Charging systems vary by type of boat, as well as a collection of other variables including engine type, engine room space, belt type and size, battery bank size and battery chemistry. Our aftermarket parts supplier Sierra offers alternators for most common marine engines.
Go to our Engine Parts Selector to find the alternator you need. They need to be charged by a large case or extra large case alternator to produce enough charging current, due to their nearly unlimited appetite for amps. Mounting Style Mounting styles for Balmar 6-Series alternators Compatibility depends on engine model, engine year, engine compartment layout and other factors.
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Here at West Marine we often see customers looking for an alternator for two reasons. Your alternator should be capable of delivering rated output equal to the maximum acceptance rate of your house battery bank. See the following chart, and note that dual vee-belts and serpentine belts can support macon duo escorts larger lo.
Otherwise, your system will be plagued by premature belt wear, belt detroih and potential damage to your alternator and engine.
To maximize charging efficiency, a amp rated alternator would be required. What to Consider Before You Buy Before you invest in a high-output charging system, save yourself a lot of trouble and dollars by ensuring that you buy the correct system for your application.
Inspect your existing alternator mount and compare to the diagrams shown to determine the appropriate high-output replacement. Detrkit Acceptance Rate of the battery—what percentage of its total amp hour capacity it can accept—is different for some battery chemistries.
Automotive-style alternatorslike this amp Delco-style three-wire model from Sierra, are internally regulated. A standard flooded battery, of either the starting or deep cycle type, can accept charging current equal to 25 percent of its available capacity. We start shopping for bigger battery banks or consider adding a battery which requires us to take a look at our charging system.
You may need spacers or modifications to brackets, tensioners and wiring on any high-output alternator installation. Gel batteries can accept 30 percent, AGM batteries can accept 40 to 50 percent, and riley reid escort technologies like lithium ion or TPPL thin plate pure lead, such as Optima lookng accept even more.
Most alternators fall into one of four mounting styles: Single 1" foot spindle mount Motorola style; Balmar Model detroiit Commonly-installed vee-belts and multi-groove serpentine belts have specific limits regarding the amperage and horsepower lo they can support. Belt Type.
Good news! High output alternators like this extra Large Ror Balmar Series Alternator delivers current similar to some gensets, with up to 5kW of output.
So, when selecting a new alternator, you need to size it for the limits of the capacity of its drive belt. This article will help you make the right choices when shopping for a high-capacity alternator, such as one of the models from Balmar—boating's premier manufacturer of marine alternators and charging system upgrades. If your house bank consists of Ah capacity AGM batteries, the maximum available capacity would be 45 percent ofor roughly Ah.
Unfortunately, mounting a large-case alternator is not feasible in many vessels. As a rule of thumb, volt alternators use one horsepower for every 25 amps of output, or to put it another way, their ratio of output to horsepower load is Single 2" foot spindle mount Delco style; Balmar Model with included spacer.
Selection criteria you should consider include the following. Battery Capacity As we add electrical and electronic appliances to our boats, our battery banks become incapable of handling the lo created by these new stereo subwoofers, floodlights, satellite TV systems, refrigerators and other thirsty power consumers.
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In other words, if your house battery bank is made up of flooded batteries with an amp-hour capacity rating of Ah, the maximum acceptance rate of those batteries would be 25 percent, or amps, the ideal alternator would also be rated at amps. For flooded batteries, size your alternator toward the bottom of this range. Belt Load Limitations Drive belt width is a critical factor in selecting a sf alternator.