Got my first 21700 flashlight, a Convoy S21A, and it came with a LiitoKala 5000mAh battery. Is this good? What are considered the best 21700?
The liitokala is either a Bak 21700 or a Lishen 21700 depending on luck, so they are pretty good.
In 26650-land, pretty much all I had were the baby-blue LKs. Good stuuf.
What kind do Tesla use?