Trident Case Samsung Limited Edition Bundle - Electra Case - Case Installation Instructions - Manual (Page 10)

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16. Charging voltage must be less than
the maximum nominal voltage, and the
charging voltage upper limit is 4.3V (single
pack).
17. Temperature and humidity: the Electra
Charging Case works properly in
temperatures between 0°C~+45°C
for discharge, and 0°C~+45°C for
charge, relative humidity 45~85%, and
atmospheric pressure to 86kpa-106kpa.
If the Electra Charging Case will be
used for long periods of time under the
temperature of 0°C, the capacity of the
case will reduce or will cease to work
properly.
18. Since charging is done with a constant
current or a constant voltage, reverse
charging is prohibited.
19. Transportation and storage: For short
periods of less than one month, the
Electra Charging Case must be stored
in a location where the temperature
is between -20°C~55°C and relative
humidity ≤65%. For long periods of less
than three months, the Electra Charging
Case must be stored in a location where
the temperature is between -10°C~45°C
and relative humidity ≤65%. For long
periods greater than three months, the
Electra Charging Case must be stored
in a location where the temperature
is between 20°C~45°C and relative
humidity ≤65%. If the Electra Charging
Case will not be used for long periods of
time, completely charge and discharge
the battery once a month at least. Store
the battery with a 50% charge (two LED
lights).