Samsung ICR 18650 30Q Brand: Samsung Model: 30Q Color: Pink Size: 18650 Chemistry: ICR Nominal Capacity: 3000mAh Nominal Voltage: 3.6V Discharge: 20A Max Continuous, Underrated by Samsung SDI as 15A Max Continuous Positive: Flat Rechargeable: Yes Dimensions: 18.23mm x 64.78mm Caution: Never completely discharge li-ion battery ( below 2.5V under load ). Charge fully to 4.2V before first use. Never use force to install (insert) li-ion battery. Do not use old and new battery cells together. Use only high quality battery charger. Do not expose to heat. Do not short (connect) positive (top), and negative (bottom) battery terminals (contacts). Keep battery that is not in use in plastic holder (or any insulating [plastic] container). Never charge battery over 4.25V (another reason to use high quality battery charger). Do not charge unattended. Do not use old, and new cells together. Do not store your li-ion batteries fully charged (for extended period of time). Store in cold and dry place at approximately 3.7V (storage charge). Don't leave it discharged. Charge it as soon as possible. NOTE: FREE case(s) are provided to you at no additional cost. Cases normally arrive in good condition, however rough handling by the logistics company and other factors can result in a damaged case. Cases broken in transit will not be reshipped. The shipping cost is ten times the items worth.