Universal Battery Monitor, LCD Screen Battery Capacity Voltage Meter with Alarm and External Temperature Sensor,12-84V Acid Battery Lithium Battery Capacity Tester with Connecting Cable (Blue)

The settings button doesn't work. My 6yo son likes numbers,so he went on here and asked for this. We installed on his razor mx350 so he would know when to start heading to the house before it died. He loves it! Simple install with a rotozip on a Dremel and just put the wire leads to the battery spade connectors

This is a great reference of your battery capacity. Especially for a trolling motor where some don’t have any reference. Now I can see if my solar panel is working & how much @ any time. I have 3 total for east checks.

Hello1 I got this display to work with LiPO-FE batteries. The display lights can be turned on/off. It lights up and offers a charge percentage and voltage indication. It indicates 100% charge on a 100AH batttery even though it took five hours to bring the battery to full charge. So, not a great displlay tool. The price is right. I don't know how I can rate this higher than one Star. I will update more as I use it.

Will buy more great little thing

I bought this to monitor the battery percentage of the battery in my homemade UPS system, but percentage jumps around too much based on the load the battery is under. (Battery is 24AH.) When I draw 3A from the batteries, the percentage drops down to around 76% and when I turn off the load, it goes back up to nearly 100%. This is a battery voltage tester. Be aware that the button with the gear icon is just for show. It doesn’t actually do anything.