Battery Tester Digital Battery Capacity Checker Controller Tester Voltage Tester for LiPo/Life/Li-ion/NiCd/NiMH Battery Capacity Controller

Does what it is supposed to do and seems to be accurate. I would recommend this product!

Vary easy to use and read

Works good. I think that I would stayed with original.

Works great worth the money

Using this to monitor my LiPo batteries when draining them before storage. I use an automotive turn signal bulb to drain my charged LiPos to bring them down to a safe voltage for storing them as my charger doesn't have that functionality built in. While doing this, I want to make sure I don't inadvertently bring the batteries too far below the safe low voltage. So, I set the alarm at 3.7V and connect the bulb to the battery pack. Once the alarm goes off, I disconnect the pack and put it away. The only downside I've found to these alarms is that they aren't accurate and are off by 0.1 ~ 0.2V on the safe side. So, the alarm set at 3.7V goes off when the actual voltage is at or above 3.8V per cell which actually is preferable and isn't a problem for my use case.As others have stated, it is very loud. The case simply separates into 2 halves and the actual circuit board pops right out. I may at some point disconnect one of the alarm speakers or add some padding to soften the noise.

Good quality

These are easy to use, and the alarm is very effective. They are not easy to read out in the sunlight, though. You have to shield the sun to see it well. That's not a big deal. However, I had them set to go off at 3.4 volts, and they did. But when I hooked the batteries up to my charger later, they were all reading 3.6-3.7 volts. So, that makes me think maybe these aren't exactly accurate, but I'm glad that if they are off it's that the battery is more charged than it reads rather than less charged. So, I'll probably just turn them down to 3.2-3.3 volts and see what they read next time.

Me hubiera gustado que el empaque contenedor no estuviera roto y que en la pantalla no hubiera llegado con un rayón De resto bien se ve de buena calidad, lo probaré y cuando lo ensaye terminaré de dejar mi opinión