I had a crash and one of the motor screws is missing.  The other 2 were loose but tightening them up allowed me to fly with no issues.  I want to replace the missing screw but can't locate the size.
Also, does leaving the batteries on a charger hurt them?  I use the drone for work and sometimes have unplanned missions where I need 4+ batteries available.

Hi there. Thank you for reaching out. Can you please take a picture of the said motor with the missing screw so we can provide you with an accurate resolution? Also, it is fine to leave the battery on the charger after fully charging it as the Intelligent flight battery has overcharging protection feature. However, we do not recommend placing the battery on the charger every time to avoid future issues. Please keep us posted. Thank you.  

Here's the pic

You can take off one and head out to hardware store and get one. I think they’re m2 or m3 not sure.

djiuser_osCcy3ZjjsoP Posted at 3-22 05:16
Here's the pic

Thanks for your response. We'll forward this to our designated team for confirmation. We'll keep you posted.

Hi there. To give you an update, the model is M2.0, which is used with the H1.5 internal hexagonal wrench. We hope this helps!

fans17c4995b Posted at 3-22 14:31
You can take off one and head out to hardware store and get one. I think they’re m2 or m3 not sure.

They're M2