LED Miner Safety Lamp: 1. LED 2. Battery: >500 cycles 3. Lighting Time: >20 hours 4. Explosion-proof Product Features:a. Model meaning: K - Miner lamp, L - Lithium battery, 5 - 5Ah---battery capacity, L - LED illuminant, M - Maintenance freeb. The green light in lamp head will auto-change to red when the charging is ended.c. The main illuminant will convert to the secondary once the battery ...