Are my batteries swollen and about to explode?

[ocphantom]

I've made the mistake of keeping my batteries charged 100% and storing them for months at a time.

Flew the other day with my 100% charged battery then when it got down to around 60% I started getting battery low alert and the bird started to auto descend.

See the photos of my batteries and the 1.08 assistant battery snapshot.

I noticed one of the batteries has cell voltage of around 3770 while the other 3 have around 4170.

Which battery is swollen and/or should be thrown in the recycle bin?

 

[ocphantom]

 

[burlbark]

If you can feel any ballooning of the plastic wrap the battery is on the way out. There have been a couple of them that have caught fire, I would not keep them in the house.

Jeremy

 

[Mori55]

Just mail those batteries to me.

 

[Mori55]

I've flown with lipos that were slitely swollen. Never really had any problems. If your losing flight time , run it down to 10% then charge it up and see how it flys , seeing if you g t anymore flight time.

 

[ocphantom]

Is cell voltage of 3770 an indication that I shouldn't use it?

Also seems so subjective the amount of playability of the battery plastic wrap. Some have more play than others but how can you be sure that one is definitely a ticking time bomb paper weight ?

 

[burlbark]

Is cell voltage of 3770 an indication that I shouldn't use it?

Also seems so subjective the amount of playability of the battery plastic wrap. Some have more play than others but how can you be sure that one is definitely a ticking time bomb paper weight ?

Keep them in a fire proof container they can erupt.

I have 5 of them here that customers have sent in with their birds that I could not send back in the mail. They average about 4 min of flight time. If they drop voltage quick and are puffy they are done. They dont come back reliably. Its a small price to pay to avoid a crash and loss of Phantom/Vision.

Jeremy James