My cable modem has a battery back-up that lasts 2 hours.How can I best extend that (for telephone operation)?

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My cable modem has a battery back-up that lasts 2 hours.How can I best extend that (for telephone operation)?

I have a portable '12 v. jumper pack-portable' with a cigarette style power tap. Would it be most efficient to utilize a step down transformer that taps into the back-up battery connections vs. a 12v. d.c. to 120v. a.c. adapter?

2007-12-17 04:14:57 · 2 answers · asked by racer123 5 in Consumer Electronics ➔ Other - Electronics

2 answers

Get a UPS (uninterpretable power supply), plug the cable modem into it.

You can buy one at Best Buy for ~$50.00

I've got a UPS on every computer in my house.

2007-12-17 04:24:28 · answer #1 · answered by Fester Frump 7 · 0⤊ 0⤋

Your best bet is to get a UPS (uninterruptible power supply). The more money you spend, the longer backup you can get.

2007-12-18 19:26:19 · answer #2 · answered by tzoggas 4 · 0⤊ 0⤋