Can I use the PNL10 with a traditional lead acid battery or power it from AC mains?

Absolutely. The PNL10 is designed to operate from any DC source from 5.5VDC to 18VDC including traditional 12VDC nominal lead-acid batteries. To operate from AC mains, you need to provide an inexpensive 5 Watts or greater AC to DC converter. Many such converters are available in the market.