Equus 3721 Battery and Charging System Monitor

I LOVE this thing. It works perfectly, and is very easy to use. I've already ordered a new battery, because I can tell from a simple check that my current one doesn't have too much life left in it. I suspected as much, and that is why I ordered it in the first place. Very easy to read and use.

i bought this october 10 2008 and it works good to me shows were and how my volts is at on my battery, i can see the drain if i turn on the radio and not the engine and how volts goes up when engine is running higher RPM. volts is how fast electrons moving per second and amps is how much of a punch is coming.

Works good and the led light helps alot. Hesitant to give it a 5 star rating because of some of the previous reviews so yea.

I have a similar device that has an analog display (a needle indicator) but decided I wanted one with a digital voltage readout so I bought one of these. I'm very pleased with it.

The shipping cost was doubled after I ordered this item. I will not order any products from this vendor again.