[Bill Porter] put together a quick tutorial where he makes a 14.4V 2.2 AH battery for about $10. He picked up a set of cable-modem backup batteries (used to make sure your bundled phone service ...
Thankfully, a minor mod to the unit’s power cable shared by [mousehunt ... it’s a simple matter of hooking up a stout 12 V battery to the modem via its backup power connector.
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