The Ironman 4x4 270 Amp Dual Battery Kit allows two batteries to be charged at the same time. When the engine is started, the Ironman 4x4 module engages, allowing the two batteries to be charged simultaneously.

The Ironman 4x4 dual battery monitor displays the voltage levels of both batteries. The Ironman 4x4 140 Amp Dual Battery Kit eliminates the possibility of draining the starting battery, as long as your accessories are connected to your auxiliary battery.When the voltage drops below 12.8 volts (e.g. the engine is stopped), the Ironman 4x4 module disengages, isolating the batteries.

Ironman battery monitor install

Featuring:

• Dual sensing
• Automatic function
• Cut in when main battery above 13.4V
• Isolates main battery below 12.8V
• Ignition protection
• All hardware included
• Monitor dims with headlights on
• Fully sealed
• Easy to install