For the Remote Control: it works just fine, but i think the COST should be something with metal, wood and electronics, like the outlet for example. Nothing exorbitant, but still some cost.

Also, i would strongly suggest you put an option in the remote to turn on/off the shield. Maybe you can work the remote to be the only entry possible, turning off the DHC. SG Atlantis has almost no DHC dialling, using remotes in the ships and coms to make the dialing. Maybe you can give it a go and an option to completely turn off the DHC. There could also has an option to LOCK the remote with a pin code to prevent others to get the remote stored addresses.

For the Battery: ZPM functionality is great. I like the ideia of having an energy source like that. You should work to make an ENERGY GENERATOR that can use ZPM as fuel too. This idea is present in Atlantis. You should really work on that. Make the energy WIRELESS, like in the series. The mod CV´s Bulk Crafter has a generator called ARC REACTOR that uses Crystals to power up and provide wireless energy. This can give you some wonderfull ideas to make an electronic set with ATLANTIS ANCIENT TECHNOLOGY. It would be wonderfull.