- Oct 31, 2018
- Reaction score
I think the point of the bags and ammo cans is to contain the heat and flames not the gases.A couple of things. As far as the heat being auto discharge I have never known a battery to come out of the package with more than storage charge and I am talking about hundreds of batteries I have bought for rc planes and heli’s. So I doubt the battery was shipped with enough charge in it to cause it to go into auto discharge
As far as liability as an attorney I think you would be liable if you shipped such a battery even if DJI asked you to unless you discharged it nearly completely.
I do put old lipos in salt water to discharge them before disposal but I am guessing that in this case DJI would decline to replace the battery and point to the salt on the battery as evidence that it’s your fault not theirs. However you may want to contact DJI again and tell them of your concerns about shipping a defective battery and ask them what they want you to do and tell them one option is the saltwater discharge method.
As far as the idea of them sending you a lipo storage bag for shipping. First I would be amazed if they did that. And second I don’t trust those bags. If you watch some YouTube videos about lipo fires you will see that the larger mAh batteries (which would include DJI batteries) vent a tremendous amount of burning gas when they catch fire. No bag is going to contain that. I know a young guy who was charging a lipo in a bag in his bedroom unattended (not a good dea) and it caught fire and burned down the top floor of his family’s home.
Ditto for ammo boxes. I know they are popular for lipo transportation and storage but if a lipo catches fire (unlikely perhaps but not impossible) the burning gases will find a way to vent.
When I charge larger batteries I charge them outside or in my garage on concrete in a charging device I bought called a BatSafe which has baffles to vent the gases but will not let flames escape. They are about 50-60 bucks which is not cheap but still cheaper than a fire. They seem to be well engineered. But then a lot of this is somewhat off topic to the original post
Also you are required in the USA to tell the shipper that you are shipping LiPo batteries and they will not ship it via air.
Think about the thousands of LiPos right now that are in transit. When I worked at Amazon there was a whole class dedicated to LiPo safety since we shipped thousands of them per day.