IPX7 Waterproof Battery Monitor with Bracket 7-100V,12v 24v 36v 48v 60v 72v Digital Display Battery Capacity Remaining Capacity Percentage Tester with Buzzer Alarm and Temperature

Bought this to monitor the voltage on my 24V trolling motor system real-time. I set it up according to the the directions... Mode1: P 24 (lead acid 24V), Mode2: Off (No time-out on display), Mode3: 21.6, 25.7 (0%, 100% SoC), Mode4: 22.0 (low voltage alarm), Mode5: 30 (did not change), Mode6: Off (no temperature display), Mode7: 29.3 (High voltage alarm). It works exactly as stated. Note there is a small amount of error in the voltage reading verses my $300 Innova meter, but it's pretty insignificant. A few noteworthy items: 1) This predicts battery state of charge (SoC) purely as a function of voltage. It uses a linear scale with the voltages setup in mode3. 0% at the low voltage and 100% at the high voltage. Unfortunately lead acid battery SoC curves aren't really linear vs voltage, but it gives you an idea of where you are at. Also as the voltage fluctuates with device loads, the SoC reading will fluctuate right along with it. For me it's not a problem, I only really pay any attention to the SoC% (and the Voltage readings for that matter) after a settling period with the trolling motor not being used. 2) The device uses power even when the display is off. With the display on and the light on, the unit consumes ~9mA, with the display & light off it consumes ~1mA. This might not be a problem depending on your application, but I store this boat over the winter and don't want any additional parasitic loads or to have to disconnect the batteries every time, so I installed a water proof switch inline with this device to truly shut it down when my boat is not in use. 3) The display is quite small. I've not used it on the boat yet, so I can't comment on how easy it is to read mounted 6 ft away (near my feet) in bright sun light. I'll update this later. Update: Installed on the boat and can easily be read from 5-6ft away in most lighting conditions. Note that the glare of the full sun can make any display hard to read. 4) The alarm can be silenced by pressing the mode button for less than 1 second. 5) The temperature display is only available in Degrees C. I live in the US and prefer Degrees F. I shut off this temperature display, because with my 24V system and the temperatures I mainly use the boat (20-30C) combined with the small display size, I'm concerned it could easily be confused with the Voltage reading. How water proof is it? Time will tell! It will get a full test mounted near the bow of my boat. I'll update this review if the unit fails due to water intrusion. I like the fact that it can be set up for different types of batteries. I plan to upgrade my boat in the future to LiFeP04 batteries and will only have to make a small configuration change to this unit.

I couldn't recommend more. The screen is bright looks really cool, and not too cheap, the only thing you have to do is figure out how you want to mount it. But for this product it's a great deal

At first I had trouble setting up this battery monitor because I couldn't find the number of strings for my LiFeP04 batteries. Without this information it will give you the voltage reading but will just always show 100% charge. I finally found the correct number of strings for my batteries, and this meter works fine. It is very bright, even on a sunny day. It seems very accurate. The instructions are complete, and needs to be followed one step at a time.

Product was packaged and delivered as usual, it was easy to install and works as advertised, the on con would be that it's led display could be brighter for daytime use.

I bought this device for my Yamaha golf cart. This device works great, but ONLY IF YOU SET IT UP CORRECTLY. The device can only be as smart as you allow it to be. I didn’t have mine set properly at first and I thought, “what a piece of junk”. Once I did some research to understand why I could not get a proper reading, I then set it up accordingly and now it works perfectly. These are my battery meter settings: Mode 1: P-48 - Mine are 8volt lead-acid batteries and I have 6 of them, so 8volt batteries x 6 batteries = 48volts. Mode 2: off Mode 3: (42.0 = dead range) – (52.0 = full range) - I called the manufacture of my batteries to ask about the 48v battery pack voltage levels when dead and at full. You can also find this info online for the battery pack that you have. Remember, mine is a 48volt battery pack. When the golf cart is in use the battery percentage and voltage will fluctuate so it is best to get a reading when the golf cart is at rest. Mode 4: off - You could set this based on info online or you could just turn this off because it is not critical to the operation of the device. Mode 5: use default setting the device comes with. Mode 6: off - You could set this based on info online or you could just turn this off because it is not critical to the operation of the device. Mode 7: off - You could set this based on info online or you could just turn this off because it is not critical to the operation of the device.

A bit tricky to program, still not sure i got it right. Seems to be working. Nice display. One thing I really don't like the wires are or seem to be Aluminum not copper. They are very brittle do not twist together, super thin. I would replace them with real wire but you can't. I was going to buy the up graded one (same price) for a bigger battery, but I really hate aluminum wire. Buying a more expensive one for the 100Ah set up. I'll continue to use this one on the 15Ah battery. It has memory which is good and the reason I bought it in the first place

Very small. Short connection wires. Not clear how to program and it provides false information if not perfectly programmed. I did not spend a lot on this but will have to go back and get a real battery monitor that works with a lithium marine battery.

nice little battery monitor! push of a button it tells me what i want to know.