Finally I found time to upgrade my battery box with some awesome upgrades you suggested. Thank you to everyone for leaving comments and suggestions on how to make this battery built better.

The box has now an integrated charger port for the e-bike charger which makes it a lot easier to charge the battery with the external charger. I usually don't need to charge it externally but just in case... I can just plug in and start charging.
You also had the brilliant idea to install a pre-charge button for the capacitors of the inverter and solar charge controller. So I did and it works fabulous. Just hold the button for 2-3s and turn the main switch. AMAZING!

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