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Balmar 9648100K8IG 48V 100A High-Output Marine Alternator with K8 Pulley Isolated Ground

Manufacturer

Balmar

<h3>About Balmar: Marine DC Power Since 1981</h3><p>Since its founding in 1981, <strong>Balmar</strong> has built a reputation as one of the most trusted names in marine DC power. For over four decades, the company has focused exclusively on helping sailors and power boaters solve one of the most persistent challenges on the water: keeping batteries charged reliably and efficiently. That singular focus has made Balmar the go-to choice for serious mariners who demand more from their electrical systems.</p><h3>Innovative Alternator Technology</h3><p>Balmar's greatest claim to fame is its lineup of <a href="/12782-balmar-alternators-200087">marine alternators</a> — widely regarded as the highest-output and most dependable alternators available in the recreational marine market. What sets Balmar apart is not just raw output, but smart engineering. Their patented <strong>Smart Ready&reg; Alternator</strong> technology allows the alternator to communicate directly with an external regulator, enabling precise, multi-stage charging profiles that protect batteries and extend their service life. Whether you're running a modest weekend sailboat or a fully outfitted bluewater passage-maker loaded with electronics, Balmar offers an <a href="/12782-balmar-alternator-2412">alternator</a> sized and engineered for the task.</p><p>Marine environments are uniquely demanding — salt air, vibration, and the need for long, uninterrupted charging cycles put far more stress on electrical components than typical automotive applications. Balmar designs its alternators specifically for these conditions, with robust construction and thermal management that keeps performance consistent even during extended motoring passages.</p><h3>Battery Monitors &amp; Charging System Management</h3><p>A high-output alternator is only part of the equation. Knowing the true state of your battery bank is equally critical, which is why Balmar also produces a respected line of <a href="/12782-balmar-battery-monitors-volt-meters-200146">battery monitors and volt meters</a>. These instruments give mariners accurate, real-time insight into battery voltage, state of charge, and current flow — the kind of data that prevents being stranded at anchor with a dead house bank. Balmar's monitoring products are designed to integrate seamlessly with their charging ecosystem, giving you a complete picture of your DC system's health at a glance.</p><h3>Expert Support &amp; a Legacy of Trust</h3><p>Beyond the products themselves, Balmar has long been recognized for its exceptional technical support. Marine electrical systems can be complex, and Balmar's knowledgeable team has a well-earned reputation for helping customers spec the right components and troubleshoot installations. That combination of innovative hardware and genuine expertise is a big reason why Balmar has remained a privately held, customer-focused company for over 40 years — and why the brand continues to be found aboard everything from coastal cruisers to offshore racing yachts.</p>

Part Number

9648100K8IG
09/12/2036 11:53 AM
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$2,062.56

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Product Details

The Balmar 96-Series alternator establishes a new standard for emerging 48V battery banks and inverter systems, delivering 4.8 kW of charging power at 100 amps. This isolated ground model features a large-frame design engineered specifically for mid-duty cycle marine applications where high-power 48V charging is essential.

Key Features:

  • 100 amp output at 48 volts providing 4.8 kW of charging power
  • J-180 4-inch dual foot saddle mounting configuration, typical for Caterpillar, Cummins, Detroit Diesel and John Deere engines
  • Isolated ground design for enhanced electrical system protection
  • K8 pulley configuration included
  • Low RPM cut-in at 2,200 RPM, making more power at lower engine speeds
  • High reliability bearings, robust rectifier diodes and improved heat-sinking capabilities
  • Sealed heavy-duty radial bearings (front and rear), ventilated cast aluminum construction
  • Weight: 19.8 pounds

When paired with the Balmar MC-620 regulator, this alternator combines the advantages of Balmar's legendary multi-stage regulation capability in a 48V charging system. 48V systems offer much more efficient components such as chargers and inverters, manageable cable sizes, and higher output alternators in reasonable package sizes. Lithium batteries can be charged at very high rates, making 48V systems cost-effective for high-power applications.

Important: This alternator must be used exclusively with the MC-620-H regulator with a 12V supply to the regulator. Isolated ground alternator installations require a dedicated cable connecting the alternator ground terminal to system ground.

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