I've had my Tello Boost Combo for about 3 weeks now. I've been using the paid version of Tello FPV, it's fantastic. It reminds me of DJI Go 4 for my Maivic Pro. On the recommendations of posters on here, I purchased a PIX-LINK WiFi Range Extender and a GameSir T1s Controller, I prefer physical joysticks. Now I'm looking for a Power Bank for the Range Extender. I'm looking for something that isn't too expensive. I was originally looking at one with 2 outputs. One for the Range Extender and the other to power the Tello Battery Charger, if needed. But those are a little more than I wanted to spend. Any recommendations? I saw this one, any opinions on it? Thanks for any input.