12V 24V 36V 48V Battery Meter, Battery Capacity Voltage Indicator, Lead-Acid & Lithium ion Battery Charge Discharge Monitor, for Motorcycle Car Truck Vehicle Marine Boat Golf Cart Club Car Forklift

This little battery meter reader works!!! You have to install directly to the battery, or no relay or step up converter in between to accurate read the voltage and percentage. I have experimented, and it proves it is working. I tried the programming from the back of the reset button, but nothing responding. I guess this reader automatically reads 12V SLA battery. I tried to read my car's USB charger, and it accurately shows 5.2v with 0 percentage. Of course, it cannot read through it, because an USB port is stepping down to 5.2v. The only problem is that the ad shows 2 meter readers, but the description indicates only one. I received only one reader, but my fault I didn't read the bottom description.

Came with instructions, and although they are in English, they are definitely written by someone that does not speak English as their first language. Even still, the programming went according to the instructions. The install was straightforward. Wiring it up is NOT in the instructions but that wasn’t hard. Just follow the charge leads and wires negative to negative and positive to positive. (See my pics). Once wiring was ran, I had the meter hooked up, programmed, and installed in 30 minutes.I’ll revisit this review after about 6 months of use for any updates to performance/reliability.

Install was easy, ESL (english second language) instructions, so a little hard to grasp but read it several times for the full effect before install. It is about .4 amps off, which isn't really bad since the reading is on the gauge is on the low side, compared to my meter. Example: shows 37.4 on gauge, my multimeter shows 37.8 sooo its kind of a built in safety factor. This was installed on my 1980 club car caroche 36v.

I purchased this for an electric scooter because the throttle/display I retrofitted was for a 48v & my setup is 36v. It is very bright, easy enough to setup & mount. Only issue is the way to setup the number of batteries goes by preset increments of two I believe. I have an odd number of batteries & while the voltage reading is accurate, the percentage is off because of the battery assignment. It's ok for me, but the kids only know the percentage, so they don't know when the scooter is low.Otherwise it works fine, I am happy enough with it.

I installed on my lifepo4 4 battery in my kayak.You need one of these to show how much life you have in your battery.You can't go by voltage on a lithium battery.I highly recommend this item.

Very nice, compact voltage meter. Once it's set up it's super easy to operate, but, READ THE INSTRUCTIONS!!!! They will show you how to set up the gauge initially for what you want to see, how much power and type of battery you're looking at. After that's done, it's one button. Display is bright and sensor is accurate, at least as near as I could tell with a multimeter.

Received but screen just flashed. I followed all the steps in the instructions but does not work.

Got my unit flush mounted on my 48v golf cart body. Very easy to read but instructions are a little vague. Sketch of unit is different but seller responded with better instructions. Holding the set button on the back of the unit as power plug was inserted allowed me to enter setup and select P for lead acid and 4 for 48v, even though I have 6 8v batteries, the unit is for 12v thus 4x12 for a 48v cart.Very happy now and I changed my rating to 5 stars!