YiaMia Rechargeable Flashlights, 150000 Lumens Ultra Bright, High Powered Flashlight, Waterproof LED Super Bright Flashlight with with USB Input Output for Emergencies, Camping, and More(2pack)

It’s so handy when I fixed something that I couldn’t see or use at knights

Works great, I'll need to buy some more 26500 batteries

I bought this for my daughter to go to camp. I have to say I was impressed with the brightness and I love that is rechargeable so no need to be buying batteries all the time!

These YiaMia Rechargeable Flashlights are bright and depending on where you look in the product description, they’re stated to be 150,000, 100,000, or 15,000 lumens but they are nowhere near that, at least not by FL1 Standards. The reflector is deep and smooth, and it sports an adjustable head & lens that allows the light to go from flood to spot with an intense hotspot. These give off less spill than most flashlights. However, the advertised 3,938 feet throw is quite a stretch. The closest flashlight in brightness I have in my arsenal that I could find was my SureFire G2X Pro at 600 Lumens.Adjusting the lens on one of the lights had a nice and smooth adjustment, with flood being all the way back and spot all the way forward. The other one had a wobble in the head and was not as smooth. When shaking the light, you can hear things rattling. Looking further, the lens retaining ring was loose, and I was able to unscrew it and remove the hardened "glass" lens (plastic), exposing the LED to the elements. The lens had a big chip on the edge. More importantly, it lacked a seal or O-ring of any kind, which means the advertised claim of being "IP44 water-resistant” should be taken with a grain of salt. With an IP44 rating, the light should be able to withstand splashing water from any direction.These flashlights use the heavy-hitting 26650 Li-Ion 5000mAh battery (3200mAh as measured) and come with a tube sleeve for using an 18650 battery or 3 AAA batteries with the included battery adapter. To test the USB charging capabilities, I used one of my old phones with a 5000mAh battery that I let get to about 2-3% battery. I plugged it into the flashlight's USB-A port, and it was able to bring it up to nearly 35% before the flashlight quit charging it. The charge rate was about half that of using a typical 5V 2-amp USB Power Source (or about 1 amp). The charging feature is only available using the USB Type-A port, and connecting my phone via the USB Type-C port ended up with my phone charging the flashlight. While it does feature the ability to charge other USB Type-A capable devices, it seems more for emergency power to get you partially juiced up (if the flashlight is fully charged). Once the flashlight battery gets below about 60-70%, I was unable to get the charging feature to work.It's important to note that this set doesn't come with a power source adapter, so you must "Use Your Own Power Source" (UYOPS). That's a non-issue in my opinion since nearly every household in today's day and age is likely to have a surplus of various USB charging adapters laying around.Overall, the fact that you get two of these lights can't be ignored especially for the price. They'd be great for home use and even auto but be wary of the waterproof claim. I'll probably toss these in my misc. tools drawer or maybe on the shelves in the garage, but definitely not anywhere where they will likely get used in adverse weather. Had they had O-rings in the head and no broken lens, I would likely buy again but as it stands now, I would look at a different light set.Product: YiaMia Rechargeable Flashlights, 15000 Lumens Ultra Bright, High Powered Flashlight, Waterproof LED Super Bright Flashlight with USB Input Output for Emergencies, Camping, and More (2pack)ASIN: B0BXDR51T4

Pro's:The flashlights are bright and function as a flashlight well enough. The beam width is nice and adjustable & the power/mode button is easy to use. You can either cycle through the settings to turn it off, or if you push & hold the power button for a moment it will tun off and remember the setting you were on when you turn it back on. Having the battery charge percent display by the power button is nice and it's not oversized or overly bright like some lights I've used.The flashlight charging port is USB-C so you'll more than likely already have multiple charging options at your home & in your vehicle without having to dig around and carry an older style cord for the sole purpose of charging. The USB-A port dose output a full 5.0 volts despite the flashlight battery being only 3.7 volts, and when I load tested the output port I was able to get 2.3 amps before the voltage started to drop below 4.9 volts...with the flashlight charge showing 70%. While this is really nice, there is some downsides to the system as well...see below.Con's:While the flashlight's description says "Waterproof", I think they are only referring to the light & battery ends (as they have o-ring seals). The USB port cover doesn't fit very tightly and is easily dislodged, so I think it would be pretty easy for anything other than a light rain to get in there and dropping the light into a deep enough mud puddle would probably be enough to allow water to ingress into the USB ports.And finally to the claim that you can use the flashlight to "Charge your phone" - you can charge your mobile device some if the flashlight is fully charged, but don't expect it to charge your device up fully if it has a big battery. The flashlight battery has decent amp hour capacity but the battery is only 3.7 volts, and while the flashlight does use some decent circuitry to boost the output voltage to 5.0 volts and keep it there for a bit, my testing meter measured a little over 2100 mAh at a 1.0 amp load before the port shut down. So yeah, it will give your device some needed charge to potentially get you out of an emergency situation provided the flashlight still has enough battery power remaining, but I wouldn't rely on it as a singular source for emergency power.