The best replacement for ac adapter is dc adapter.

The best alternatives to ac adapter are rated as following:
★★★★★  dc adapter
★★  battery
★★  power cord
★  battery charger
★  ac dc adapter
★  65 watt
★  65w
★  ac\/dc adapter
★  90w ac adapter
★  90 watt ac adapter
★  90w
★  120w ac adapter
  ac/dc adapter

Your alternative for ac adapter is not listed? Suggest!
Speaking about ac adapter, one probably shouldn't forget about usb port.

Other search terms related to ac adapter and their ratings are:
★★★★★ usb port
★ usb hub
★ 3ds xl
You have in mind a companion for ac adapter and it is not yet here? Propose!



Google Trends

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ac adapter
dc adapter
battery