Demonfire 4 Piece IMR 18350 1200mAh 3.7V High Drain LiMn Rechargeable Battery with Button Top

I use batteries. I have a Nite Core MT10C flashlight on belt for EDC. I use my flashlight every day for one reason or another. I have multiple other Nite Core flashlights in my car, at home, etc. I was buying no name brand rechargables from China on ebay because a battery is a battery right? Wrong. The batteries I was buying were good, or so I thought because i had nothing to compare them to. They would last about a month to 6 weeks with everyday usage before I had to swap for a charge. These Demonfire batteries are way better. They go 3-4 months before having to swap. My flashlights are multilevel brightness, (red, low, medium, high, turbo) and multi function. (light, strobe, SOS, beacon) When any of the batteries get weak, most of the functions can't be used and you only get a low setting no matter how many times you click the switch. I describe this because it describes how long they last. China batteries were 4-6 weeks between swaps. Demonfire (i really hate that name, but they work) go 3-4 months before functions stop working. I bought these as extras after my first 2pack purchase because long lasting batteries are always good to have around.

I've had these for several months, the batteries have good life and charge quickly. They don't seem to self discharge when sitting. They work well.

Ok

Used this in my camera gyro. Didn't test the amp hrs but they did last twice as long as my go pro batteries.

I usually stick with battery brands I know esp for the lith ion types. Wasn't able to find any from EBL or other big brands in this size, so tried this one. From results to date, if these guys make other sizes I won't hesitate to buy in the future