PA013 SAE to Dual USB port adapter and Voltmeter – Rocky Creek Designs US

Hook the charger up to your battery and you have two USB charging ports AND a voltmeter. Comes with a 1m long SAE to SAE lead and a mirror mount. The charger outputs a total of 5V/4.8A to two USB ports. When the adapter is plugged in and powered ON, it will display the voltage of your battery. The USB charging ports

Dual USB Kit USB Adapter with Voltmeter, Waterproof Square Head Dual USB Phone Fast Charging QC3.0 Off Switch LED Digital Display Voltme (Red) : Cell Phones & Accessories

Motorcycle Dual USB SAE to USB Adapter with Waterproof Cover Switch Fast Charging Built in Voltmeter for Phone Tablet : Automotive

Motorcycle USB Adapter - SAE to USB Adapter Motorcycle Fast Charger - Quick Disconnect Plug - Quick Charge 3.0 Dual USB Ports to Charge 2 Devices - Powers Cell Phones, Tablets, GPS - 2 Year Guarantee : Automotive