[Bking60]

Easily check system voltage and alternator output without putting wear and tear on the small hood cable.

I bought two of these, both worked but had to send one back due to being off .2 of a volt. They quickly sent me another one via amazon return process.

I used a bench power supply to verify the accuracy since the accessory socket may be .1 lower than the actual battery bus.

Must remove this when parking overnight, it pulls 46ma. Some cars may power off the socket but mine does not.

When the voltage reads 12.2 and not planning to drive it within two days you need to charge it.

The display is clear but pic is not.

Search amazon for [Pure Copper] USB C Car Charger, SUPERONE 45W Dual USB Charger

This one is metal and can handle the heat if used for charging devices.