My new battery runs down quicker than the old one why? I have dji mini se smart batts

Probably you should post you inquiry in the Mini SE area, not in the one for Air 2S

Hi there. Thank you for reaching out and we're sorry for the trouble. Can you please tell us more about the issue with the said battery? Could you please confirm if the test is being conducted in the same location with the same flight environment? Please keep us posted. Thank you.

New batteries take a few cycles to reach their maximum flight time.

DJI Paladin Posted at 4-3 21:47
Hi there. Thank you for reaching out and we're sorry for the trouble. Can you please tell us more about the issue with the said battery? Could you please confirm if the test is being conducted in the same location with the same flight environment? Please keep us posted. Thank you.

Yes i am conducting it in the aame place it seems to rundown alot quicker than the older one

KLRSKIR Posted at 4-4 12:22
New batteries take a few cycles to reach their maximum flight time.

Oh i see so the more it get full cgarge the better it will hold charge ?

djiuser_P1Dh75uHgNxT Posted at 4-9 12:35
Yes i am conducting it in the aame place it seems to rundown alot quicker than the older one

Thank you for keeping us posted. We will coordinate this with our designated team for further clarification and will keep you posted once we have an update. Thank you for your patience and understanding.

I have found over the years that after about 5-10 full charge and discharge cycles a battery will provide its' maximum potential.