Fast and Slow Charging Modes
Different batteries have different charging requirements, which is why the PLXX provides selectable FAST and SLOW charging modes.
FAST mode is intended for larger compatible batteries when a higher charging rate is appropriate.
SLOW mode provides lower-rate charging suitable for smaller batteries and trickle-charging or maintenance applications.
The correct mode should always be selected according to battery capacity, chemistry, condition and the battery manufacturer’s specifications.
More amperage isn’t automatically better. Batteries, much like engines, tend to object when enthusiasm replaces specifications.
Battery Repair and Desulfation Mode
The PLXX also includes a battery repair/desulfation function intended for compatible weak, sulfated, stratified or long-idle lead-acid batteries that retain more than approximately 3 volts.
Lead-acid batteries that remain partially or fully discharged for extended periods can develop sulfation on their internal plates. The repair function is designed to provide a charging strategy intended to help recover some batteries affected by these conditions.
However, battery repair mode should not be confused with resurrection.
A charger cannot reliably restore a battery with physical plate damage, an internal short, severe capacity loss, a damaged case or another permanent internal failure. A battery that repeatedly loses its charge should be tested rather than repeatedly subjected to charging cycles.
If a vehicle continues experiencing starting problems after charging, our guide to rapid clicking when starting a car explains how battery condition, terminal resistance, cables, grounds and the starter circuit can produce very similar symptoms.
Automatic Shutoff Helps Prevent Overcharging
Once charging is complete, the PLXX charger incorporates automatic shutoff designed to prevent continued charging from overcharging the battery.
This makes the charger especially convenient for maintaining vehicles that may sit for extended periods, including:
- Classic and collector cars
- Project vehicles
- Motorcycles
- Boats
- RVs
- Seasonal equipment
- Lawn mowers
- Secondary vehicles
A charger can maintain battery state of charge, but it won’t correct an underlying electrical problem.
If the battery repeatedly becomes discharged after the vehicle sits, investigate the battery itself and check for charging-system problems or excessive parasitic draw. Likewise, an illuminated battery warning light can indicate considerably more than a weak battery; our guide explaining why a car’s battery light comes on covers alternator output, cables, grounds, belt-drive problems and charging-system diagnosis.
Winter Charging Mode
Cold temperatures create additional challenges for automotive batteries. Available battery output decreases while a cold engine may simultaneously require more current to crank.
The PLXX charger includes a dedicated Winter Mode intended to optimize charging performance during cold-weather conditions.
This can be particularly useful for vehicles stored in unheated garages or equipment that sees seasonal use.
Battery condition still matters. No charging mode can compensate indefinitely for a battery that has lost significant capacity with age.
LCD Charging Display
A built-in LCD display makes it easier to monitor charging status without guessing what the charger is doing.
Depending on operating mode, the display provides information including:
- Battery voltage
- Charging current
- Charging percentage
- Charging status
This allows users to monitor the charging process and identify basic battery conditions at a glance.
Heavy-Duty Construction
The PLXX charger is built around a pure-copper coil housed within a combination metal and ABS enclosure.
Its heavy-duty construction is intended for repeated garage, workshop and maintenance use while remaining portable enough to move between vehicles and equipment.
The charger is suitable for compatible batteries used in:
- Cars
- Pickup trucks
- Commercial-style trucks
- Motorcycles
- Boats and marine equipment
- RVs
- Lawn mowers
- Deep-cycle battery applications
Built-In Electrical Safety Protection
Battery charging involves significant electrical current and potentially hazardous battery chemistry, so protection features matter considerably more than fancy graphics on the case.
The PLXX incorporates protection against conditions including:
- Reverse polarity
- Short circuits
- Overcharging
- Overheating
- Over-voltage
- Over-current
These safeguards add protection during normal operation, but the charger should still be connected and operated according to its instructions and the battery manufacturer’s recommendations.
Never attempt to charge a battery that is frozen, cracked, leaking, smoking, severely swollen or otherwise physically damaged.
Diagnose the Electrical System Before Blaming the Battery
A battery charger is also useful during electrical diagnosis because beginning with a properly charged battery removes one major variable.
A vehicle may have a healthy battery but still crank slowly because resistance exists in a battery cable, terminal or ground connection. Simply measuring battery voltage may not expose that problem.
Our automotive voltage-drop testing guide explains how to test battery cables, grounds, starter circuits and charging-system connections while they are actually carrying current.
This distinction becomes important when a vehicle has electrical power but still won’t start. Headlights and accessories require considerably less current than a starter motor, so a compromised battery connection can operate the radio perfectly while the starter refuses to cooperate.
Electrolysis and 12V DC Power-Supply Capability
In addition to battery charging, the PLXX can be used as a 12V DC power source for suitable applications, including certain electrolysis-based rust-removal projects.
Electrolysis can be useful when restoring cast-iron and steel components because electrical current assists the rust-removal process while the part is submerged in an appropriate electrolyte solution.
Only use this function according to the charger’s instructions and proper electrolysis safety procedures. Electrolysis can produce gases, so adequate ventilation and appropriate electrical precautions are essential.
4Ah to 300Ah Battery Compatibility
The charger’s wide stated capacity range makes it useful for owners maintaining several different types of vehicles.
Compatible Battery Types
Voltage:
12V and 24V
Battery Capacity:
4Ah–300Ah
Battery Chemistry:
AGM, Gel, Wet/Flooded, EFB, Calcium, MF and Deep Cycle lead-acid batteries
Common Applications:
Cars, trucks, motorcycles, boats, marine equipment, RVs, lawn equipment and other compatible lead-acid battery systems
This charger is intended for compatible lead-acid battery technologies. Do not assume compatibility with lithium-ion, LiFePO4, hybrid/EV high-voltage traction batteries or other battery chemistries unless specifically approved by the manufacturer.
Key Features
- Automatic 12V/24V voltage detection
- Up to 15A charging current
- Supports 4Ah–300Ah lead-acid batteries
- Seven-stage smart charging
- FAST charging mode
- SLOW/trickle charging mode
- Battery repair/desulfation function
- Designed to recover certain weak or sulfated batteries above 3V
- Automatic shutoff after full charge
- Cold-weather Winter Mode
- LCD digital display
- Displays voltage, current and charge percentage
- Pure-copper internal coil
- Metal and ABS heavy-duty housing
- 12V DC power-supply capability
- Suitable for electrolysis/rust-removal applications
- Reverse-polarity protection
- Short-circuit protection
- Overcharge protection
- Overheat protection
- Over-voltage protection
- Over-current protection
- Three-year stated warranty
A Versatile Charger for the Home Garage
The PLXX 12V/24V 0–15A Automatic Battery Charger provides considerably more flexibility than a basic trickle charger.
With support for batteries ranging from 4Ah to 300Ah, multiple lead-acid battery chemistries, automatic charging, selectable charging rates, repair functionality and cold-weather operation, it can handle many of the battery-maintenance jobs encountered in a home garage or workshop.
It’s especially useful for enthusiasts maintaining multiple vehicles or anything that spends enough time parked to consider a dead battery part of its personality.
Keep the battery charged, verify its actual condition periodically and diagnose recurring discharge problems rather than assuming another night on the charger is a permanent repair.
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