Powering T-Beam with 5V solar panel or external power bank

[kilroy]

once again, spending 30 on powerbank, another 50 on solar.
you would be much cheaper and more easy and smaller with a RAK wireless / or T-echo device, consuming about 1/10 of the energy than an esp32
you spend 20 more for the device, but it will run endlessly with a simple 18650 or pouch Lion battery and 1 Watt solar. the rak device even has its own solar controller (solar maximum 5V!)

have a look at this: this is solar panel and battery in the box already for less then 10€ you just need to get a Rak wireless device.

Cheap and easy construction of solar-repeater

I checked the mAh of the included 18650 battery . the Battery inside the solar box delivered 1250mAh down to 3,7V. so it can be replaced by a 3500mAh if you like, but it is not really necessary. i should last a good 4 days with no sunshine. if replaced by a 3500, that should be about 10-12 Days. so it depends on the situation of installation, if you expect some 3 weeks of darkness, it is also an option to put two 3500mAh inside… if there is not so much darkness in winter, the included ba…