Narada Power Source Co., Ltd.
Eos operation manual V5.3
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terminal, container and lid.
— Measure and record the total voltage and floating current of the battery system.
7.2 Quarterly Maintenance
— Repeat monthly inspection.
— Measure and record floating voltage of every on-line battery. If more than two
cells’ voltage is less than 2.18Vpc after temperature compensation, the
batteries need to be equalization charged.
7.3 Yearly Maintenance
— Repeat quarterly maintenance and inspection.
— Check whether connectors are loose or not every year and tight them
—
Make a discharge test to check with exact load every year, discharging 30-40%
of rated capacity. Make an 80%DOD capacity test every year after three years’
operation.
7.4 Operation and Maintenance Precautions
Insufficient Charge
If the floating voltage is not set correctly (too low or not compensate according to
temperature), the battery system will in an insufficient charge state for a long
period of time. When the electricity is out, the battery may not be able to work
because the acid is satirized and the capacity is decreased.
Over Charge
If we neglect the performance of rectifier to transfer floating charge to equalization
charge. If the rectifier cannot transfer charge modes because of its wrong
performance or no adjustment, the battery system is always in an equalization
charge state. Thus may cause serious problems for battery, such as water loss, life
decrease, thermal runaway, deformation, etc.
Too low or too high temperature
We have mentioned that too low temperature will affect the capacity of battery.
While too high temperature will also cause problems, such as water loss, life
decrease, thermal runaway, deformation, etc.
Too low end voltage
The end voltage is also an important parameter for battery. The battery shall stop
discharge when reach a certain voltage (The normal end voltage is 1.8Vpc for 10
hours rated). If the end voltage is too low, it will be difficult to recharge the battery
and decrease the charge efficiency, thus reduce the life of battery.
Long time storage after discharge
If the battery is put aside without charge for a long time after discharge, it will
affect the capacity and life of the battery, because some large size PbSO
4
will be
created in the negative, which are difficult to transfer to active Pb. Thus it will
affect battery life and capacity