Product Overview
The STANLEY BC15BS is a fully automatic 15 Amp 12V Bench Battery Charger/Maintainer designed for various vehicle and battery types. It features a 40A engine start function, alternator check, and battery reconditioning capabilities to optimize battery life and performance.

Front view of the STANLEY BC15BS Battery Charger/Maintainer, showing the digital display and control buttons, along with the red and black battery clamps.
Key Features:
- Automatically selects charge rate to maximize battery life.
- 40A patented engine start helps to start vehicle in approximately 90 seconds.
- Alternator check to indicate potential alternator issues.
- Battery reconditioner determines viability of battery to accept a charge. If battery is not in optimal condition battery reconditioner function automatically switches on to reverse sulfate build-up on battery plates to improve charging carrying capability and extend battery life.
- LCD screen with easy-to-read icons.

Visual representation of the charger's core functionalities including maintenance, rapid charging, engine start, smart charging, battery compatibility, and voltage check.
What's in the Box
Your STANLEY BC15BS package includes the following components:
- 15-amp Battery Charger/Maintainer with 40-amp Engine Start

The image displays the main unit of the STANLEY battery charger along with its durable metal powder coated clamps, which are included in the product packaging.
Setup Instructions
Before operating the charger, ensure you read and understand all safety warnings and instructions. Proper setup is crucial for safe and effective use.
- Placement: Place the charger on a stable, flat surface. The unit is designed to be lightweight and user-friendly.
- Ventilation: Ensure adequate ventilation around the charger. Do not block the ventilation openings.
- Connect to Battery: Connect the red positive (+) clamp to the positive battery terminal and the black negative (-) clamp to the negative battery terminal. For vehicles, connect the negative clamp to the vehicle chassis away from the battery. Ensure connections are solid.
- Power Connection: Plug the charger's AC power cord into a standard 120V AC outlet. The LCD screen will illuminate, indicating the unit is powered on.

The image shows the STANLEY battery charger connected to a standard AC wall outlet, ready for operation.
Operating Instructions
The STANLEY BC15BS features an intuitive LCD screen and dedicated buttons for various functions. The unit automatically detects battery voltage and type.

A detailed view of the charger's LCD screen, which displays charging status and other relevant information.
Charging a Battery:
- Ensure the charger is properly connected to the battery and plugged into an AC outlet.
- Press the 'Charge' button. The unit will automatically select the optimal charge rate (3A for maintain, 15A for rapid charge) and begin charging. The LCD screen will display the charging status.
- The charger will automatically switch to float mode (FLO) once the battery is fully charged to maintain its charge without overcharging.
Engine Start Function (40A):
- Connect the charger to the vehicle battery as described in the Setup section.
- Press the 'Engine Start' button. The charger will provide a 40A boost to assist in starting the vehicle. This function is designed to help start a vehicle in approximately 90 seconds.
Alternator Check:
- With the charger connected to the battery, press the 'Alternator Check' button. The unit will analyze the vehicle's alternator to indicate potential issues with its charging capability.
Battery Voltage Check:
- Press the 'Battery Voltage' button to display the current voltage of the connected battery on the LCD screen.
Battery Recondition:
- If the battery is not in optimal condition, the 'Battery Recond' function can be activated. This mode automatically works to reverse sulfate build-up on battery plates, improving charging capability and extending battery life.
Estimated Charging Times:
The following chart provides estimated charging times for various battery capacities using the BC15BS charger:

This chart illustrates the approximate charging durations for different types of vehicles and battery capacities when using the STANLEY BC15BS charger.
| Vehicle/Battery Type | Estimated Charging Time |
|---|---|
| Motorcycle (18Ah) | 1.2 Hours |
| Snowmobile (20Ah) | 1.3 Hours |
| ATV (30Ah) | 2 Hours |
| Personal Watercraft (30Ah) | 2 Hours |
| Lawnmower (40Ah) | 2.6 Hours |
| Compact Car (50Ah) | 3.3 Hours |
| Mid-size Car (60Ah) | 4 Hours |
| Full-Size Car (80Ah) | 5.3 Hours |
| Marine (80Ah) | 5.3 Hours |
| SUV (90Ah) | 6 Hours |
| Truck (100Ah) | 6.5 Hours |
| RV (100Ah) | 6.5 Hours |
| Diesel Truck (120Ah) | 8 Hours |
Maintenance
Regular maintenance ensures the longevity and optimal performance of your battery charger.
- Cleaning: Disconnect the charger from power and the battery before cleaning. Wipe the case and cables with a damp cloth. Do not use solvents or abrasive cleaners.
- Clamp Care: Keep the battery clamps clean and free of corrosion. After each use, wipe any battery acid or dirt from the clamps.
- Cable Inspection: Periodically inspect the AC power cord and battery cables for any damage, cuts, or fraying. Do not use the charger if cables are damaged.
- Storage: Store the charger in a cool, dry place when not in use. Ensure cables are neatly coiled to prevent damage.
Troubleshooting
If you encounter issues with your STANLEY BC15BS charger, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger does not turn on/LCD screen is blank. | No AC power; Faulty outlet. | Check AC power connection. Try a different outlet. Ensure the charger is securely plugged in. |
| Charger displays an error or does not charge. | Poor battery connection; Battery is severely discharged (below 2V); Battery is defective. | Ensure battery clamps have a solid connection to battery terminals. If battery voltage is too low, try a manual charge or recondition if available. Test battery with a voltmeter to confirm viability. |
| Engine Start function does not work. | Insufficient battery voltage; Overload protection activated. | Ensure battery has at least 2V. Allow charger to cool down if it has been in continuous use. Verify proper connections. |
| Charger goes into 'FLO' mode immediately. | Battery is already fully charged; Poor connection. | Verify battery charge level. Re-establish solid connections between clamps and battery terminals. |
If the problem persists after attempting these solutions, please contact customer support.
Specifications
Detailed specifications for the STANLEY BC15BS Battery Charger/Maintainer:
- Model Number: BC15BS
- Product Dimensions: 12.38 x 5.75 x 9.75 inches (5.75"D x 12.38"W x 9.75"H)
- Item Weight: 6.67 pounds
- Output Voltage: 12 Volts (DC)
- Manufacturer: Baccus Global LLC
- Country of Origin: China
- Color: Red, Black
- Specification Met: ETL
- Date First Available: July 27, 2015

This image provides a visual representation of the product's dimensions (10.8 inches length, 9 inches height, 5.3 inches depth) and its weight (6.2 lbs).
Warranty and Support
The STANLEY BC15BS Battery Charger/Maintainer comes with a limited warranty.
Warranty Information:
This product is covered by a 1-Year Limited Warranty.

The image displays the official STANLEY 1 Year Limited Warranty logo, indicating the product's warranty coverage.
Additional Protection Plans:
Extended protection plans may be available for purchase:
- 2-Year Protection Plan
- 3-Year Protection Plan
- Complete Protect (monthly plan covering eligible purchases)
User Guide (PDF):
For a comprehensive guide, you can download the official User Guide in PDF format: Download User Guide
Customer Support:
For further assistance, technical support, or warranty claims, please refer to the contact information provided with your product packaging or visit the official STANLEY website.