The electric shaver in halacha is controversial. In order to understand the issues involved, please see the following online material.
Organizations:
Articles Online:
Audio Lectures:
Sites against the use of the Electric shaver:
In an upcoming post I shall post about my personal opinion and practice in this matter, but for now I hope this material will be off use to you.
1Halacha Berurah is a monthly newsletter that contains in-depth halachic discussions on contemporary issues, written in a lucid and concise, yet informative and thorough manner. It is published once a month, 12 months a year. Over 7,000 issues of Halacha Berurah are currently distributed in over 300 Shuls in the United States and Canada. Halacha Berurah has covered a wide range of topics including The International Dateline, Maaser Money, and many issues concerning the laws of kashrus and hilchos Shabbos. Each issue contains comprehensive source notes in lashon hakodesh for those who wish to research the halachic sources. (See http://www.kehillah.com/torah/hb.asp for subscription information)
2Rav Shabtai Rappaport is a son in law of Rav Moshe Tendler (Rosh Yeshiva of RIETS) who in turn is a son in law of Rav Moshe Feinstein ZT”L (1895-1986)