Specifications

that lights up an LED when the voltage dips below 12v for a 4s lipo (3.0v per cell):
BRC Hobbies lipo battey saver
http://brchobbies.com/?page=shop&action=additem&item=78
There are also a few similar type items from Swang hobby, True RC and Maxamps:
Hobby Hot voltage checkers
http://www.hobbyhot.com/battery-accessories-checker-plugs-c-209.html
TrueRC Voltage Checkers
http://home.comcast.net/~truerc/du.htm
Worth noting these are generally considered as ‘passive’ devices, meaning that they wont
normally stop the truck from running, but instead just warn the user when their lipos are
becoming discharged. An audible alarm is generally better than a visual one, but it depends on
how good your hearing, eyesight, and common-sense quotient is….
Where do I get one?
Most online retailers such as MaxAmps, Amainhobbies and TowerHobbies will carry LVCs, but it is
worth looking further afield for some of the more ‘exotic’ options. HobbyHot, BRCHobbies and
TrueRC have them, but as always, Google is your friend.
For more technical information links and 'How-to' guides regarding the Traxxas trucks and
Batteries etc, please visit the 'Useful links' page on my website ( CLICK ).
NB: E-Revo 5603, 5605 & 5608 share 99.9% of the same parts- only the motor, esc
&/or radio differs between each model.