AiLi Battery Monitor DC 300V 100A Voltmeter Ammeter Voltage Amp Meter Gauge with Hall Effect Sensor Transformer

I have installed this product in my motorhome battery box. I require to know the load I am taking from my leisure battery when I don’t have a 240VAC hookup. I have solar panels fitted but this meter does not show the charge rate as that information is available on the controller inside the van. The hall sensor seems to work ok even though I’m at a very low end of the capacity of the meter, 100amps max. The max load I will take is about 10amps and that includes the water pump running intermittently. The pump takes about 3amps. The normal loading during the evening when you require led lights, tv, gas heater fan, if cold will not exceed 10amps I hope. Trials still to be carried out. It would have been preferable to fit the meter inside the van to view the load real time, however it is not possible as I have no spare space to mount the instrument. At least I know now which lights not to use to keep the load down. I haven’t taken into account iPad, iPhone charging at present. I am looking at a separate solar charge system to take care of that aspect. The instruction leaflet is basic, but the price of £32 is ok as far as I’m concerned. An instrument with a shunt might be more accurate but I could not fit one due to the size of my installation. There is more info on the meter than I personally require, all I really wanted was the load taken, a bonus is when the system is switched off when motoring the meter will show the charge amperage back to the battery. The meter is live all the time as it is directly connected to the battery, no switch facility, the load to power the meter is negligible, there is a back light function if it is dark. All in all it would appear to be satisfactory, time will tell. If tried to post a photo but it won’t work!!

Really easy to install. Having some issues with the connection between the reader and reading device. Seems to be working again now, but if it plays up will he contacting the seller for a replacement as when it’s working it really is good. I use it in my camper van and very useful for monitoring the leisure battery.

This is a very cool battery monitor. It comes with a one page instruction sheet. It's pretty easy to set up. In the settings, the maximum amp-hour you can set is 99.9, not 999.9 as the instructions indicate. Luckily it'll detect how big your battery is after you've completed the setup. You need to run your battery all the way down and then recharge it and it'll display how many AH are available. I bought a 25 foot shielded, 6 wire twisted pair cable and was able to extend the cable that came with it by that much. It seems to work just fine after the extension.

Lots of information, easy to connect and quite accurate.

Montato da circa 1 mese sul camper funziona egregiamente sia in carica che in scarica.Abbastanza preciso tranne che su valori molto bassi e sulla carica rimanente.Costa un po,ma la qualita é ottima

El monitor tiene errores entre 0,3 y 0,5 V (sobre 48V) y más de 15 A (con errores del 50% de la corriente real). No vale para nada. Lo devolveré. Por ese precio no se puede pretender un aparato de precisión pero tampoco que las medidas sean absolutamente erróneas y además inestables

Works very well. Sensor fits over a #2 wire lug and loom just fine. You just need to figure which direction it goes on the wire for the Amp Hours to count up or down correctly. A small glitch when setting voltages with the more than one number flashing but not a big deal.