We human beings are all three-blade razors, Gillette Mach3 Turbos and Schick Xtreme3s, with needless cutting surfaces and useless batteries, buzzing away, wasting energy and looking sexy, forged in plenty and thriving in abundance.
A handheld gadget, no matter how many features it has, is useless when the battery dies and Wi-Fi connections have a way of sapping battery life rather quickly.
Those who tried using zinc as a negative electrode found it tended to drift around during discharge and not return to its original location during recharge, quickly rendering the battery useless.
According to Mr. Pandiya, satellite telephones supplied after a 1999 cyclone to committees of local officials deputed to make emergency preparations in Bhuj and towns nearby were useless because their batteries had been left uncharged.
Forget about all electronic devices (except a flashlight), they are usually heavy, make noise, give your location away, and are next to useless when the batteries die or an EMP attack is carried out.
At the same hearing, Bart Stupak talked about "useless" tests and dead batteries in the mechanisms that were supposed to stop this from happening.
Cell phones can't do that, because they depend on energy-storage components called electrolytic capacitors, which deteriorate over time, and because their batteries become useless after a finite number of charging cycles.
The short-range function of their radios dwindled and died, because the radios took only rechargeable batteries, which were useless in a city with no electricity.
Unless attached to costly batteries they are useless for meeting baseload demand.
This renders network lifetime maximization with battery-powered nodes useless if the lifespan goes beyond this number [13].
