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Hi, I have 12 300w pv's on a 5k/4k axpert. 3S4P. I want to add 3 series pv's in parallel. I'm afraid that I'm going to fry the inverter? The axpert spec's are 4kw max and VOC is 145v. DC input current is 93A and charge current is 60A. The pv's series voltage is 136.5v and parallel sc amps...

I want to know the formula to size a 48v Li ion battery for a 2kwh system. I am going to use a 5kva in inverter. The 4.6 sunhours (Bela Bela South Africa) is already factor in. I know how to calculate it for a ordinary battery but not li ion. 225ah. We get 2k5wh 3k5 , 4k8 10k etc. How do...