12 volt battery box. Volt meter illuminates between usb plugs

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Spec: Item Type: Marine Battery Box Material: ABS 1. Digital voltmeter 2. Switch 3. Dual port USB (5V, 2.1A/1A) 4. Power socket (12V) 5. Solar

Marine Battery Box, Dual USB Socket 12V Quick Connect Voltage Indicator Smart Motor Battery Power Center for RV SUV ATV

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Portable 12v Power Box - DIY Astronomer - Stargazers Lounge

Dual USB charge ports with 12VDC voltmeter. 4.2A total for fast charge. Universal for any 12-volt project. Easily fits in dash panels. Similar in size

Voltmeter USB Charger Dual Ports for Auto or Marine