Filed under: Misc. GadgetsAT&T is looking to replace 17,000 backup batteries in U-verse equipment cabinets all over the country over concerns that they can explode. Those are confirmed concerns, too, as there have bee four confirmed incidents since October 2006. Explosions have occurred in Houston, Cleveland and Wisconsin; the Wisconsin incident reportedly was strong enough to blow the 50-pound cabinet door off its bolts. The bad news for AT&T is that the battery manufacturer, Avestor, filed for bankruptcy in October 2006 and is no longer in business. What's worse is that a consulting firm hired to ex
