Questions about LILYGO®TTGO 1,54-inch wrist e-paper ESP32

zhum

I've buyed LILYGOTTGO 1,54-inch wrist e-paper ESP32 (https://aliexpress.ru/item/1005003095240476.html?spm=a2g39.orderlist.0.0.79404aa6XrTWd4).
I try to make a custom autonomous watch with periodical NTP correction via WIFI. Now I do disable WIFI and enable it for correction every 5 minutes, and do light sleep for 15 seconds between time checks.

I have some questions:

For 3-5 first display updates the time string is printed weakly, how can I fix it? I use the code from official sample.
Which batteries can I use with this module?
How can I check the battery charge level and charging status?
How can I turn off the red blinking led?
Is there any other recommendation for power-save?

Here is my code: https://github.com/zhum/lilygo-epaper-watch

Micky

For 3-5 first display updates the time string is printed weakly, how can I fix it? I use the code from official sample.
-> Refresh the area multiple times to deepen the color, or use full screen refresh.
Which batteries can I use with this module?
How can I check the battery charge level and charging status?
->The module is equipped with a 1.25 pitch battery interface, which can be powered by batteries
How can I turn off the red blinking led?
->The red LED is the battery indicator, flashes when there is no battery.
Is there any other recommendation for power-save?
->Hibernate enters deep sleep. The deep sleep power consumption reaches about 10uA