Hami21 Show full post »
Hami21
The issue is that i dont know how to fix it... i thought it would be easy but i think that i have more chances on put a fire instead of fixing this battery.... NEW BATTERY I CANT BELIEVE THAT....
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Hami21
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I have this issue with a battery and it is one of the balance wires that has come adrift.
When measuring across the plug it reads 11.78 or even up to 12.4 but when you come to charge it says connection break.



The issue that in this case i dont have any volt on the main wires....negative positive... any idea what can i do? i open up the battery but i can see anything that is burned up or any sign of overheat... where should i pay attention to? I m afraid that i can cause a fire or anything :/
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bogusbandit56
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The issue that in this case i dont have any volt on the main wires....negative positive... any idea what can i do? i open up the battery but i can see anything that is burned up or any sign of overheat... where should i pay attention to? I m afraid that i can cause a fire or anything :/

I do not touch the batteries with a soldering iron as I am scared of blowing myself up.
Sorry buddy I can`t help you out with this problem.
If you don`t have any readings remove you`re xt60 and check the voltage on the bare wires as Malukk suggested.
If that fails it looks like you will have to buy a new battery
Wot, no Depron?
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Hami21
Hahaha that makes two of us my friend...Ι'm afraid that i have to buy a new one...as you already said...:/ Truth is that...i try to open it up a little bit more...and 2 of 3 cells gives me 3.9 volts but one cell dosent have any mesure...if i could somehow to change that cell?? is it worth it??
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Wildthing
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Hahaha that makes two of us my friend...Ι'm afraid that i have to buy a new one...as you already said...:/ Truth is that...i try to open it up a little bit more...and 2 of 3 cells gives me 3.9 volts but one cell dosent have any mesure...if i could somehow to change that cell?? is it worth it??

Are you able to check right at the cell for voltage bypassing everything else?

Ohm meter gauge comes in handy also for checking continuity, Just checking for voltage is only part of trying to find a break in a circuit.

I have changed cells in a couple batteries, it's a bit of a pain and really have to be careful you don't short anything out while cutting and soldering and because I don't have large enough shrink wrap just duct taped it together when done.
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bogusbandit56
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Hahaha that makes two of us my friend...Ι'm afraid that i have to buy a new one...as you already said...:/ Truth is that...i try to open it up a little bit more...and 2 of 3 cells gives me 3.9 volts but one cell dosent have any mesure...if i could somehow to change that cell?? is it worth it??

Did you check the voltage before you tried to solder the new plug on?
I think it seems strange that you lost a cell by only splashing the wires.
Wot, no Depron?
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KK
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Are you able to check right at the cell for voltage bypassing everything else?

Ohm meter gauge comes in handy also for checking continuity, Just checking for voltage is only part of trying to find a break in a circuit.

I have changed cells in a couple batteries, it's a bit of a pain and really have to be careful you don't short anything out while cutting and soldering and because I don't have large enough shrink wrap just duct taped it together when done.


Couldn’t agree more with Jeff’s suggestion. I think it is logical to test continuity using your multimeter to make sure you havent blown the PCB that connects cell 2 and 3. Alternately, check the voltage of individual cells directly on the exposed battery leads. If each of the cells show normal voltage on their leads, then you work your way up...
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Hami21
Hey guys...because I'm not good at my english...i made this video to see and if you can to let me know what should i do...
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Wildthing
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Hey guys...because I'm not good at my english...i made this video to see and if you can to let me know what should i do...

At about the 3 minute mark you switched you meter to reading ohms but you were not testing the right way. For continuity you are measuring resistance through 1 circuit, not testing for voltage. For example in that mode when you touch your two probes together the reading is 0 which tells you there is no resistance and that is good. Now say as a example on the positive cable from your battery end hold one probe in there and the other at the soldered joint where that same wire is soldered at the battery. If you have good continuity the reading should be 0.

Just as an example, if I cut the positive wire in the middle you would still show 3.9 V at each cell but no volts at the battery end. Testing each cable/circuit for resistance you will find where the break is.
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trying2fly
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Hello Guys! I need your help if you can!! I was trying to solder some XT60 connectors onto my new rhino 11.1v 2200 lipo battery today and when i was readjusting the metal clip on my helping hand that was connected to the wire, i accidentally had it touch the wire and it sparked. I thought i had ruined the battery, but i grabbed one of my cell readers and it read all 3 cells to me, all about 3.8 volts. The battery wasn't puffy at all either. So i continued to solder the connections onto the battery and i was able to do it. I plug it into my Imax B6 charger to test the battery connection and when i go to balance charge it as a lipo, it gives me the "connection break" message. I went to solder on another connector to the battery and still gives me the same message, but the cells still read to me. I even went and plugged in one of my older batteries and the charger is able to charge that just fine.

So what is my problem here? I am an inexperienced solderer so i am partly blaming my terrible soldering skills, but when i pull on the wires it does not detach from the connector. I want to believe that i messed up the battery, but it does not seem like it either. What can i do now???

For fear of hurting yourself at this point it would be frugal to part with this battery in lieu of a new one. It is not worth a burned hand or a spark flash to the eye....chas
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Hami21
Hey guys!! I have great newssss!! Finally one good friend of mine (he is car electrician) have found where the problem was he found that in this point that i have the pen it was the (leak) resoder that spot and now i have 4 batteries hehehe next step maiden with F-14
3 of those batteries had the same issue and now all of them are working again!!
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Wildthing
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Hey guys!! I have great newssss!! Finally one good friend of mine (he is car electrician) have found where the problem was he found that in this point that i have the pen it was the (leak) resoder that spot and now i have 4 batteries hehehe next step maiden with F-14
3 of those batteries had the same issue and now all of them are working again!!

This is where testing for continuity comes in, not testing for voltage. . Glad it is up and working.
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Hami21
Hopefully now i have 4 of them Thank God! Much more time to fly
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