What's the maximum capacity of MicroSD his drone scan support?

256 GB is the correct answer. You do need a fast transfer rate to smoothly transfer at 4K. One of the most reliable Micro SD cards for drones with plenty of speed is the SanDisk Extreme Pro Micro SDXC UHS-1 U3 A2 V30 Memory Card. It has a 4.8 rating and cost about $56.

If I do the math right, the mini combo w/ a extra batteries is actually more expensive than buying the Mini plus separate batteries. Comments?

Not exactly. Unless there’s a sale I’m unaware of, the MSRP on the Mini 2 by itself is $450 which includes one battery. The fly more combo includes 2 additional batteries which are $53 each. So a total of $556. The fly more combo is $600. So just buying the drone and 2 extra batteries would technically be cheaper. What’s also included is the charging bay which holds all three batteries. Which is worth the extra $44 itself (but it can buy bought online for about $35). Otherwise you have to plug the drone in every time you want to charge a battery and to charge all three, you’d have to swap each battery out and charge them one by one. The combo also includes 3 sets of propellers (which aren’t really expensive and you may never need them) and I don’t believe buying the drone by itself includes the carry case, which comes with the fly more combo. You could say that’s worth $15-$20. Which you’ll definitely want to hold everything and protect it. So if you have a case already and don’t want extra propellers, you’d maybe save money buying everything separately. But trust me, you’ll want the charging bay. The batteries run down quickly and take a while to charge. And without it, you can’t charge the other batteries while using the drone.

Can this drone fly a pre-planned grid pattern automatically over a 40 acre parcel of land?

DJI Mini 2 can perform the following pre-planned flights: Helix, Dronie, Circle, Rocket

what drone is comparable to this without geo zones?

The Autel Nano + is roughly equivalent to the DJI Mini 3 Pro. It is more advanced than the Mini 2, Mini 1, or Mini SE, just like the Mini 3 Pro. It has obstacle avoidance, and a camera which is equivalent to the Mini 3 Pro. Autel drones are widely used by first responders doing Search and Rescue missions, precisely because they do not have to waste time on geo-unlocking as they would have to on a DJI drone, when time is crucial for a rescue mission.

ASIN	B0BL3T49JF
Age Range (Description)	Adult
Age Range Description	Adult
Amazon Bestseller	#6,433 in Toys & Games ( See Top 100 in Toys & Games ) #18 in Hobby RC Quadcopters & Multirotors
Are batteries included?	Yes
Battery Cell Composition	Lithium Ion
Brand	DJI
Brand Name	DJI
Color	gray
Connectivity Technology	Wi-Fi
Control Type	Remote Control
Country of Origin	China
Customer Reviews	4.6 out of 5 stars 1,643 Your Review
Effective Still Resolution	48 MP
Global Trade Identification Number	06941565949417
Included Components	DJI Mini 31, DJI RC-N1 RC Cable (Lightning Connector) 1, DJI RC-N1 RC Cable (Standard Type Micro-USB Connector) 1, DJI RC-N1 RC Cable (USB Type-C Connector) 1, DJI RC-N1 Transmitter *1
Includes Rechargeable Battery	Yes
Includes Remote?	Yes
Item Dimensions L x W x H	36.2L x 7.2W x 25.1H cm
Item Weight	248 Grams
Manufacturer	DJI
Material	Plastic
Maximum Range	10 Kilometers
Media Type	Micro SD
Model Number	MT3PD
Optical Sensor Technology	CMOS
Part Number	MT3PD
Skill Level	Beginner
Special Feature	4K HDR Video Portrait Shooting, Intelligent Function, Lightweight, Long Battery Life, Recommended camera drone for beginners Special Feature 4K HDR Video Portrait Shooting, Intelligent Function, Lightweight, Long Battery Life, Recommended camera drone for beginners See more
Special Features	4K HDR Video Portrait Shooting, Intelligent Function, Lightweight, Long Battery Life, Recommended camera drone for beginners
Video Capture Format	MP4
Video Capture Resolution	4K
Warranty Description	1 year manufacturer warranty
Wireless Communication Technology	Wi-Fi

DJI Mini 3 (N1 Transmitter Included) Camera Drone, Shooting, Small, Remote ID Compatible, 4K HDR Video Recording, 38 Minutes Flight Time, Vertical Shooting, Intelligent Function, Foldable, Lightweight

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