weBoost Support - April 23, 2018 17:07 Can I use a weBoost cellular signal booster in a car or boat that has 12v DC power? Print Absolutely. weBoost vehicle signal boosters that require 6v DC power ship with a power supply that will convert 12v DC to 6v DC. Every weBoost signal booster includes a power supply that provides the correct voltage for its designed application. Related articles Can weBoost mobile cradle boosters be used to boost more than one phone at a time? Is it possible to split the indoor signal to two antennas by using a splitter? Where can I see installation and product selection videos? Can I hold my Yagi antenna to point it in different directions while tuning it to a cell tower? I don't see any improvement after installing the eqo Booster. What should I do?