Sorry to hear about your battery situation; sounds like there may be a few bad batches of batteries floating around. There's nothing to do but contact DJI, if it's under warranty they will replace, but if not under warranty - if even a few weeks over warranty, as with mine - they will not investigate further. Good luck! Curious to hear how your situation turns out.
Swelling batteries
- Thread starter gnirtS
- Start date
Mine were 7 months old. Batteries have a 6 month cover on them.
But at $170 each i wasnt impressed having to buy 3 more after only 20 flights each.
The new batch im cooling in the fridge before charging. Otherwise they're still hot many hours after a flight.
But at $170 each i wasnt impressed having to buy 3 more after only 20 flights each.
The new batch im cooling in the fridge before charging. Otherwise they're still hot many hours after a flight.
Mine were (are) 7 months old as well, a batch of two, with less than 40 flights each. They don't stay hot many hours after flight though, your seem to be a bit further down the road. I too was disappointed in the fact that they started puffing so early, with basically normal use. By the way, i was trying to find the auto-discharge settings on the Zoom, since 10 days seems a long time to go before auto discharge, but see that it's now that function has been defaulted at a factory setting as far as I can tell without user ability to intervene and set it at 3 days or 5 days, something more reasonable.
There is no way to alter discharge time (officially from DJI support).
I live in the tropics where its usually 30-35c in the daytime (more in the sun) and room temp is around 28c. That may have shortened the life span a bit but even so, 20 flights is pathetic!
I live in the tropics where its usually 30-35c in the daytime (more in the sun) and room temp is around 28c. That may have shortened the life span a bit but even so, 20 flights is pathetic!
Anybody using those LiPo safety bags?
I guess they're mostly for transporting on flights. They're suppose to contain lithium fires somewhat.
I guess they're mostly for transporting on flights. They're suppose to contain lithium fires somewhat.
I agree, I think you got shafted; I may have as well. I live in SE Asia, also quite hot here at times but I think within DJI's 'official' temp guidelines. Even so, the batteries are rated at 200 recharge cycles - anything below 50 is a real anomaly and disappointing. Either it's a bad batch or consistently warm ambient temperatures do in fact chew at the lifespan.
A hot car can easily surpass DJIs temperature guidelines for the batteries.
The issue a few of us have is the batteries seem to have issues *inside* those guidelines. The trend seems to be hot and humid significantly shortens the lifespan.
My mavic 1 batteries all swelled and became unusable after about 100 cycles each and 18 months use. My mavic 2s all did the same in under 20 cycles and 7 months.
The issue a few of us have is the batteries seem to have issues *inside* those guidelines. The trend seems to be hot and humid significantly shortens the lifespan.
My mavic 1 batteries all swelled and became unusable after about 100 cycles each and 18 months use. My mavic 2s all did the same in under 20 cycles and 7 months.
You should expect significantly reduced service life with higher temp usage. From memory 40deg C wipes 1/2 of the cycle count.
That doesn’t explain your scenario.
Are you sure they weren’t allowed to sit at very low SOC? That is one of the best ways to kill them..
An observation that must be made is that the problem you are describing seems rare.
I have killed many expensive battery by not giving them the care they need- the LiPo issues are not DJI specific. DJI doesn’t make the cells or battery.
Unfortunately I may have an answer.... (From another forum where I was posting my story):
Combust needs prerequisites: the fuel, the air, the ignite
for battery combust, the metal is fuel called lithium
Can u please explain the trigger called ignition?
Maybe it is factory defect? not spontaneous combust but instead a defect boundary breach occurring inside battery whose responsibility is separating charge stowed from annihilating itself to earth
Oxygen starve will cease lithium fuel furtherance rampant oxidation (fire)
There is a small hard to see "radio button" next to the line about being allowed to fly that you need to tick before you can hit Yes.
Lithium is not the fuel source when a LiION battery ignites- it is volatile hydrocarbons in the electrolyte. There is actually very little elemental Lithium in a LiION cell. Lithium metal batteries are a different story. The fact that water is recommend to extinguish LiPO fires suggests the chance of a lithium fueled fire isn’t considered.
The usual cause of a LiPO fire js extreme heat which most often originates from an internal or external short of a cell.
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Ignition can be from several sources but usually "internal". During mishandling or from a crash the battery can become damaged (inside the shell) or it could be punctured from something external.
Here's a video showing an intentional "puncture" causing the battery to self destruct:
Only way I found is short-charge battery to 50-60% or buy charger with storage mode - RCGeeks makes one Amazon.com: RCGEEK Compatible with DJI Mavic 2 Pro Charger Multi Charger Hub Intelligent Fast Charging 4 Batteries and 2 Remote Controller Compatible DJI Mavic 2 Pro Mavic 2 Zoom Battery: Toys & Games
for retiring batteries for the moment, can't it be manuvered into factory dormancy? its called hibernate
That's when the battery is under 10% and is not storage mode, merely the smart monitoring circuitry ceased to monitor the battery
so hibernate status destroys battery while brand new in the box sealed @10% charge level all cells??
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