Buy ZEEY 70cm Micro USB Battery Charging Cable for DJI Tello/Tello EDU Drone Fast Charger Adapter Lead Cord, Compatiable for Charger Plugs with USB Interface: Battery Chargers - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
Then I added this three battery charger. It charges all three simultaneously, has its own built-in power supply so you can charge it up and use it on the go, and has a USB A slot so it can be used as a power brick to run the Xaomi 2 repeater or top up the charge on your phone:
Amazon.com: Smatree Portable Charging Station Compatible with DJI Tello Battery, Simultaneously Charge 3 Batteries: Camera & Photo
I really like the Smatree! It works great, fits perfectly into a slot in the case I carry all my Tello stuff in, and I can leave three batteries in it without it bleeding off the charge... I've tested that. BTW, after it charges all the batteries it will also turn itself off after a certain time-out... I don't know what that time is, haven't watched it long enough to check that.
I've had a Xiaomi 2 since December 2018 and it still works fine. I just got another one that came with a second-hand Tello I bought last week. The 'package deal' came with a Tello, Mi extender, and a small power brick... all in like-new condition.
There is another extender with two antennas that some people here use but I don't know the name of it right off. You can search this site to find out.
The Mi 2 is a pita to set up and some people have major problems at first getting it to work... you have to install the Mi Home app (and some think it's a 'spy' app), give an email address, and let it access your location.
To set both of them up, I used an old phone that otherwise stays turned off most of the time, and does not have an active SIM card in it... just connected it to my main phone's hotspot. I also have a 'dummy' Gmail account that I use for any questionable purposes.
Some people have reported that the Mi 2 will sometimes lose connection and have to be reprogrammed again, but that hasn't happened to me.
Amazon.com: NETGEAR WiFi Range Extender EX3700 - Coverage up to 1000 sq.ft. and 15 devices with AC750 Dual Band Wireless Signal Booster & Repeater (up to 750Mbps speed), and Compact Wall Plug Design: Computers & Accessories
Okay. So I looked up “Wi-Fi extender USB 1200 mbps” and it gave me a wide range of choices. The only problem is, I’m not sure which one to go with. I don’t know where you would hook it in. That would be where I need you; which of these seem good?