Use and Care Manual

LEOCH Battery Corporation
6. Operation of battery
6.1 Supplementary charge
 During the delivery and storage, the battery will lose part of the capacity due to self-discharge, so
please supplement 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 discharging test
Use the test procedure as identified in IEEE standard 1188.
6.3.1 Before doing any type of discharge test
a) 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.
b)
Terminal voltage, ambient temperature, and start time should all be checked and recorded before
commencing discharge.
c) Terminal voltage, discharge current, room temperature should be checked and recorded
throughout the discharge period.
d)
Battery should be recharged soon after the discharge, preferably using a