How to choose solar generator?

Usually, most of people call solar generator power that's inverter power.

For Example , 500W portable solar generator,1000W portable solar generator.

But why same that's   500W portable solar generator or 1000W portable solar generator,different supplier the price is much difference?

Answer:

1. the battery type different. that have lead acid battery, lithium battery.

2. battery capacity is different.

3. battery cycle life is different

4. battery warranty is different.