Calculators
Each tool uses the specs on our product pages. Where a lab measured usable energy, the runtime tool uses that figure.
What can I run, and for how long
Using 2048 Wh (rated capacity; real usable energy is lower).
Loads that cycle on and off, like fridges, draw less than their running watts on average, so a steady watt figure is a rough estimate.
How many panels do I need
Look up your area on NREL PVWatts.
This is your own assumption for heat, angle, shade and wiring losses. Change it to match your setup.
Within the 650 W solar input the maker lists.
1 in series is about 26.5 V open circuit, under the 60 V top of the listed input range.
Recharge time
Uses 2048 Wh rated capacity. Real charging slows near full.