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Mecer Axpert SOL-I-AX-5NB settings for Lithium batteries


grahamc
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hi all,

please can someone help me with the above settings. The inverter is only showing the battery as 50% full but the battery, Mecer 3000 5.1KW, shows fully charged. Mustek helpline is not very helpful, they requested I bring the inverter in.

thanks in advance

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On 2021/06/11 at 12:48 AM, grahamc said:

The inverter is only showing the battery as 50% full but the battery, Mecer 3000 5.1KW, shows fully charged.

The SOC estimate on Axperts is hopeless for lithium batteries. You need to read the SOC from the battery somehow (e.g. via monitoring software like ICC), or use a battery monitor like the Victron BMV, and set it up properly.

Settings depend on many factors; there is no right set for everyone. If you're using a 15S LFP battery and no direct-to-BMS cable, then use the settings published many times on this forum, e.g. here.

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