User's Guide
Page 163
...functions for exchanging information related to efficiently charge the battery pack outside of this charging and using up , and insert it in your camera before taking the actual shots. • Do not expose the battery pack to how it is stored and the operating conditions and environment... if the battery pack is used for a long time, left in cold places. Buy a new battery pack. • The battery life varies according to water. So, the time that the indication on your camera immediately before you use the flash frequently. • We recommend having spare battery packs...
...functions for exchanging information related to efficiently charge the battery pack outside of this charging and using up , and insert it in your camera before taking the actual shots. • Do not expose the battery pack to how it is stored and the operating conditions and environment... if the battery pack is used for a long time, left in cold places. Buy a new battery pack. • The battery life varies according to water. So, the time that the indication on your camera immediately before you use the flash frequently. • We recommend having spare battery packs...