Power Storage Solutions 12MQ100 - 620, Installation & Operation Manual

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6 Operation of B attery
6.1 Refresh C harge
During the delivery and storage, the battery will lose part of the capacity due to self discharge, so
please apply a supplement al charge before use;
If storage occurs before installation / connection, supplement charge regularly; Supplementary
charge according table 2 below before use:
Table 2 the time interval of supplementary charge and storage temperature
Storage
temperature
Time interval of
supplementing
charge
Supplementing charge way
< 20°C Every 9 months
Three options to choose from:
a) Charging at a constant voltage of 2.23-2.30V/cell and initial
current to be less than 0.3C (A) for 2-3 days
b) Charging at a constant current of 0.3C(A) and a constant
voltage of 2.30-2.40V/cell for 10-16 hours
c) Charging at a constant of 0.1C(A) for 8-10 hours
20°C ~30°C
Every 6 months
>
30°C to 40°C
Every 3 months
Note:
Current value C is rated capacity of battery.
Example: rated capacity of 2V300AH battery is 300AH, 0.1C (A) = 0.1X300 = 30A;
6.2 Discharge
Ensure the maximum allowable discharge current does not exceed the rated value.
Refer to the individual battery literature for discharge rates to different end VDC at 77
⁰
F (25
⁰
C).
6.3 Capacity D ischarging T est
Use the test procedure as identified in IEEE standard 1188.
6.3.1 Before doing any type of discharge test

Make sure the battery is fully charged with an equalize charge, followed by a battery returning to
float for 7 additional days before the test for maximum results. Make sure all of the connections
are clean, tight, and do not have high resistance connections. The ambient temperature should
be 77°F (25°C) or corrected for temperature as per the IEEE K factor chart.

Terminal voltage, ambient temperature, and start time should all be checked and recorded before
commencing discharge.

Terminal voltage, discharge current, room temperature should be checked and recorded throughout
the discharge period.

Battery should be recharged soon after the discharge, using a voltage regulated charger.
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