Newmar 1-2-120A Isolator 1AIT 2BATT 120AMP

The Newmar 1-2-120A Isolator 1AIT 2BATT 120AMP is a heavy-duty battery isolation and charging system designed for vehicles and equipment operating in demanding environments where dual battery configurations are critical to mission success. Purpose-built for law enforcement, military, and off-grid tactical applications, this isolator automatically manages multiple battery banks from one or two alternators while preventing dangerous cross-discharge between battery systems. Whether you're powering auxiliary communications equipment, tactical lighting, or extended surveillance operations, this unit ensures each battery bank charges according to its specific needs without risk of overcharging or battery dumping.

The Newmar 1-2-120A features intelligent charging management rated for 12–48 volt negative ground DC systems, accommodating both standard and higher-voltage vehicle platforms common in military and law enforcement fleets. At 120 amps capacity, this isolator delivers sufficient current to charge multiple battery banks simultaneously without voltage drop or charging conflicts—critical when operating remote command centers or vehicles with extensive auxiliary loads. The system's solid-state design eliminates single points of failure inherent in mechanical relay systems, providing reliable isolation that prevents catastrophic battery failure in the field where backup power is non-negotiable.

Tactical operators, emergency response teams, and military vehicle maintenance personnel benefit most from this isolator when managing vehicles equipped with primary and auxiliary battery systems. Installation is straightforward for qualified technicians familiar with DC electrical systems; the unit connects between alternator output and multiple battery banks, requiring no additional switches or manual intervention. At just 4 lbs, the Newmar 1-2-120A is compact enough for mount-anywhere installation in engine bays, equipment racks, or command vehicle platforms. Compatible with both alternator types and battery chemistries (lead-acid, AGM, lithium in appropriate voltage configurations), this isolator integrates seamlessly into existing power distribution systems and scales across vehicle platforms from tactical trucks to command trailers.