36 PM
Someone's got to try it though :mrgreen:

DebianDog
04-03-2007, 03:22 PM
Someone's got to try it though :mrgreen:

I vote you! :D

creightoncarr
04-03-2007, 04:02 PM
Twist my arm.

flyinfool
04-03-2007, 04:04 PM
I second that vote! :D

On the website the even covered the low voltage charge.

I have a club member that is constantly over discharging packs almost talked into trying one. :twisted:

creightoncarr
04-03-2007, 05:24 PM
On the website the even covered the low voltage charge.



I missed that on the website. I'll have to go back and look. I really am tempted to order one just to test it. Worst case scenario I get a so-so pack and am out 60 bucks. If I order one I will post here and follow up with data once I have it.

MarkD
04-03-2007, 06:18 PM
Finless should get one and test it on video - just run it to zero then recharge

could be like paint drying waiting for it to go poof :badair:

Magnasanz
04-03-2007, 07:52 PM
Finless should get one and test it on video - just run it to zero then recharge

could be like paint drying waiting for it to go poof :badair:

I'd be interested to see what happens. Would be better doing a time lapse and cycling one 5 times from full to 0 and back again.

creightoncarr
04-05-2007, 08:54 AM
Looks like there should be a review of these batteries on trextuning.com soon.