Clore Automotive 4520 Battery Charger: Smart 12V Charging for Everyday and Heavy-Duty Use

The clore automotive 4520 Battery Charger is a fully automatic 12-volt smart charger designed to recharge and maintain common lead-acid batteries with minimal user input. It offers three charging rates—20 amp, 10 amp, and 2 amp—making it useful for everything from quick recovery charging to slower maintenance charging. The unit also includes a 7-segment LED display, smart clamp technology, and reverse polarity protection, which helps reduce hookup mistakes and improve everyday safety. The charger weighs 4.0 lbs and comes with a 1-year limited warranty.

This model is a strong fit for car owners, DIY mechanics, fleet users, marine users, and anyone who needs a dependable 12V battery charger for conventional flooded, AGM, gel cell, deep-cycle, and marine lead-acid batteries. Because it is automatic, it is especially helpful for users who want a charger that can monitor the battery and adjust output without constant supervision. The clore automotive 4520 Battery Charger is commonly positioned as a practical mid-range smart charger rather than a premium multi-voltage workshop unit.

Estimated pricing typically falls in the mid-range retail bracket for 12V smart chargers, often around $50 to $100 depending on seller, stock, and shipping. Availability is generally best through automotive tool retailers, parts stores, and online marketplaces, though stock can vary by region and season.

Specifications for Clore Automotive 4520 Battery Charger

Operating voltage: 12V only
Charge rates: 20A, 10A, and 2A
Charging mode: Fully automatic
Display: 7-segment LED
Safety features: Smart clamp technology and polarity protection
Battery compatibility: Conventional flooded, AGM, gel cell, deep-cycle, spiral-wound, and marine lead-acid batteries
Weight: 4.0 lbs
Warranty: 1-year limited
UPC: 010271023547

Performance-wise, the 20A setting is best for faster charging, while 10A provides a balanced middle option and 2A works well for smaller batteries or maintenance-style charging. Compared with smaller 2A or 6A battery maintainers, the 4520 offers much faster recovery for weak batteries. Compared with higher-end shop chargers, it is simpler and less feature-rich, but easier to use for home and garage charging.

How to Set Up the Clore Automotive 4520 Battery Charger

To begin using the clore automotive 4520 Battery Charger, place the charger in a dry, ventilated area away from sparks, flames, and moving engine parts. Confirm the battery is a 12V lead-acid type and inspect terminals for corrosion before connecting. Attach the red clamp to the positive terminal and the black clamp to the negative terminal or chassis ground if the battery is installed in a vehicle.

After the clamps are secure, plug the charger into a standard AC outlet. The charger is automatic, so it begins charging once power is applied and the battery is connected correctly. Select the appropriate charge rate based on battery size and condition: 20A for faster charging, 10A for moderate charging, or 2A for low-rate charging and maintenance. If the battery type selection is available through the mode controls, choose the correct chemistry before starting.

If the charger does not start, check clamp polarity, outlet power, and battery voltage. Reverse connection protection should prevent damage, but incorrect hookup will stop charging. Always disconnect AC power first, then remove the clamps in reverse order. Never charge a frozen, visibly damaged, or leaking battery.

Troubleshooting the Clore Automotive 4520 Battery Charger

If the charger will not begin charging, the most common causes are incorrect clamp placement, poor terminal contact, or no AC power. Clean the battery posts, reseat the clamps, and verify the wall outlet is active. If the LED indicates a fault or error condition, disconnect power, correct the connection issue, and restart the charger.

Reverse polarity is another frequent problem. The unit includes polarity protection, so reversed clamps should stop charging instead of damaging the battery. If the battery seems to charge slowly, use a higher amperage setting when appropriate, or test whether the battery itself is sulfated or near end of life. A battery that will not hold charge after repeated attempts may need replacement rather than more charging.

Preventive maintenance includes wiping clamps clean after use, storing the charger in a dry location, and checking cables for wear. The product has a 1-year limited warranty. For technical support, Clore Automotive lists service contact numbers at 800-328-2921 and 913-310-1050.

Pros and Cons of the Clore Automotive 4520 Battery Charger

Pros

Versatile charging speeds: 20A, 10A, and 2A settings suit different battery conditions.
Automatic operation: Reduces the need for constant monitoring.
Good battery compatibility: Works with standard, AGM, gel, deep-cycle, and marine lead-acid batteries.
Safety-focused design: Includes smart clamp technology and polarity protection.
Solid value for money: Offers useful smart-charger features without the cost of premium shop systems.

Cons

12V only: Not suitable for 6V systems.
Basic display: The 7-segment LED is functional but not highly detailed.
No advanced workshop features: Lacks the broader diagnostics and multi-voltage support of higher-end chargers.
Limited warranty period: One year is shorter than some competitors.

Compared with compact maintainers, the 4520 offers stronger charging performance. Compared with premium smart chargers, it is simpler, but that simplicity can be an advantage for users who want a straightforward 12V battery charger.

Customer Reviews of the Clore Automotive 4520 Battery Charger

Customer feedback for the clore automotive 4520 Battery Charger is generally positive, with many users giving it around 4 to 4.5 stars out of 5 for performance and ease of use. Buyers often praise the multiple charge rates, automatic operation, and reliable charging on AGM and flooded batteries. One common testimonial style comment is that it is “simple to connect and does the job without fuss.”

Common complaints usually focus on the charger’s basic display, lack of 6V support, and the fact that it is not intended as a professional diagnostic tool. Some users also mention that a badly sulfated battery may not recover fully, which is normal for a charger in this class. Most customers recommend it for home garages, seasonal vehicles, and general battery maintenance rather than advanced workshop use.

If you want a practical, easy-to-use smart charger for 12V batteries, the clore automotive 4520 Battery Charger is often considered a dependable buy for the price.

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