Honey Badger LI-ION batt pack

Router, repeater (extender), GPS unit, antenna, tablet, FPV goggle, HD battery, charger, carrying case... etc.
Post Reply
3nslav3
Batterys getting low
Posts: 908
Joined: 27 Jan 2012, 13:34
Drone Type: AR.Drone 2

Honey Badger LI-ION batt pack

Post by 3nslav3 » 14 Oct 2012, 02:49

some guy on the parrot boards had an interesting question about using Li-Ion cells from power tools to fly the drone....

I think that is perfectly possible!

after some google searching I ended up with "18650" Li-Ion cells
these cells are VERY light, very cheap, very safe and can store up to +-3000mAh
they look a bit like the traditional AA batteries but a little bit bigger and are a lot safer then LIPO (some of them even have a protection circuit build into them)

but there are a few things to keep in mind:
-continues discharge rate: that should be at least 8Amps minimum (ATTENTION: most 18650 cells can only handle 3 - 5 amps)
-max charged and nominal voltage: 4.2 Volts max and 3.7 nominal should be fine
-weight/cel
-size (not longer then 7.2cm)

what I've ordered for testing:
3x Emmerich Li-Ion accu 18650V1
specs:
-capacity: 1500mAh
-max discharge current: 20A => now we are talking :D
-max voltage: 4.2, nominal voltage: 3.7
-size: 18x65mm => PERFECT! stack them 2 flat and 1 high (triangle)
-weight/cel: 38gr => this will make a finished pack that has a weight of about 130 grams
-solder lips

so far it looks pretty damn good!
what might go wrong: the batterie level reading in the drone :lol:

they should arrive in the mail this week, I'll keep you guys posted ;)

I know that there are lighter and cheaper high capacity lipo's out there but some experimentation never hurts 8-)
Last edited by 3nslav3 on 19 Oct 2012, 15:28, edited 1 time in total.

Pape
Ready for take off
Posts: 38
Joined: 01 Sep 2012, 17:01
Drone Type: AR.Drone 2
Location: Canada

Re: Running the AR Drone 2.0 on Li-Ion cells?

Post by Pape » 15 Oct 2012, 03:39

3 to 5 amps discharge, I think the drone will sufer from anemia if it take off as is the most demanding.

3nslav3
Batterys getting low
Posts: 908
Joined: 27 Jan 2012, 13:34
Drone Type: AR.Drone 2

Re: Running the AR Drone 2.0 on Li-Ion cells?

Post by 3nslav3 » 15 Oct 2012, 03:57

Read my post again ;-)

3nslav3
Batterys getting low
Posts: 908
Joined: 27 Jan 2012, 13:34
Drone Type: AR.Drone 2

Re: Running the AR Drone 2.0 on Li-Ion cells?

Post by 3nslav3 » 18 Oct 2012, 18:00

I've finally got my Li-ion cells in the mail today for testing,

the actual weight is about 43 gram / cel
specs:
http://www.produktinfo.conrad.com/daten ... 8650V1.pdf" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;

discharge end voltage will be a problem on the drone! but i'll try anyway ;)

pic of the goodies:
Image

next step: get a balancer connector and some wires (should arrive tomorrow together with some TP LIPO's :D )
and I also got my hands on a power tool batterie pack that contains 8 1500mAh cells, this will be a fun weekend (if the girlfriend doesn't complain to much)

I know that there isn't a sh*t of intrest but I'll keep you guys posted anyways :lol:
Last edited by 3nslav3 on 19 Oct 2012, 18:01, edited 1 time in total.

User avatar
garrock
I've been hit!!
Posts: 2089
Joined: 01 Sep 2012, 16:14
Drone Type: AR.Drone 2
Location: USA - Portsmouth, Ohio
Contact:

Re: Running the AR Drone 2.0 on Li-Ion cells?

Post by garrock » 18 Oct 2012, 18:07

Honey Badger don't care what kind of power source you give it; just give it more !
DroneMod.com --- Worlds first two-drone system: Repeater-Helper and Camera-Worker drones ! --- http://www.REDbirdRF.com

Kawobei
Battery Charged
Posts: 7
Joined: 04 Jun 2012, 11:55

Re: Running the AR Drone 2.0 on Li-Ion cells?

Post by Kawobei » 18 Oct 2012, 22:56

Im sure there are a few subscriptions to this thread and the elders would be watching over. :)

3nslav3
Batterys getting low
Posts: 908
Joined: 27 Jan 2012, 13:34
Drone Type: AR.Drone 2

Re: Running the AR Drone 2.0 on Li-Ion cells?

Post by 3nslav3 » 19 Oct 2012, 15:30

garrock wrote:Honey Badger don't care what kind of power source you give it; just give it more !
IT IS DONE!

the Honey Badger pack is charging as we speak, the weight is about 138 grams according to my scale, a bit heavy but I don't care


here is a pic of the pack:
Image

User avatar
garrock
I've been hit!!
Posts: 2089
Joined: 01 Sep 2012, 16:14
Drone Type: AR.Drone 2
Location: USA - Portsmouth, Ohio
Contact:

Re: Honey Badger LI-ION batt pack

Post by garrock » 19 Oct 2012, 15:49

Send that bad ass up in the air !
DroneMod.com --- Worlds first two-drone system: Repeater-Helper and Camera-Worker drones ! --- http://www.REDbirdRF.com

3nslav3
Batterys getting low
Posts: 908
Joined: 27 Jan 2012, 13:34
Drone Type: AR.Drone 2

Re: Honey Badger LI-ION batt pack

Post by 3nslav3 » 19 Oct 2012, 17:27

IT WORKS!

how it looks like:
Image

testing conditions:
-windy and a very small amount of rain
-my personal flight time expectation before taking off was 5 mins
-take off @ 4.18V / cel
-no hull mounted (heat monitoring)
-landed a few times to check batt temps ( NO HEAT AT ALL!! AMAZING!) => they run a lot cooler then ANY lipo I ever used in my drone
-ARDrone Flight program on a phone
-no wifi extender => some errors in the link quality but i don't care
-video recorded using screencast for android
-joystick null zone @ 0 => giving me a bad time during this test

flight time: about 14 mins (see the flight timer in the video)

cel voltage after the flight with batterie low landing:
Image
the cells can handle discharges up to 2.5 volts but the drone auto landed while the cells where still good to go (3.5V/cel) =>the downside of using li-ion in the AR Drone

the video:

Direct link: http://www.youtube.com/v/GfgRiGPavuA

conclusion:
-it is perfectly possible to run the drone on Li-ion but it will auto land while the pack still has 400-500mAh of the full 1500mAh left due to low cel voltage
-ARdrone Flight doesn't care about loading times at all, it just loads up and connects!!!!!!

Honey Badger for the win!

User avatar
DBS
I've been hit!!
Posts: 2764
Joined: 15 May 2012, 16:27
Drone Type: DISCO
Location: Treasure Coast, Florida
Contact:

Re: Honey Badger LI-ION batt pack

Post by DBS » 19 Oct 2012, 18:03

Nice job bro... didn't you say you found a higher capacity version of this battery somewhere?.. what are the possibilities with those?
WORLD RECORD Phantom 4 flight CLICK HERE
WORLD RECORD Matrice 600 flight CLICK HERE

3nslav3
Batterys getting low
Posts: 908
Joined: 27 Jan 2012, 13:34
Drone Type: AR.Drone 2

Re: Honey Badger LI-ION batt pack

Post by 3nslav3 » 19 Oct 2012, 18:11

DroneBonerStallone wrote:Nice job bro... didn't you say you found a higher capacity version of this battery somewhere?.. what are the possibilities with those?
Thanks man :D

those are a no-go, unless there are 3000mAh versions out there that can handle 8 amps of discharge but i haven't found them yet
(high capacity li-ion cells (3000mAh) can only handle 3-5 amps of discharge :( )

another problem:
higher capacity = almost same size = good thing
BUT!
the weight goes up :(


example:
http://www.conrad.de/ce/de/product/2516 ... 7&ref=list" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;

max discharge rate = 5 amps, 49Grams/cel but it can contain 2900mAh

these would be perfect for powering repeaters tho, they have a build in protection circuit :)
they won't get damaged when you forget to disconnect them 8-)

josh8loop
Newcomer
Posts: 1
Joined: 04 Jan 2016, 17:01
Drone Type: AR.Drone

Re: Honey Badger LI-ION batt pack

Post by josh8loop » 05 Jan 2016, 03:56

I just recently created a similarly constructed pack that uses (3) LG HG2 IMR 18650 3.7V Battery 3000mAh Rechargeable 20A High Drain Flat Top batteries. Rated for 20 amp continuous discharge. I soldered the necessary balance plug and swapped the drone and battery connectors to the XT-60's. The pack gives around 16 minutes flight time with the outdoor hull on. It barely gets even warm. Pretty impressed compared to the Lipo. These 18650 cells are around $6.00 each which is pretty cheap. I actually made two of these packs already and both are working fantastically. I like the safety of the 18650's vs the Lipos as well.

josh

Post Reply

Who is online

Users browsing this forum: No registered users and 6 guests