AILI Battery Monitor with Shunt, 8-120V up to 500A Voltage Current Meter, State of Charge Display up to 999AH, Compatible with LiFePO4 Lithium AGM Gel – for RV Camper Caravan Boat Solar Off-Grid

Worked perfectly right out of the box. Nice heavy duty acrylic base and super heavy hardware. Simple operation is refreshing in this overly gimmicky app-inundated world we live in. Some other manufacturers could take notes from this monitor! Others have said there is no way to secure it into your cutout if you can’t access the back. I can confirm that. However , a 2 1/8” hole saw produces a perfect fit in plywood. I didn’t need it but one could add a single layer of electrical tape around the perimeter for a super snug fit. Yes, cord is too short. Ended up being just enough for my application. You can extend it without too much trouble. It’s a standard 5 pin JST-XH. Battery sampling wire I used was 18awg. The screw terminals on top of the unit worked great. Philips, very small. Consider tinning the end of your wire and then smashing it flat and trimming it square for a good connection. 18 gauge is probably about as big as it will accept. Even the backlight is great. When the backlight is turned off the screen still glows ever so slightly so you can read it. Perfect for nighttime in the woods. The screen is quite shiny so consider glare from windows when installing. The accuracy of any monitor depends on your configuration! For my one year old AGMs I used 50% of the rated capacity and charged them up fully with a good 3 stage charger before connecting this monitor. Then set the current SOC to 100 and forgot about it. I set zero % SOC voltage to 10.1. Have a couple weeks camping in the RV so far with good results.

I installed this meter in my DIY portable solar generator that I recently retrofitted with four 3.2V 280Ah prismatic LiFePo4 cells after many years of using AGM batteries. Neither the solar charge controller or my simple voltmeter were able to measure amps in and out to provide an accurate indication of state of charge for the LiFePo4 battery. This current meter was easy to install, and if you follow the directions carefully, is easy to calibrate to the specific capacity of your battery. While it lacks Bluetooth connectivity, it is offered at a price point that makes it an exceptional bargain. The shunt is well made and appears to be of durable construction (I chose the 350A version). The meter is flush mounted and of very low profile. The function buttons work reliably and while the display options are quite simple, the information displayed is critical for clearly and accurately presenting the battery's state of charge, which is calculated as a value of remaining amp hours and as a percentage of total capacity.

simple tool to help monitor battery health. it gives discharging OR charging status, one or the other, not both at once. in the end, total Ah discharged is our main focus so we can learn our overnight consumption. have 2 200ah lifepo4 batteries from amperetime. easiest to set meter when batteries are new and fully charged for accurate display. as they age, resetting Ah capacity will be necessary to stay in ballpark of actual Ah capacity but that is to be expected of most basic battery monitors. the trickest part to get Ah IN from solar charge controller as well as see Ah OUT of the battery bank was to put the SCC and inveter cables for the negative side on the P- end of the shunt and NOT use a hopper from P- to the copper bus bar amperetime recommended when we paralleled our batteries. our battery negative cables are on the negative bar and all positive cables (SCC, Inverter and 2 battery lines) are on the postive bar but the meter would not count properly when SCC and inverter were on the neg bus bar. whatever...it works great now and we are pleased with our purchase. BTW, we use a victron 30a AC charger as a back up for when solar may not fully charge our batteries. in order to know exactly how many AH our 3 wk old batteries had, we discharged the bank to below 11v, (which was okayed by amperetime for testing purposes only), then one by one, we recharged with the victron to see actual Ah input to the batteries for accurate Ah capacity. after resting 12 hrs and good, close voltage we reconnected the pair in parallel and all has been working well to power overnight electric requirements and get fully charged by solar of the 40% discharged by mid day on roughly 220w max of solar charging by our renogy roverli40amp mppt charger.

I currently run a small solar setup to keep my battery charged in my RV. My problem was that I found that I could not judge how much juice my battery had left, simply by the voltage alone. I needed a meter to give me a better idea as to the status of my battery. Solution- I purchased this meter! I installed this meter rather easily. Directions were pretty straight forward. This meter offers most options offered in units three times the price. Accuracy seems to be spot on, well within the advertised accuracy. Setup was fairly easy. I read some of the reiews, and after making the purchase I'd advise the following: Do your research when it comes to these meters. Know and understand what you expect these meters to accomplish. If you are looking for a meter to give you a reasonably accurate real time display of your battery consumption or charge you won't go wrong here. This meter falls short, in of all things, final installation/ mounting. The meter is 54 mm in diameter. The face is 59 mm in diameter. To install this in a wall you aren't allowed much of a "fudge factor" (5 mm) when it comes to cutting your hole. I made a template, actually making it slightly smaller than 54mm, taking into consideration that once you draw around the template you will get the 54mm and caulked it in place. Nonetheless, a good value.

I followed the directions, and also watched a couple you tube videos to make sure I did it right. It works very well, and it is really a plus to be able to see the exact percentage left on your batteries. I thought at first that I didn't need this, but realized that simply checking the voltage of a lithium battery will not give you any precise idea of how much life is actually left. It also helps when monitoring the charging process. Looks like I am going to need more solar panels.

Works well, easy to install and having an extension cable for the display included is very handy. Provides more useful information than a simple volt meter, allowing you to understand what's actually going on with your battery system. Great for checking solar input

Eu gostei porque fico a saber o consumo imediato, mas temos que fazer reset constante. porque ele não aumenta conforme a entrada de corrente

I installed two of these on my Boat a few years ago to monitor House and Thruster Batteries. They work great.

Well made, easy to install and set up. I installed the monitor to be able to monitor new 120ah battery installed under the bonnet of my LC200 Landcruiser, working great. Would have liked the item to come with a temperature sensor (can be ordered seperatly). Blue tooth could be stronger only good for a few meters.

I have researched and read reviews on different meters for lithium battery, come to the conclusion one must consists of a shunt to more accurately measure the capacity of a lithium battery, as most common voltmeters are only good for flood acid and AGM batteries. This budget-value meter gives me the ability to monitor my portable camping lithium battery box, as the built-in voltmeter on the battery is useless.