See installation instructions.
Generate a random API token: hexdump -n 64 -e '16/4 "%08x" 1 "\n"' /dev/random.
Run using charged --API-TOKEN=....
To run as a service, create a user charge and put a .env file in /home/charge:
API_TOKEN=...Copy lightning-charge.service to /lib/systemd/system, enable and start the service:
systemctl enable lightning-charge.service
systemctl start lightning-charge.service