I just ordered a Streamlight Pro Tac HL 5-X USB flashlight. I think I want to go with rechargeable batteries in my lights. It appears the price of 18650 batteries with the USB port in the battery is much higher in price. I don’t think I really need that option. What are good options for 18650 batteries? So far it looks like Orbtronic and Panasonic have some good options. It also appears all 18650’s are not the same; apparently the flat top vs. the button tap will make a difference in
