AlpsWolf Super Bright Rechargeable LED Spotlight Flashlight, 4000LM, 20H Ultra-long Standby, Waterproof with USB Output, Camping Accessories

I like the flash light it's easy to carry and it shines bright

it's much light than i think.easy to carry. bright,but not that as description,I have a renovation light, more bright than this,but this is bright enough for out door, camping,also there is a battery level show you how much power you have. its a good one.

Okay, this will be a long post. Here is the short version. Works as expected for price, they "lie" about capacity. I just bought this light after a big power outage. I have about 10-15 other powerbank/flashlight devices, and just wanted one I could give to folks that I didn't mind if they broke. Upon arrival, it didn't work. No buttons worked in any way. I figured it wasn't charged, so I plugged it in. One light then worked, the other didn't, and battery showed as full. I figured the capacity lights didnt work while charging and left it for an hour. Unplugged it, no light. The power cells inside were clearly not connected. I had started a return process when I decided hey, I'm a technician, I work with controls and wiring, let me try and fix it. I took it apart, and the mounting bracket for the power cells was broken. They were ziptied to it, so this let tge battery sag. The result being that the wires got pulled off of the PCB. This is terrifying, because if they shorted in transit or at my house, the lithium cells could have caught fire. There is no battery management system after that solder connection, so that was very bad. I resoldered the connection, used epoxy and a 3d printed brace to firmly reattach the power cells, and now it works great. The problem with it was almost certainly caused during transit, so I can't fault the product too much, but there are several simple things that would have prevented this issue. #1 Use a stronger attachment method for the battery. That thin piece of plastic cannot support the cells. #2 Instead of a surface solder for the wires leading to the battery, arguably the most important wires, use a PCB passthrough hole. This would allow a FAR stronger connection. Now, for the Lie. The product description clearly states there are 3 cells. Mine only has 2. If I had the 3rd cell as it was supposed to, that would be an additional 50% capacity than what I have now. Granted, 32650 cells are theoretically 7500 mah, so 2*7500=15,000 checks out. Actually capacity seems lower than this rated amount, but not any less than I expected. I canceled the refund as I have fixed my product, and it is basically what I expected, minus a small drop in capacity, which doesn't bother me. Lights work well, brightness is roughly as expected (but I expected less than rated, as companies love to use "theoretical capacity and performance") I have a several hundred dollar light and powerbank alternative with a 2500 lumen light which is roughly as bright. I didn't check if the cells were wired in parallel or series, if they were in series then the 3rd missing cell might account for the drop in lumens, but I doubt it. Summary: rush shipping damaged product, design flaws allowed damage, power cell count is incorrect but theoretical capacity is correct. Lumens appears to be lower than claimed, but I don't have any accurate light sensors to determine for sure, and my power cells could have shorted during transit damaging them, resulting in lower voltage and thus lower lumens. Can't claim it will be the same brightness for you. I'm reasonably happy with the purchase, since I was able to fix it.

Hey great light not great battery life

Great for when electricity goes out..