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The lithium battery can be connected.
The communication protocol of the lithium battery must match the communication protocol of the inverter to ensure normal communication, and the inverter can then obtain battery parameters. If you use a lithium battery that does not match the communication protocol, the battery parameters cannot be obtained, resulting in uncontrollable charging and discharging current. This can easily lead to overcharging, overdischarging, or even damage to the battery. Therefore, in US2 mode, the battery charging and discharging parameters need to be manually set. For specific setting parameters, you must consult the battery manufacturers to avoid any safety accidents.
