Help Transmitter lipo cells.

Started by manojswizera, April 12, 2012, 09:27:49 AM

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manojswizera

Hi modellers.  One of my Transmitter battery cell, has gone Zero while using. 2nd cell from my 3S lipo is showing 0.00  :o
This is my Lipo  http://www.hobbyking.com/hobbyking/store/__9787__Turnigy_1450mAh_3S_11_1v_Transmitter_Lipoly_Pack.html

My Charger  http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=102_96&products_id=156

Please help me to charge it. or let me know is there any other solution to it.  :help:  :help:  :help:  

Manoj Sharma


Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.

Dharmik

I have same battery and ran into same situation, however not zero but around 1.1 volts so charger was unable to detect it. Just put it sometime and try again. It worked for me. Other method is to charge by ni-mh charger, somewhere posted on forum by a user but i forgot it.

hyd_quads

I have the same problem too! I got a 1.3Ah 3S LiPo (I guess it's meant to be used on Txs) as a gift when I purchased a bigger battery.
All the 3 cells of the battery are visible to the outside seperately, and the outermost cell, which has apparently suffered a minor physicial damage gives me nothing more than 0.3V. So my 3S is a 2S now, even after charging. Someone please help! ???

anwar

There are already very informative threads on "reviving" over-discharged lipos.

http://www.rcindia.org/search2?search=%22trickle+charge%22
Hangar : Please see my introduction.
RC India forum and me : About this forum.

manojswizera

Thanks Anwar sir, Read all those related , but now , what can i do to live that cell ?  ???
Some one suggested to use different charger (nimh)

Please any other option to live it again. Can i try to charge it again with same charger for more than a hour . Because some one suggested not to charge such cell, it may catch fire.
Please SENIOR members help  :help:
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.

anwar

Did you understand what "trickle charging" means from reading those responses ?  If you did, then you should be all set for *trying* it out.  Remember that there is no guarantee for this, and some lipos can be revived, others are lost forever.
Hangar : Please see my introduction.
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manojswizera

Anwar sir , i understand "trickle charging". but the charger i have doesnot have any settings to bring charging rate at 0.1A
Should i buy a new charger ?  Please suggest a good charger with light load on the wallet.
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.

flying truck

Did you check the output voltage on the cell using a multimeter?

manojswizera

Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.

flying truck

I do not know how that device works but i suggest you test using a multi meter.

https://sites.google.com/site/tjinguytech/charging-how-tos/balance-connectors/

This link will show you which pins to check

manojswizera

@ flying truck 
That device is perfect in detecting lipo voltage . I am using it from long time, ans it shows correct volts on my other battery.
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.

flying truck

#11
Yes but how accurate is it when the lipo discharges below its normal threshold? In any case it you really think the cell is giving out "0" volts then there's not much that can be done. And for trickle charging you can use an ni-cd/ni-mh charger.

manojswizera

Thanks a lot. I will try with ni-cd/ ni-mh charger. We see if i get one .
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.

anwar

For trickle charging, the lower you go on charge current, the better.  Hopefully what you are trying is around 0.2A.
Hangar : Please see my introduction.
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manojswizera

The cell did not got charged. At last I carefully remove that cell and converted the lipo in 2s.
Friend as stated on this tx lipo it is low discharge with Discharge(c) =   1.  Can i use the new modify 2S lipo with my brushless motors ?
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.

manojswizera

Modelers waiting  for your Valuable feed back . :)
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.

manojswizera

Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.

anwar

Typically TX lipos will be around 3C discharge rate, so they would not *usually* provide enough current to run brushless motors.  You have to know your current consumption requirements to say with absolute certainty.

The short answer is NO.
Hangar : Please see my introduction.
RC India forum and me : About this forum.

manojswizera

Thanks for the reply Anwar sir    :thumbsup:
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.

flying truck

it goes like this

(1450/1000)*3C (if 3c is the discharge rate) = 4.35 amps

avijit17basu

http://www.hobbyking.com/hobbyking/store/__2055__hexTronik_Balancer_Charger_Dual_Charge_Capable.html
Hope i have copied the link right. it is the last but one charger on page 2 on the hobbyking list of battery chargers.
It charges each individual cell separately through the balance plug. So it does not ram the whole charging current through the output leads. Very useful for TX lipos. no need to disconnect the battery. just charge in situ with the ballance plug.
i got one from Sai. Very low tech, but perfect for me. Works well. Again no guarantees, but if you want, i can try charging the battery for you. you have to pay return postage if you don't want to buy the charger.
hope this helps
regards
Avijit