A drawback of the portable gadget revolution is having to carry the chargers needed to keep them going. Even gadgets that use AA-size batteries use a variety of chargers. Now Moixa Energy of the UK has come up with an ingenious alternative: an AA battery that does away with the need for a charger by using a USB socket.
Nearly all computer equipment and even some hi-fis and video players now have USB ports for connecting peripherals such as memory sticks or digital cameras. These ports supply 5 volts to whatever is connected.
To recharge Moixa’s nickel metal hydride battery,…
