My Account
Shopping Cart

NewMar NS-12-20 StartGuard Battery Backup Power Supply 20 Amp

Manufacturer

NewMar

<h3>NewMar: Trusted DC Power Solutions for Over Five Decades</h3> <p>NewMar has established itself as a premier manufacturer of high-quality DC power products, bringing more than 50 years of engineering excellence to the automotive, marine, and telecommunications industries. Known for their rugged construction and intelligent charging technology, NewMar products deliver reliable performance in demanding environments ranging from emergency service vehicles to off-shore marine applications.</p> <p>The company's reputation is built on a foundation of innovation and quality control. With complete in-house manufacturing capabilities including CNC machining, PCB design and assembly, and comprehensive function testing, NewMar maintains exacting standards throughout the production process. This vertical integration ensures that every product meets the brand's stringent reliability requirements, making NewMar a trusted choice for professionals who depend on consistent power delivery.</p> <h3>Advanced Battery Charging Technology</h3> <p>At the heart of NewMar's product lineup is their proprietary Phase Three smart charging technology, which sets the standard for intelligent <a href="/11280-newmar-vehicle-battery-2476">vehicle battery</a> management. Unlike conventional chargers that can overcharge or undercharge batteries, NewMar's three-stage charging process—bulk, absorption, and float—optimizes charge cycles to maximize battery performance and extend service life. The chargers feature adaptive voltage regulation that automatically adjusts for different battery types including flooded lead-acid, AGM, and gel-cell configurations.</p> <p>NewMar battery chargers are engineered for hostile environments, with rugged stainless steel cases, polyurethane-coated circuitry for corrosion resistance, and sealed construction that prevents dust and moisture intrusion. These chargers can withstand the punishment of off-road vehicles, mining equipment, and marine installations where reliability is non-negotiable. Multiple isolated output banks allow simultaneous charging of separate battery systems, while integrated current limiting prevents damage from overloading.</p> <h3>Remote Starting and Power Accessories</h3> <p>Beyond battery charging, NewMar offers specialized power management solutions including <a href="/11280-newmar-remote-vehicle-starter-kit-14550">remote vehicle starter kits</a> designed for professional and recreational applications. These systems integrate with NewMar's broader power distribution ecosystem, providing seamless compatibility with battery integrators, DC converters, and power supplies.</p> <p>The brand's Battery Integrator products exemplify NewMar's engineering philosophy: intelligent solutions that solve real-world problems. These devices act as smart switches, connecting independent battery banks during charging while isolating them during discharge, allowing users to maintain separate house and engine-start batteries without voltage drop issues common to traditional diode isolators.</p> <h3>Built for Professional Applications</h3> <p>NewMar's commitment to quality has made their products the choice of professionals across multiple industries. From powering critical communications equipment in remote telecom sites to maintaining emergency vehicle battery systems in fire departments, NewMar products deliver when failure is not an option. The company's extensive product line includes DC power systems, inverter-chargers, UPS systems, and a full range of installation accessories, all backed by comprehensive warranties and technical support. Whether you're outfitting a commercial vessel, upgrading an emergency response fleet, or maintaining mission-critical equipment, NewMar provides the reliable DC power solutions that professionals demand.</p>

Part Number

NS-12-20
07/13/2036 6:10 AM
Sale Price

$295.63

1 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The NewMar NS-12-20 StartGuard is a battery backup power supply designed to protect sensitive marine and vehicle electronics from voltage drops during engine cranking. When engines start, the abrupt DC system voltage drop can cause microprocessor-driven electronics to dump programmed memory or reset unexpectedly. The StartGuard solves this problem by providing supplemental power to critical electronics while engines are cranking, ensuring uninterrupted operation of navigation systems, fishfinders, chartplotters, and other onboard electronics.

Key Features:

  • 20 amp maximum output capacity for powering multiple electronics
  • Sealed rechargeable 12 VDC, 4.0 amp-hour battery with 3-5 year typical lifespan
  • Provides 20 amps for one minute or 18 amps for two minutes when fully charged
  • Compact design mounts easily under dash or console with included hardware
  • Operates in temperatures from 0-40°C (32-104°F)
  • Relay activation input voltage range of 7-15 VDC

Technical Specifications:

  • Input Voltage: 13.8-14.8 VDC nominal, 15.5 VDC maximum
  • Output: 20 Amps maximum continuous
  • Backup Capacity: 20A for 1 minute / 18A for 2 minutes (fully charged)
  • Operating Temperature: 0-40°C (32-104°F)
  • Storage Temperature: -20°C to +40°C (-4°F to 104°F)
  • Dimensions: 8.25" L × 4.9" W × 3.5" H
  • Weight: 5.5 lbs

The StartGuard installs inline between the power source and protected electronics. Input power from the source must be routed through the unit to ensure seamless backup power delivery. The included mounting hardware allows secure installation in any convenient location aboard your vessel or vehicle.

Fast and easy

GREAT PRICE, FAST DELIVERY, WILL BUY FROM AGAIN.

Fast and easy

thanks for having such great prices

easy to find and order

Quick and easy

Simple fast &amp; easy. Thanks

easy to use website

Great product and half the price of any one else I've shopped would recommend this to everyone.

Pretty simple so far

Good price, easy to use website.

Great products, great prices, excellent communication!

Great prices and great communication!!

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy