Lights are bright and last a long time, just had to change out the battery in one I bought in 2018

it was used for 6 months, still performs well

it outperforms every other battery I've tried. The runtime is incredible

Works perfectly with high-lumen lights. No flickering or power loss at max brightness.⭐⭐⭐⭐⭐

Super safe and stable. No overheating issues, even during extended use.