http://www.pulsetech.net/military/brochures/24VPCMS_BRO.pdf

I don't think you get the Solar PV panel just the charge controller (Part No. 735X640 NSN 6130-01-487-0035), but the panel is specified at 28V @ 200mA so around 5.6W

The Solar PV panel is Part No. 735X641 / NSN 6117-01-521-3099

http://www.pulsetech.net/military/prevent/prevent.html

• 12V Pulse Charge System with Panel / 735x655, NSN 6130-01-521-1317

• 24V Pulse Charge System with Panel / 735x661, NSN 6130-01-521-1387