Just DC to DC :)http://www.amazon.com/dp/B002L6R13012V, 9000mAh rechargable, SLA battery, F2 terminals$16.24 USD (!)http://www.amazon.com/dp/B000CITK8S -- 12v chargerhand out plug-in wifi repeaters to neighbors, attached to 12v batteryplug-in wifi repeaters could be cheaper than full-on routerscaptive portal (since there is no internet connection here anyways except for my phone, which is slow-DSL