234 BATTERY CHARGING■ Caution• Misuse of Lithium-ion batteries may result in the followinghazards: smoke, fire, or the battery may rupture. Misusecan also cause damage to the battery or degradation ofbattery performance.• Prior to using the battery pack for the first time, or after notusing it for a long time, you must fully charge the pack.Otherwise, the transceiver may not turn ON.D Battery cautionR DANGER! DO NOT hammer or otherwise impact the battery.Do not use the battery if it has been severely impacted or dropped,or if the battery has been subjected to heavy pressure. Batterydamage may not be visible on the outside of the case. Even if thesurface of the battery does not show cracks or any other damage,the cells inside the battery may rupture or catch fire.R DANGER! NEVER use or leave battery packs in areas withtemperatures above +60˚C. High temperature buildup in the bat-tery, such as could occur near fires or stoves, inside a sun heatedcar, or in direct sunlight may cause the battery to rupture or catchfire. Excessive temperatures may also degrade battery perform-ance or shorten battery life.R DANGER! DO NOT expose the battery to rain, snow, saltwater,or any other liquids. Never charge or use a wet battery. If the bat-tery gets wet, be sure to wipe it dry before using. The battery isnot waterproof.R DANGER! NEVER incinerate used battery packs since internalbattery gas may cause them to rupture, or may cause an explosion.R DANGER! NEVER solder the battery terminals or NEVERmodify the battery pack. This may cause heat generation, and thebattery may rupture, emit smoke or catch fire.