Learn how much energy you have left on your battery before it runs out

This gadget works with batteries C, AA, AAA, D, N, 9V 6F22 and rechargeable or classic batteries.

If you want to know exactly how much energy you have left on your battery, maybe to know when you should buy a new one or if it has enough capacity to finish some long action like finish a level on your favorite videogame, you can know it by only $8.70 on Amazon (https://www.amazon.com/dp/B06WLHM9TP/ref=cm_sw_r_cp_apa_fabc_0RMCRYBBSGT7GAK7B3JS).

It works with any kind of battery because it has different spaces to enter the exact type/size of your battery. What it does is measure the voltage your battery have left on it and converts it to a percent and this is displayed on the little screen of this device. Because batteries, depending on the type, have different amount of max voltage, it also take this into consideration when showing you the percent of power left. What is even better is because its consumer-friendly design, you can know what you want to know in an easy way, without having to do some complicated math calcs, as you would have to if you buy a volt-meter.

On Amazon you can find more alternate versions of this gadget, but I recommend you specifically this one because, as reviewers pointed out, with this version you won't have problems related to battery not fitting where it should be.

Hope you find this gadget as useful as I did!