4QD motor controllers
for battery use
4QD will be closed for Christmas 2013 from mid-day Friday 20th December. We reopen on Thursday January 2nd. Some technical support may be available by email during the closure.
Welcome to 4QD's home page.
4QD manufacture electronic motor speed controllers for battery operated electric motors.
New product soon to be available
Our established and proven Battery Condition meters are being re-designed. The first one is our 5 LED 24v battery meter which is about to become a postage stamp sized board.
The existing meters are still available.
Our latest Programmable controller: called the Prog-150, this uses digital technology and includes the programmer. Details are available.
Large Site Warning
There is a lot of information in this site, which is one of three 4QD sites: if you are interested in the information on offer you will surely need to bookmark it for many return visits! The size of the site means it can get difficult to find things - especially if you do not know what the site contains!
The site is therefore divided into commonly used areas - but there are more not-so-common areas, so do keep reading!
- Contact If you wish to contact us.
- Home always takes you to this home page
- Search we have a link to a 4QD site Google search.
© 1996-2014 4QD
Page's Author: Richard Torrens
Document URI: www.4qd.co.uk/index.html
Last modified: 2013