17
In the off-grid state, the LG Chem battery can only supply power to loads of maximum
5KW (such as RESU10H_Type_R). For the first operation of the inverter with LG Chem
battery, either PV or grid needs to power the inverter to activate the LG Chem battery.
The SOC limits of Li-ion batteries can be modified via the iSolarCloud App by qualified
personnel.
3.3.1 Charge Management
B
Ba
ac
ckku
up
p C
Ch
ha
arrg
ge
e M
Ma
an
na
ag
ge
em
me
en
ntt
The emergency charge management function is to protect the battery from the damage
caused by long time excessive discharge. The inverter cannot respond to discharge
command during emergency charge. The following tables describe the emergency
charge conditions for different types of batteries.
table 3-3
Backup Charge Management for Li-ion Battery
S
Stta
attu
uss
C
Co
on
nd
diittiio
on
nss
Trigger
Either of the following conditions is met:
•
SOC ≤ (Min. SOC) – 3% (valid only when the Min. SOC is ≥ 3 %).
•
A battery under-voltage warning is triggered.
•
An emergency charge command is reported to the inverter.
Finish
All the following conditions are met:
•
SOC ≥ (Min. SOC) – 1% (valid only when the Min. SOC is ≥ 3 %).
•
The battery under-voltage warning is cleared.
•
The emergency charge command reported to the inverter is
cleared.
table 3-4
Default SOC Conditions for Li-ion Battery Backup Charge
T
Tyyp
pe
e
T
Trriig
gg
ge
err S
SO
OC
C
F
Fiin
niissh
hiin
ng
g S
SO
OC
C
SUNGROW
SOC ≤ 2 %
SOC ≥ 4 %
LG Chem
SOC ≤ 5 %
SOC ≥ 7 %
BYD (Battery-Box HV)
SOC ≤ 7 %
SOC ≥ 9 %
BYD (Battery-Box Premium HVM
/ HVS)
SOC ≤ 2 %
SOC ≥ 4 %
User Manual