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5 Battery storage and recharging
5.1 Battery storage requirements
1. Storage environment requirements:
–
Ambient temperature: 0
℃
~40
℃
; recommended storage temperature: 20
℃
~30
℃
;
–
Relative humidity: 0%RH~90%RH;
–
In a dry, ventilated and clean place;
–
No contact with corrosive organic solvents, gases and other substances;
–
No direct sunlight;
–
Less than 2 meters from any heat source.
5.2 Storage expiration
In principle, it is not recommended to store the battery for a long time. Be sure to use it in
time. The stored batteries should be disposed according to the following requirements.
Table 5.2 Stored lithium battery recharging interval
1
．
If a battery is deformed, broken or leaking, discard it immediately regardless of its
storage time.
2
．
The allowable maximum stored battery recharging period is 3 years and the allowable
maximum stored battery recharging times is 3. For example, if recharging is performed
once every 8 months, the allowable maximum recharging times is 3 times; if recharging is
performed once every 12 months, the allowable maximum recharging times is 3 times; if
the allowable maximum stored battery recharging period or times is exceeded, it is
recommended to discard the battery.
3
．
A lithium battery will have its capacity decreasing after being stored for a long time,
and typically will have its capacity irreversibly decreasing by 3%
–10% after being stored at
the recommended storage temperature for 12 months. If the customer conducts the
discharge test and acceptance according to the specification, there is a risk that the
battery with a capacity less than 100% after being stored will fail the test.
5.3 Inspection before battery recharging
Before recharging a battery, check its appearance: Deformation/Shell damage/Leakage
Required Storage
Temperature
Actual Storage Temperature Recharge Interval
0
℃～
+40
℃
0
℃≤
T
≤
30
℃
12 months
30
℃＜
T
≤
40
℃
8 months