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Reward for battery help

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Aug 1, 2021
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I have four genuine DJI TB47 batteries. After a recent full charge, one of the batteries give me an error in the go app. The error is invalid battery. It worked perfectly previously and has had 11 charges on it. I’m going to estimate it being three years old.
The battery has always been reliable. After the full charge I got that error. It behaved normally during the charge cycle, each of the four lights illuminating as the battery went through the charge process. I tried to let the power just run down to as close as I can estimate it being as close to dead as possible without shutting down on its own. My strategy was to go through that process and then a full charge. The strategy was based on other people online suggesting the process. The battery was just sitting in the inspire one powered on to let it discharge. I was not able to start the motors. I continued to investigate looking for a solution. I found a post that suggested taking the top off and remove one of the balancing ribbons. I did that and let it sit for one hour before plugging it back in and giving the battery a full charge again. The process did not work so I am at a dead end. Maybe I should just give up and consider this thing junk but I just hate to when there may be some hope. There is no swelling whatsoever on the battery. So I thought what the hell, if somebody can come up with a solution that works, I will etransfer them $50. I know it’s not a lot but it is something.
 
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Sorry to hear about your battery. It sounds like a connection between the battery cells and the smart board has shorted out. This would freak out the computer since it sees essentially a dead cell. I would be willing to buy it for $40. I use the lithium in a variety of projects.
 
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I sorry for that. I assume you have already considered cleaning the contacts.
Good luck.
Yes, straight away I did that, thanks for the idea.
Sorry to hear about your battery. It sounds like a connection between the battery cells and the smart board has shorted out. This would freak out the computer since it sees essentially a dead cell. I would be willing to buy it for $40. I use the lithium in a variety of projects.
Thanks for the offer, I will keep that in mind.
 
Joined
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Buy a dead TB47 and swap the smartboard in it. Ignore the cycle count on the new one and just run a charge/discharge/charge cycle to see the proper capacity.
 

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