/e/installation on Samsung Tab6 lite Battery low

Hi everyone,
my friend make an installation on a tab6 lite and realized to late, that the battery is to low for /e/ installation. Now it came a flicker Screen on Download Mode (i think the accu is to low). In Download Mode there are red lettes with error messages and i am not sure, in witch step the battery of the device can be charged. Can someone help me out with an tip? I put the device on charger, but i think the device is not charging…
greetz
Stefan

Regain your privacy! Adopt /e/ the unGoogled mobile OS and online servicesphone

In TWRP mode, you can charge the device for sure,
with power off, you also can charge,
But in download mode i am not sure

Please take a photo