Klarus 16340 700mAh 3.7V Protected Lithium Ion (Li-Ion) Button Top Battery - Plastic Case
EBL 8-Pack 16340 Li-ion Rechargeable Batteries 750mAh 3.7v CR123A Battery for LED Flashlight Torch - Walmart.com
The 16340 Lithium Battery Blue 3200MAH 3.7v Used For Electronic Products Such As Bright Flashlight Laser Pen Book Sales Pen And So On From Stralightcom, $1.35 | DHgate.Com