Simple POV Display using APA102 RGB LED STRIP and Arduino NANO - YouTube
OPEN SAMRT Battery Style Digital Tube LED Battery Level Display Module 4 color 10 segment LED Bar for Arduino|bar led|bar barbar led display - AliExpress
Charge Level Blue LED Indicator Voltmeter Stable Fit for 24V Lead-acid Battery | eBay
I have built a battery level indicator and have tested with a 12V battery Would it harm my arduino board if I connect a 48V battery? - Arduino Stack Exchange
Battery Style Digital Tube LED Battery Level Display Module 4-color 10-segment LED Bar for Arduino COM53 , R23 - Faranux Electronics