I recently purchased a few of these to keep in my vehicles for quick monitoring of battery voltage. I highly recommend this item. Works great.

Just $5.66 shipped. Quantity 1

 

Yep, it was recommended in another thread some time ago. Bought one and keep it plugged into the outlet in the glove box.

 

Yep got one several years ago as my truck didn't have a volt gauge either. Ended up getting another one for the Jag and keep it plugged into the glove box socket too.

 

Thanks Richzak - just ordered one.

 

Neat little gadget…. going to get one!

 

Bought two of these this morning on Amazon.ca for $3.98 Cdn. each, which is about $2.75 US. Who would do without one at that price? Thanks for the heads up.

 

Got mine today. Went out and tried it immediately. It's a great useful gadget that works. Just plug it in and you get a voltage reading within a couple of seconds. Thanks again richzak.

 

I've been using one for about 12 months now, seems fairly accurate.
When the battery gets a bit low it shows 12.2v, after an overnight run on the battery tender it shows 12.6v. Start the car up and it jumps to 14.2v

 

If the buyer does not mind waiting a few weeks to receive the item as in post #1, you can buy these on eBay for as low as $1.65 each with free shipping.

I view this a must have for all cars, so cheap, you can leave in each car(s) glove box.

Auto LED Cigarette Lighter Voltage Digital Panel Meter Voltmeter Monitor Car D0 | eBay

I have one in each of my vehicles.

Amazon costs more but gets to the buyer faster.