The StreamlightA(R) 18650 Bank Charger is designed to individually charge and maintain up to eight StreamlightA(R) 18650 LI-ion rechargeable batteries. The StreamlightA(R) 18650 LI-ion rechargeable battery is an economical alternative to disposable CR123 cells used in newer StreamlightA(R) flashlights that are designed to accept both 18650 rechargeable battery disposable CR123 cells types. The StreamlightA(R) 18650 Bank Charger is available with (8) 2600 mAh 3.7v LI-ION batteries and is also available without batteries. 8-unit Bank Charger: Organize, store and charge up to 8 batteries Charge time: 5.25 hours Charge bays securely hold batteries in place - ideal for truck mounting Charge indicators of each battery slot: red = charging, green = charged Low profile - 1" (2.54 cm) - minimal mounting area required Impact-resistant polymer construction 10.45" x 4.74"x1" (26.54x12.06x2.54cm); 7.6 oz. (216g) w/o batteries; 20.88 oz. (592g) w/ batteries Meets requirements of NFPA 1901-14.1.10.2 (2016) mounted in upright position The battery that transforms our high-performance, multi-fuel lighting tools into RECHARGEABLE SYSTEMS. Battery Features: 18650 button top lithium ion battery with built in Micro-USB charge port Charges in 5 hours Integrated safety circuit protects battery from overcharge/over discharge 2.75 in (7.0 cm); 1.7 oz (48 grams) Use the 18650 USB battery to power the Vantage 180 X, PolyTac X, ProTac 2L-X, ProTac HL-Xand ProTac HL 5-X and transform these multi-fuel lighting tools into rechargeable systems Specifications Battery Type: 18650 Lithium Ion Battery Battery Quantity: 1 Length: 2.75 inches (6.98 centimeters) Weight: 1.70 ounces (48.19 grams)