18650 usb batteries - Streamlight SL-B26 Protected Li-Ion USB Rechargeable Battery Pack

I recently purchased a ProTac HL 5-X flashlight. I highly recommend purchasing these rechargeable batteries. I purchased mine with rechargeable batteries and then purchased 4 more as spares. Takes 5 hours to recharge them. Run time on “High” is approximately 1.25 hours. Having spares for me, was a must. It’s an awesome flashlight, I use mine at work. Contrary to what you might be told, or have heard, regular 18650 batteries will not work with this flashlight.