The alternator I bought from you doesn't work.

Each alternator is bench-tested before shipping. Apparent failure is usually due to ordering the wrong unit, shipping damage, or installation mistakes. Verify the part number, inspect for damage, and review the proper installation steps (Technical Tip TT-648) before contacting support.

The alternator I bought from you doesn't "put out".

Low-output symptoms are often caused by factors outside the alternator. Measure voltage directly at the rear of the unit with a digital meter; if readings seem low, check the common issues listed below or return the alternator for a free bench test.

High-output alternators ship with an overdrive pulley that may require a belt about 1 inch shorter than stock. Use a quality, oil-free belt to prevent slip and ensure full output.

Regulator plug not plugged in, not seated properly or pinched wire

Make sure the small regulator plug on the alternator is fully seated and oriented correctly. A pinched or missing connection will prevent charging. Self-exciting models (e.g., Fitzall 220A+) do not use this plug.

Battery warning light bulb in dash missing, blown or bad connection

Some vehicles rely on the dash battery-warning bulb to excite the alternator. A blown, missing, or poorly connected bulb can cause a no-charge condition.

Customer changed alternator pulley

Replacing the supplied overdrive pulley with a larger-diameter pulley slows the alternator and decreases charge output.

Vehicle crankshaft pulley diameter too small

Aftermarket under-drive crank pulleys spin accessories more slowly and can severely reduce alternator output. Ensure the crank pulley is at least OEM size.

Main vehicle charge wire too small or not upgraded

Factory charge wiring is sized for OE amperage. When loads rise, upgrade to a heavier-gauge cable such as the Big Zero kit to avoid voltage drop and false low-output symptoms.

Too many grounds, insufficient grounds, or just bad wiring

Improper, corroded, or excessive grounds-as well as undersized or poorly crimped wires-can cripple alternator performance. Have a qualified technician inspect and correct wiring.

Bad, old, weak, damaged or cheap battery

Weak or inexpensive batteries-especially some gel-cell types-may not accept the alternator's current. Use a healthy wet-cell battery with sufficient cold-cranking amps.

Alternator possibly damaged during installation

High-output units contain sensitive electronics. Skipping the recommended battery-disconnect procedure or other steps in Technical Tip TT-648 can damage the regulator and cause no-charge conditions.

The alternator I bought from you doesn't fit.

Direct-fit models require no hardware changes. Universal Fitzall 220A+ units need custom brackets and may require a shorter belt.

Do you sell brackets, spacers or hardware to mount the Fitzall on my particular application?

Due to the vast number of vehicles, PowerBastards does not supply custom mounting hardware. Most customers fabricate brackets themselves or hire a qualified shop.

I tested my alternator and it only makes 30A.

Alternators supply only the amperage the system demands. Clip-on amp meters can be inaccurate; 30 amps may be normal at low load. Send the unit in for a free certified output test if in doubt.

High Output Alternators

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High Output Alternators for Jeep

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At PowerBastards, we know Jeep owners demand more than just a basic ride — they crave adventure, power, and unstoppable reliability. That's why our High Output Alternators for Jeep are designed to keep up with even the most extreme off-road challenges and heavy-duty electrical needs.

Why Choose High-Output Alternators for Jeep?

A High Output Alternator for Jeep isn't just a luxury — it's a must-have for drivers running extra lights, winches, heavy-duty sound systems, or any other power-hungry accessories. Factory alternators often fall short when you're deep in the trails or relying on your equipment in remote areas. Our alternators are designed to deliver maximum output without compromise, giving you the confidence to tackle any adventure without electrical worries.

Built for Off-Road Demands

Jeeps are built to push limits, and so are our alternators. Each Jeep high amp alternator is engineered to handle the harshest off-road environments, from rocky mountain trails to muddy backwoods. They provide a steady, strong current that prevents your battery from draining, even when all accessories are running at full blast.

Whether you're crawling at low speeds with a winch or lighting up the night with powerful off-road lamps, a high amperage alternator for Jeep keeps everything running smoothly. Our alternators are tested to perform in real-world conditions, giving you dependable power wherever the trail takes you.

Effortless Installation and Reliable Performance

We believe an upgrade should enhance your experience, not complicate it. That's why each Jeep alternator upgrade is designed as a direct-fit replacement for your stock unit. You won't have to wrestle with major modifications — just bolt it in, plug it up, and hit the road (or trail).

With robust construction and top-grade materials, our Jeep performance alternator outperforms and outlasts standard options. Each unit undergoes strict testing to ensure flawless performance, so you can count on your electrical system even during intense adventures.

Protect Your Investment

Modern Jeeps rely on complex electronic systems. Upgrading to a heavy-duty alternator, Jeep not only powers your gear but also helps protect sensitive onboard electronics from voltage drops and electrical failures. It's a smart investment that helps avoid costly repairs and ensures your rig stays ready for anything.

When you choose an aftermarket alternator Jeep from PowerBastards, you're adding a layer of security and confidence to every journey. You'll notice improved battery health, smoother operation of accessories, and overall better system performance.

Compatible with Popular Jeep Models

Our collection includes options for top Jeep models, including:

Each alternator is tailored for optimal compatibility and performance. Explore our model-specific pages to find the perfect High Output Alternator for your Jeep that matches your build and driving style.

Take Your Jeep Further with PowerBastards

When you demand the best from your Jeep, don't settle for factory limitations. Equip your ride with a Jeep high-amp alternator and unlock the full potential of your electrical system. Our commitment to quality, durability, and real-world performance means you'll be ready to power through any obstacle with confidence.

Upgrade today and make every adventure brighter, bolder, and more reliable. Discover why Jeep enthusiasts everywhere trust PowerBastards for the most dependable High Output Alternators for Jeep.