DNT Optics Flat Top Batteries w/ Charger 2. Manufactured using some of the longest lasting resources on the market these Batteries from DNT Optics can keep your devices operating for an impressively long time. DNT Optics has been developing high end batteries for a number of years and the DNT Optics 18650 Flat Top Batteries w/ Charger is proof of their determination to providing the people with the best battery packs available. For a great way to make sure that you are using heavy duty and trustworthy power packs pick the DNT Optics 18650 Flat Top Batteries w/ Charger. Specifications for DNT Optics 18650 Flat Top Batteries w/ Charger: Manufacturer: DNT Optics Color: Black Battery Quantity: 1 Battery Type: 18650 Package Contents: DNT Optics 18650 Flat Top Batteries w/ Charger DNT Optics P-18650-CH: 18650 Flat Top Batteries w/ Charger