The total power of the two batteries is 12*105*2=2520W. Generally, it is best not to drain the battery. It should be charged when the remaining 20% is used. The conversion rate of the inverter is generally 90%, and 10% is consumed. 2520*80%*90%=1814.4W. When two batteries are fully charged, they can power 100W electrical appliances for 18 hours, or power a total of 200W electrical appliances for 9 hours, or power a total of 1000W electrical appliances for 1, 8 o'clock. Divide 1800 W by the total power of the electrical appliance to get the time.
If you buy a 200W solar panel, based on 5 hours of effective sunshine per day, you can charge 1000W of electricity in one day, and two batteries can be fully charged in two days if you buy a 400W solar panel. solar panel, it can be fully charged in uno sunny day. If the weather is cloudy, it will not fill as quickly and will take a few days to fill.