Battery Capacity - Panasonic LJ-SK56A Installation Manual

1-5 Battery Capacity

A battery capacity to maintain its charge 'State of Health' (SOH ) slowly decreases over time due to the charging
*1
& discharging process.
C
The following chart shows typical SOH decrease at 25 °
, 1 cycle/day.
Discharge Usable
SOH
time capacity
2.5h 5.3kWh 100%
< < <
1.5h 3.18kWh 60%
*1 : SOH = State of Health
0 years 10 years [ time ]
1-6 Battery Charge and Discharge Cycles
A 'one charge/discharge cycle' definition is when the batteries over a 24 hour period are discharged to their minimum
remaining battery level then re-charged to their maximum remaining battery level. This is the recommended and
factory default known as 'Maximum Self consumption Mode'.
We do not recommend charge/discharge mode that exceed the one per day cycle (i.e multiple daily full charge/
discharge) as the battery capacity will fall below 60% sooner than 10 years.
1-7 DRED Mode
DRED provides a method by which a controlling authority, most likely a power supply company, can limit the amount
of power that the storage battery system can consume in comparison to its nominal full load power
consumption.
The aim is to reduce overall power consumption to the supply network at critical peak load times.
*
DR mode is given priority from other modes.
7