Special Features:

Battery vibrates so you can receive a call without the irritation of a ringing phone; maker name is an ericsson 600/1228/r280, nickel metal vibrating batteries

Properties:

A device consisting of one or more components utilizing an alternating or direct current source to reactivate batteries in which reversible chemical reactions occur. Use only for devices containing resistors, metallic, or electronic type rectifiers or vibrators and which are specifically designed for the purpose of charging batteries. May include filters, meters, load contactor and alarm circuits. Includes battery charging switchboards which are supplied with integral or external means of rectification.