I have just been on to DJI about my Mini 3 plus battery as one tab has broken and the other is cracked
But once they saw the serial number sadly they couldn’t cover it under warranty as it was purchased in China 
This was bought from Ali-Express
It is quite a common problem unfortunately. Eventually I had to buy some new batteries. A major design flaw
I wont be doing that, but a new case 
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How about one of these …
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Or you could have this one which is a bit cheaper and “Genuine plastic” (none of that crappy artificial plastic here)
https://www.aliexpress.com/item/1005005473531158.html
Weighs 5G, so wouldn’t that push it over 249G which would be a disadvantage for many?
I think the casing is polystyrene, so you might fix it by applying a tiny drop of the solvent MEK (Liquid Poly) into the crack and then propping it firmly in place to set. Maybe open the case and put a tiny block of EPS (or anything firmly spongy) under the catch to restore springiness.
As for the battery clip, (I advise against law-breaking, but for a couple of grams) has anyone ever been challenged by police to prove the weight of their drone ?
Will any drone pilot ever be prosecuted for being 3 grams overweight ?
In circumstances where the weight is not critical, these skids also grip the battery and hold it in very tightly: (you have to remove the skids to get the battery out)
Strictly speaking - you are absolutely correct. However, in the real world, I cannot see a police officer requesting you to land so he/she could weigh your drone 
Any item you add to the DJI Mini series is likely to put it over the 249g limit - even strobe lights which many use for safety and VLOS reasons. Having said that, I am not condoning that anybody should break the rules.
For myself it would be no problem as I have an A2 CofC which allows me to fly drone up to 500g under similar conditions. The clip was suggested to Wayne as a temporary measure until the the permanent fix - new external case - was received from Aliexpress in China
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It is a Plus battery so already over 250g
It is not breaking the law to be over 250g
No never, nor do they carry calibrated scales
Cheers John, but I will wait for the new shell to arrive
My point here was to highlight the fact, if you buy genuine DJI products from the likes of Ali-Express they are not covered by DJI’s warranty
Good job, or I’d of been arrested long ago! My wing was 1.2kg 
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The new shell arrived from Ali-Express and I would say it’s a genuine one
Bonus point it says ultra-light 249g 
It actually arrived assembled and it was fun getting it apart
But at least I know how to disassemble the old one
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not an easy job as DJI glues the seams with a silicon-like glue
