... professional battery SHFL-017 Spec. Key Specifications:1.Characteristic:2.Reliability: The shell is made from aluminum material for aeronautics ... vibration4.Safety: Compact, dust-proof and waterproof, the battery is auto-protected if it is over charged or discharged5 ... bulbs and no any maintenance cost)7.Environment consideration: Lithium battery, green, and environment protected, no memory, and low ...