12V 24V 36V 48V Battery Capacity Indicator Golf Cart Voltage Meter with LCD Display Green Backlight, Waterproof Monitor Gauge Digital Voltmeter Testers for 3S-26S Lithium Battery&Lead-Acid Batteries

If you have lithium battery s this is a Great charger it does everything on its own from restarting the lithium battery and charging on its own

Looked nice and good quality but didn’t use it due to wiring harness conflicts. Great product though

Instructions are rather cryptic.1. Get into 'Program battery mode' by holding 'settings' button (left button) as you provide power to the device. Won't work if the device is already powered on.2. Use. 'settings' button (left button) to toggle through battery types. I selected 'F' for LiFeP.3. Press 'function' button (right button) to select number of in-series cells. 'Function' button will increase count. 'Settings' button will decrease count. I used '4' for my 12v battery.4. Press AND HOLD the 'function' button (right button) to get into the 'Program Settings' menu. This allows you to turn backlight on or off, for example. The 'settings' button (left button) will select the function (Voltage/Pct toggle, Backlight, Auto-off) and 'function' button will toggle each setting to be on/off. I set both 'S1' (Voltage/Pct toggle) and 'S3' (backlight) to be 'on'.5. Wait for menu entry mode to time-out when you are done making your selections.

Does what advertised.

These don't seem to work. It will say 100% until my battery dies. Also, it's difficult to attach to the terminals. Waste of money.

Meter works good - Instructions are like reading Japanese- Sleep mode don't work had to put a switch in to shut it off when I'm not using cart. after several wiring changes- and going direct to battery with both wires- it isn't accurate- thank God the lithium battery has a Bluetooth connection to my cell phone- There is about a 25% difference between the 2- I trust the Bluetooth

Easy to install and works great

Works as it should. Takes a bit of effort to get it programmed. The instructions are translated from Chinese? so you have to interpret a little. The bars in the “battery” indicate which functions are active.