Bxlive 20V 6.0Ah! High-Output 20-Volt Tools 206 204 203 201 200 181 180, DCD DCF DCG DCS Series 20V

After fully charging them once, my batteries will no longer charge. Has this happened to anyone else? Suggestions? I have tried multiple chargers.

airlines require 100 watts of less how many watts are these batteries?

Does it work with a 12v/20v max lithium-ion dcb101 charger? i put it in, and it's not charging, so i'm concerned