DROKBattery Monitor 12V, 10-100V LCD Display Volt Meter Battery Capacity Tester Temperature Gauge for RV Marine

Great little device, I use it to monitor a power wheels I converted to use Dewalt batteries

Exactly what I needed

FYI for anyone seeing this if you have a Samsung SDI its not lithium its a lithium Phosphate and its 14 cell. I had it set to just lithium and it read 100% battery until it was dead. Luckily i was near home. After now figuring it out its pretty simple but the first time you use it its pretty complicated being it can be used on so many different applications. Overall though good quality especially for less than $20, Voltage matched closely to a voltmeter, Display is easy to read.

Product as described

The meter seems to work, I can't speak for the accuracy of the voltage as it fluctuates a lot. It was reading at 48% and after I drove it around for about 20 minutes it started 52%, but I like the fact that it displays the actual voltage instead of just a battery icon with bars.I couldn't mount it where my old on was mounted, this one is bigger so I need to cut a bigger hole.My biggest complaint is that the wires are super thin! I didn't know they made wires that think. Id say probably 26 or 28 gauge. I was afraid to touch them.The screen is also not very bright. It's hard to read in the sunlight.Pros:-Voltage display along with percentage-temperature display-on/off button-priceCons:- Wire size. Id like to have seen 18 or at least 22 gauge wire. This wire seems very thin- Display is hard to read in the sunlight

Came quickly and just what I ordered ! Very pleased

After calibration was done it worked great.

Works as designed. Small as noted in other reviews. Must have the ground/neg wire measuring across all the batteries.