Battery Mod Info

[Raphael Dahan]

Anyone know where I might find one of these that can handle 50 Amps? It needs to be light enough to fly (<40g preferable).

http://www.prodctodc.com/300w-power...iver-module-voltmeter-p-547.html#.VtuOIJMrJTI

And the battery is? BTW the module's weight is 105g

 

[Raphael Dahan]

Anyone know where I might find one of these that can handle 50 Amps? It needs to be light enough to fly (<40g preferable).

http://www.prodctodc.com/300w-power...iver-module-voltmeter-p-547.html#.VtuOIJMrJTI

You can maybe make a modification to the module , eleminate the heavy metal case and warp it with some light material ?

 

[damoncooper]

You can maybe make a modification to the module , eleminate the heavy metal case and warp it with some light material ?

True, but I would need much higher current capability.

 

[JOEREZ1XM]

True, but I would need much higher current capability.

What exactly is the concept, I don't understand the setup you're trying to do?

 

[Luis Morales]

What exactly is the concept, I don't understand the setup you're trying to do?

i think you don't understand because he has not said anything yet.

 

[Luap]

Appears you are charging the main battery with the auxillary battery(s) and you are looking for a voltage regulator.
And the auxillary battery picture you posted seem to have a 5 and 8 balancer cable.

Are any of you analyzing your battery data out of the Dat logs using DatFile.net/downloads as converter?

 

[ATU]

My guess would be using a 7S battery to charge the TB47/48 batteries?

 

[Raphael Dahan]

Appears you are charging the main battery with the auxillary battery(s) and you are looking for a voltage regulator.
And the auxillary battery picture you posted seem to have a 5 and 8 balancer cable.

Are any of you analyzing your battery data out of the Dat logs using DatFile.net/downloads as converter?

I think that i understood Damon's idea, it‘s simple but clever. He try to find a source of a rely big capacity, connect it to a restrictor or a kind of regulator in series, and then to the TBx. This regulator will restrict the carrent comes from the large capacity batt to the right values that fit the carrent and resistant of the TBs batt. In this way we have an enormous carrent quantity that charging and charging and.... and we brake the flight time limits. now, we have to find this enormous batt with a minimal weight, i think that Damon is on the way to find it. good luck Damon we are all with your effort.

 

[Luap]

Is there any chance you could post the link of the FLYxxx.Dat where remaining power increases ?

 

[JOEREZ1XM]

Just finished another flight test with my 5550mah battery. 100% throttle almost the whole time, made it 30,153 FT one way, total flight distance 75,160 FT, 24:28 flight time, with a light crosswind. My auxiliary battery had 7% left at the end and TB48 had 9%, I was thinking of having a 7400mah lipo built. My 5550mah weighs 702g a 7400mah would weigh about 940g, I'm not sure what extending the TB48 battery will do as the auxiliary batteries seem to discharge at an equal rate, maybe once you get over the capacity of the TB48 it will be needed, has anyone tried an auxiliary battery larger than the TB48 and tested what's left in the auxiliary? Also does anyone know what weight of auxiliary battery is the limit were the benefit of extra capacity is negated?

 

[unyks]

Just a suggestion: add a lipo warner to your auxiliary battery on the 1st flights until you have a good feeling about the discharge rates...

 

[unyks]

Let the modding begin..

 

[slim.slamma]

Charge to full, then note how much charge (mah) they took. Subtract from total capacity for mah remaining at end of flight.

Then discharge to Storage level till next flight.

Tool of the trade

 

[richeanx]

Ah. Altitude could be a factor. 14x4.8 props or DJI 13-inch? The greater pitch 14's or the DJI high altitude props might be needed. Have you ever seen a message about max motor speed reached?

 

[richeanx]

Ah. Altitude could be a factor. 14x4.8 props or DJI 13-inch? The greater pitch 14's or the DJI high altitude props might be needed. Have you ever seen a message about max motor speed reached?

Hey Damon, Just tested the 13x6's up here and all is well, my gps shakes are no more!

 

[JJB Inspections]

Love to see a vid on how to do this
I will check YouTube
Thanks!

 

[damoncooper]

Love to see a vid on how to do this
I will check YouTube
Thanks!

Instructions in a step by step PDF on the first page of this thread, if that helps,

 

[damoncooper]

Just a quick update on the idea to defeat the capacity limit of the DJI battery: I think I now have all the pieces in place and just need some time to flight test. Hopefully Sat I'll know whether the approach I'm taking will pay off in extra flight time or be a complete dud.

 

[Mercer2]

Just finished another flight test with my 5550mah battery. 100% throttle almost the whole time, made it 30,153 FT one way, total flight distance 75,160 FT, 24:28 flight time, with a light crosswind. My auxiliary battery had 7% left at the end and TB48 had 9%, I was thinking of having a 7400mah lipo built. My 5550mah weighs 702g a 7400mah would weigh about 940g, I'm not sure what extending the TB48 battery will do as the auxiliary batteries seem to discharge at an equal rate, maybe once you get over the capacity of the TB48 it will be needed, has anyone tried an auxiliary battery larger than the TB48 and tested what's left in the auxiliary? Also does anyone know what weight of auxiliary battery is the limit were the benefit of extra capacity is negated?

This battery is 7000mah and weights 797g that would be a good experiment to do

Thunder Power RC TP7000-6SHV

 

[slim.slamma]

This battery is 7000mah and weights 797g that would be a good experiment to do

Thunder Power RC TP7000-6SHV

I think you got it
Nice weight!