6 In 1 Air Quality Monitor Formaldehyde Detector Tester PM2.5 PM10 Detector. 18650 Battery Capacity Tester Internal Resistance Power Detector Auto Charging. - Super large input of up to DC 60V with Over-current， Over-volt and Short Circuit Protection, well protects the whole circuit, fits for most 12-24V Car Motorcycle ATV UTV RV Vehicles and Marine Boat.
eBay