Working Voltage: This is the actual voltage when the battery is in use. It’s generally lower than the open circuit voltage due to internal resistance. Cut-off Voltage: This is the minimum voltage allowed during discharge, usually around 2.5V to 3.0V per cell. Going below this can damage the battery. [pdf]
[FAQS about Lithium battery pack is lower than the actual voltage]
The upper layer is in direct contact with the battery for heat transfer, and the coolant enters from the mainstream channel and radiates to the branch channel. The lower layer is used to recover the coolant and assist the cooling. [pdf]
[FAQS about Lithium battery pack upper and lower layers]
The tax exemption pursuant to § 3 No. 72 EStG applies to income from the operation of certain photovoltaic systems on, at or in other buildings (with several residential and/or commercial units) with an installed gross capacity of up to 15 kW (peak) per residential or commercial unit. [pdf]
[FAQS about Income tax exemption for photovoltaic energy storage enterprises]
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