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                                How Do I Replace a Fuse
                                    Replacement background:
                                    When the SUN2000 is faulty, the Battery fuse is likely to be damaged. In this case,
                                    check whether the fuse is open-circuited and replace it.
                                 
                                    Step 1
                                    
                                        Power off the system. For details, see System Power-Off.  >
                                    
                                    
                                 Step 2
                                    
                                        Loosen the screws on the fuse shell.  >
                                    
                                    
                                 Step 3
                                    
                                        Lift the fuse box opening, remove the fuse, insert a new fuse into the slot, and
                                        close the fuse box. If you hear a click sound and the bulge on the side is
                                        inside the box, the fuse box is properly installed.  >
                                    
                                    
                                 
- 
                                SOC Change Description
  
                                    1. How does the SOC change from 99% to 100% when the battery is about to be fully
                                    charged?
 When the SOC is greater than 99%, the battery switches to float charging and the
                                    charging current decreases gradually. Finally, the SOC reaches 100%.
 
 
                                    2. When the battery temperature is low, the charging power is displayed as about 300
                                    W, but the SOC does not change. Why?
 When the internal temperature of the battery module is low, the internal heating
                                    component starts to heat the battery. The heating power is 300 W (typical value).
                                    When the heating component is working, the battery is not charged and the SOC does
                                    not change. Battery heating helps to keep the cell at a proper operating temperature
                                    and prolong the service life of the product.
 
- 
                                Checking Cable Connection when the Battery Fails to Be Upgraded
                                    If the battery fails to be upgraded, check the cable connections by referring to
                                    Electrical Connection. If the upgrade fails, reconnect the cables correctly and
                                    perform the upgrade again.
                                 
- 
                                Delayed Upgrade Description
                                    After logging in to the inverter, if the FusionSolar app detects that the LUNA2000
                                    firmware version is outdated, the app prompts you to upgrade the LUNA2000. You can
                                    choose immediate activation or delayed activation. If you choose immediate
                                    activation, the LUNA will be upgraded immediately after the firmware package is
                                    uploaded. The upgrade process takes approximately 30 minutes. If you choose delayed
                                    activation, the activation of the firmware will be performed four hours after you
                                    log out of the app.
                                 
- 
                                How Do I Recycle Used Batteries?
                                    NOTICE 
 
 - The Company does not recycle batteries. Contact local recycling agencies to handle
                                    batteries.
 - If there are no such agencies in your area, you can contact the nearest foreign
                                    recycling agencies.
 
                                    Step 1
                                    
                                        Contact the nearest recycling agency.
                                    
                                 
                                    Step 2
                                    
                                        Recycling agencies assess the costs.
                                    
                                 
                                    Step 3
                                    
                                        Recycling agencies carry out recycling, which can be done in two
                                        ways:  >
                                    
                                    
                                 
                                    Step 4
                                    
                                        Recycling companies handle recycling. The recycled lithium batteries are at the
                                        disposal of the recycling companies.