... ring, convenient to wear. 4, Maintenance-free KS2.5LM (A) miner lamp requires a special charger to recharge. The ... in the discharge time significantly reduced.Parameter of KS2.5LM(A)miner’s lampNO. item parameter unit remark 1 Rating ... and damage may affect the using life of miner'slamp.3, Miner'slamp should be stored in the ambient ... months,it must charge before using.. KS2.5LM lead-acid miner lamp