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Parallel Strings
To combine batteries in parallel strings, connect all like-polarity wires on adjacent
batteries to an appropriately sized terminal block for your application. Refer to Figure 3
for an example of eight 12.8V LiFePO4 batteries connected in a 4S2P configuration.
The maximum series strings that you can connect in parallel is two. Parallel string
configurations greater than 8 batteries (4S2P) are not supported.
Note: The parallel application can only extend the working time and cannot double
the charging or discharging current.
2pcs x 12.8V100Ah in Parallel
Figure 3. Example of a 4S2P Configuration
CAUTION
•
Do
NOT
connect different batches, different types, old and new batteries in series.
•
It needs to make sure the battery voltage difference is below 100mV before parallel
connection.
•
Make sure each battery has 3A minimum charge/discharge current, otherwise the BMS
wouldn
’
t detect small current accurately which will cause incorrect SOC display in the
APP.
•
Do
NOT
connect different batches, different types, old and new batteries in parallel.