Mobile- loving freelancers rejoice, CradlePoint has the solution for your write-anywhere needs. One of the biggest hassles for many cash-strapped freelancers is wi-fi connectivity. Starbucks makes you charge or use their gift cards to access wi-fi, and some shops (including some Panera Bread locations) have a time limit on their free wireless access.

And what if you aren’t anywhere near a coffee shop, public library or college campus? Plenty of freelancers avoid these areas like the plague–the noise factor alone is enough for some.

Enter the CradlePoint PHS300, a battery-powered personal wi-fi network for those who have 3G wireless accounts. Plug in a cell phone or USB modem that has 3G wireless access and you have an instant wi-fi network. Work anywhere for up to three hours per battery charge on the PHS300. Did we mention there’s a car charger for this and you can connect multiple users?

Here’s the rub–your cell phone must support tethering, and AT&T currently does NOT–at least not for us iPhone junkies. iPhone users with third-party hacks on their phone (known as “jailbreaking” and done at your own risk as a violation of the TOS) may be able to use the CradlePoint, but we haven’t verified this.

But plenty of cell phones and USB modems DO support tethering, including Blackberries and some Motorola RAZR models. Check a full list of compatible devices at the bottom of this page at CradlePoint.