Is this kit enough to run a camper van?

It covers lights, a fridge, fans, phone and laptop charging for a small-to-medium van. Running an air conditioner or induction cooking needs far more capacity and a bigger inverter.

How much usable power do the two AGM batteries give?

AGM should not be discharged below about 50%, so the 2.4kWh bank gives roughly 1.2kWh of usable energy. Plan daily use around that figure.

Can I add more panels later?

The charge controller sets the limit. Check its rated amps before adding panels; a larger controller is usually needed for more than the four included.

Do the panels work in shade?

N-type cells and bypass diodes reduce losses when part of a panel is shaded, but output still drops. Keep panels clear of tree cover where possible.

What is included in the box?

Four 100W panels, two 100Ah AGM batteries, a charge controller, mounting brackets, tray cables and adapters. An inverter and fuses are not included.

AGM or lithium for this setup?

AGM is cheaper up front and tolerant of cold charging limits, but heavier and shorter-lived. Lithium lasts longer and gives more usable capacity for the same rating.