Storacell Powerpax SlimLine Battery Batteries Household Supplies : Household Batteries Review

The plastic seems solid but the little corner that holds the battery on top is sharp and hard. I used a nail file to soften it up a bit, but over time I've found that it bites through my 18650 caps easily. I will continue to use them, but I highly recommend filing the pins on the top inside edge.

These battery holders are available in different sizes to accommodate different battery sizes. They make it easier to grab backup batteries and ensure your backpack doesn't accidentally drain. This is because it is extremely difficult to casually make contact with both positive and negative polls at the same time. Using these battery holders practically guarantees you'll have a charge when you need it. And that justifies the relatively low cost.

I like this product. Keeps my batteries organized and easy to carry around in my lunch/backpack for use at work. I often work the night shift, so my batteries are empty. Especially 18650 for my powerful flashlights. I hold down its button to give it a fresh charge and when I swap it out the button goes down and says 'Power off' and I rarely make a mistake with this system. I have several of these batteries of different sizes so my batteries don't hit each other or other metal objects and die or