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3.4 Battery Connection
3.4.1 Lead acid Battery Connection
User can choose proper capacity lead acid battery with a nominal voltage at 48V for 48V model and at 24V
for 24 model.You need to choose battery type as “AGM(default) or FLD”.
CAUTION:
For safety operation and regulation compliance, it’s requested to install a separate DC over-
current protector or disconnect device between battery and inverter. It may not be requested to have a
disconnect device in some applications, however, it’s still requested to have over-current protection installed.
Please refer to typical amperage in below table as required fuse or breaker size.
Ring terminal:
WARNING!
All wiring must be performed by a qualified person.
WARNING!
It's very important for system safety and efficient operation to use
appropriate cable for battery connection. To reduce risk of injury, please use the
proper recommended cable and terminal size as below.
Recommended battery cable and terminal size:
Model
(48V)
Maximum
Amperage
Battery
capacity
Wire Size
Ring Terminal
Torque
value
Cable
mm
2
Dimensions
D (mm)
L (mm)
SPF 2000TL
47A
100AH
1*6AWG
14
6.4
29.2
2~ 3 Nm
2*10AWG
8
6.4
23.8
SPF 3000TL
71A
100AH
1*4AWG
22
6.4
29.2
2~ 3 Nm
200AH
2*8AWG
14
6.4
23.8
SPF 4000TL
94A
200AH
1*4AWG
22
6.4
39.2
2~ 3 Nm
2*8AWG
16
6.4
33.2
SPF 5000TL
117A
200AH
1*2AWG
38
6.4
39.2
2~ 3 Nm
2*6AWG
28
6.4
33.2
Model
(24V)
Maximum
Amperage
Battery
capacity
Wire Size
Ring Terminal
Torque
value
Cable
mm
2
Dimensions
D (mm)
L (mm)
SPF 2000TL
94A
100AH
1*4AWG
22
6.4
29.2
2~ 3 Nm
2*8AWG
16
6.4
23.8
SPF 3000TL
141A
100AH
1*2AWG
38
6.4
33.2
2~ 3 Nm
200AH
2*6AWG
28
6.4
29.2
Note: For lead acid battery, the recommended charge current is 0.2C(C
battery capacity)
Please follow below steps to implement battery connection:
1.
Assemble battery ring terminal based on recommended battery cable and terminal size.
2.
Connect all battery packs as units requires. It’s suggested to connect at least 100Ah capacity battery for
2KVA/3KVA model and at least 200Ah capacity battery for 4KVA/5KVA model.
3.
Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are
tightened with torque of 2-3 Nm. Make sure polarity at both the battery and the inverter/charge is correctly
connected and ring terminals are tightly screwed to the battery terminals.
