Recommendations for 
Battery Use
For long-term storage, the built-in and removable batteries should be 
partially charged – from 50 to 80%.
Batteries should be charged at an ambient temperature of 0 °C ... +35 
°C. Otherwise, battery life will be significantly reduced.
When using batteries at sub-zero ambient temperatures, the battery 
capacity decreases, this is normal and not a defect.
Do not use batteries at temperatures outside the range of -25 °C … +50 
°C – it may reduce the battery life.
The battery has a short-circuit protection. Any situation that may cause 
short-circuiting, however, should be avoided.