4• Do not use the battery pack if it is damaged in any way!The battery may generate heat or smoke, rupture, or burst intoflame.• Do not solder directly onto the battery!If the insulator is melted or the gas release vent or safety functionis damaged, the battery may generate heat or smoke, rupture, orburst into flame.• Do not reverse the battery polarity (and terminals)!When charging a reversed battery, an abnormal chemicalreaction may occur. In some cases, an unexpected large amountof current may flow upon discharging. The battery may generateheat or smoke, rupture, or burst into flame.• Do not reverse-charge or reverse-connect the battery!The battery pack has positive and negative poles. If the batterypack does not smoothly connect with a charger or operatingequipment, do not force it; check the polarity of the battery. If thebattery pack is reverse-connected to the charger, it will bereverse-charged and an abnormal chemical reaction may occur.The battery may generate heat or smoke, rupture, or burst intoflame.• Do not touch a ruptured and leaking battery!If the electrolyte liquid from the battery gets into your eyes, washyour eyes out with fresh water as soon as possible, withoutrubbing your eyes. Go to the hospital immediately. If leftuntreated, it may cause eye-problems.