Narada Power Source Co., Ltd.
Eos operation manual V5.3
22
Fig. 3-4 Battery Selection Mode
（
end voltage 1.80Vpc
）
5. Requirement for Charge
5.1 Periodically Equalization Charge
The battery needs an equalization charge after floating operation over three
months, or the voltage of at least two batteries are lower than 2.18V. The method
of equalization charge is constant current and limited voltage, as follows: charge
with constant current of 0.1C
10
A
～
0.20C
10
A till the average voltage reaches
equalization charge voltage of 2.35Vpc (25
℃
), then keep charging with
equalization charge voltage, meanwhile, the current is reduced, till the charge
finished. The charging time is 24 hours.
5.2 Charge after discharge
After discharge, the batteries should be charged in time. The charge method is
constant current limit voltage as follows: charge with constant current of
0.1C
10
A
～
0.20C
10
A till the average voltage reaches a certain voltage, then keep
charging with this voltage, meanwhile, the current is reduced, till the charge
finished.
The certain voltage could be equalization voltage or float voltage. When the depth
of discharge is larger (normally larger than 10%), equalization voltage is
recommended so as to give fully charge to the battery. We can also determine
charge voltage according to initial current. When the current is larger than
0.05C
10
A (reference current to change to equalization charge), equalization voltage
is recommended. The charge time is 24 hours.
We can also setup the charge
voltage according to different DOD, different charge current shown in figure 3-4,
or we can judge according to charge current value.
