Phantom 3 battery low voltage

Markusmanbro · Mar 25, 2018

Hi, I took out my p3s for a flight thrn I noticed that the voltage on the battery was really low and the battery was only charged to 89%..
Two of the cells were at 3,51 and 3,53 the other two were at 3,47.
What should I do?

Cellblock776 · Mar 25, 2018

Not much context here.... Did you charge up your batteries before going out to fly or had this one been sitting a few days and begun it's programmed self-discharge? Is this a DJI battery or an aftermarket version?
You have 123 charge cycles on this one. It may have just decided to retire early.

Markusmanbro · Mar 29, 2018

Cellblock776 said:
Not much context here.... Did you charge up your batteries before going out to fly or had this one been sitting a few days and begun it's programmed self-discharge? Is this a DJI battery or an aftermarket version?
You have 123 charge cycles on this one. It may have just decided to retire early.

I charged it until it shut down by itself and this is the original battery. What should I do with it? Throw it through the window?

Cellblock776 · Mar 29, 2018

Markusmanbro said:
I charged it until it shut down by itself and this is the original battery. What should I do with it? Throw it through the window?

That seems like a waste. I'm thinking doorstop, paperweight, maybe something artsy. If you have a hot glue gun and some glitter you could probably come up with a nice design.

RodPad · Mar 29, 2018

Markusmanbro said:
I charged it until it shut down by itself and this is the original battery. What should I do with it? Throw it through the window?

It hadn't set for more than 12 hours after a charge?

What was the percentage when you started your flight? it will be on your flight log.

What was the outside temperature?

Rod

RunningWithScissors · Mar 29, 2018

Cellblock776 said:
You have 123 charge cycles on this one. It may have just decided to retire early.

Maybe it's just me but, I see more than one red flag in that photo. I don't know all of the circumstances around that battery but, if that's fully charged at 89%, with 123 charge cycles on an original battery, plus deviations on two cells, the only thing that's missing is a little battery voice crying out, "Stick a fork in me, daddy, I'm done!" Not sure but, that may be some kind of record. Definitely time to break down and buy a second battery, and retire that one before it commits suicide - in flight.