Regarding the charging problem, do you have the latest firmware? as discussed by me here: [MyL5] Australia/New Zealand - #96 by irvinewade
To be careful, I will once again quote: IMPORTANT: The firmware is for the Evergreen and Dogwood batches. Don’t flash it to other devices.
I would probably get a ND myself if it came with a bigger screen. What is the screen diagonal and resolution of the one that you have?
It does sound as if the convergence is working quite well!