The Ironman 140 Amp Dual Battery Kit allows two batteries to be charged at the same time. When the engine is started and the main battery reaches 13.4 volts, the Ironman module engages, allowing the two batteries to be charged simultaneously.
Ironman battery monitor install
Cut in when main battery above 13.4V
Isolates main battery below 12.8V
All hardware included
Monitor dims with headlights on
Easy to install
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