Victron Battery Indicator Eyelet M8:
The Battery Indicator Eyelet M8 is an accessory for the Blue Smart IP65 Chargers. After using the battery it takes about 30 minutes for the battery to regain its steady state condition and for the panel to show a correct status indication.
Green light: Battery does not need to be charged. Battery 80%-100%
Orange light: Battery can be charged. Battery 60%-80%
Red light: Battery needs charging. Battery 40%-60%
No light: charge immediately to prevent sulfation. Battery <40%
Manual:
https://www.victronenergy.com.au/upload/documents/Manual-Battery-indicator-panel-&-Indicator-Eyelet-EN-NL-FR-DE-IT-ES-SE-TR.pdf
