Specification: Name 18650 Rechargeable Battery Brand Shockli Capacity 3100m Ah Continuous / Max discharge current 35A/40 A Internal resistanceless than 20 m Nominal voltage 3.7 V Head type Flat top Protected No Rechargeable battery Yes Rechargeable timeup to 500 times Standard charge 0.3A~3A (Recommend 0.5A~1.5A)/ 4.2V+/-0.05 V Working voltage 2.75
- 4.2 V Charging time 3.5 hours (Charge current 1.0A) Customer Instructions: Ideal for: higher power levels device & flashlight, Use 2 X 18650 UP to 180W, Recommend for regulated at 50W- 150 W Important Note: Flat top (unprotected), Does not make contact if flashlight that contact battery positive do not have spring or salient point Must charge battery fully before first use Package Included:2 X 18650 battery 1 X 18650 plastic case