1. Product Overview
The Dlyfull B2 Black Battery Tester and B4 Universal Battery Tester are designed to accurately assess the health and remaining charge of a wide variety of battery types. This manual provides comprehensive instructions for the safe and effective use of both devices, ensuring optimal performance and longevity.
Image: Dlyfull B2 Black and B4 Universal Battery Testers shown with included AAA batteries.
2. Safety Information
- Always handle batteries with care. Do not short-circuit batteries.
- Do not attempt to test damaged or leaking batteries.
- Ensure correct polarity when inserting batteries into the testers. Incorrect polarity can damage the device or the battery.
- The Dlyfull B2 tester is not powered by rechargeable batteries and should not be used to test rechargeable batteries.
- Keep the testers away from water, high temperatures, and direct sunlight.
- This product is not a toy. Keep out of reach of children.
3. Package Contents
Upon opening your package, please verify that all the following items are included:
- 1 x Dlyfull B2 Black Battery Tester
- 1 x Dlyfull B4 Universal Battery Health Tester & Checker
- 3 x Alkaline 1.5V AAA Batteries
- 1 x Welcome Guide (this manual)
4. Setup
4.1. Dlyfull B4 Universal Battery Tester Battery Installation
The Dlyfull B4 tester requires 3 AAA batteries for operation (included). The Dlyfull B2 tester does not require internal batteries for testing.
- Locate the battery compartment on the back of the Dlyfull B4 tester.
- Slide open the battery compartment cover.
- Insert 3 AAA batteries, ensuring correct polarity (+ and -) as indicated inside the compartment.
- Close the battery compartment cover securely.
Image: The Dlyfull B4 tester's smart LCD display and the battery compartment for AAA batteries.
5. Operating Instructions
5.1. Dlyfull B4 Universal Battery Tester Operation
The B4 tester features a sophisticated LCD display that shows battery voltage and level. The battery level is presented as a percentage and a battery level bar.
Image: Demonstrations of testing various battery types using the Dlyfull B4 tester, including cylindrical, 9V, and button cell batteries.
Testing Procedure for B4:
- Identify the correct slot or contact point for your battery type on the B4 tester. The tester supports 12 battery types including 1.2V Ni-MH, 1.45V Zinc Air, 1.5V Alkaline, 3.0V Lithium Manganese, 3.2V LiFePO4, 3.7V Li-ion, 6.0V, 9.0V, and 12.0V Alkaline packs. It supports AAA, AA, C, SC, D, N sizes, button cells, CR123A, CR-V3, 2CR5, 23A, 27A, and more.
- Insert the battery, ensuring correct polarity. The tester is equipped with polarity markings for easy and accurate insertion.
- The LCD display will automatically show the voltage and remaining battery level.
Image: The Dlyfull B4 tester highlighting its polarity guidance indicators for correct battery insertion.
5.2. Dlyfull B2 Black Battery Tester Operation
The B2 tester provides quick results using a bar display to indicate battery health (Poor, Weak, Good).
Image: The Dlyfull B2 tester's easy-to-read LCD screen, displaying battery health categories: Poor, Weak, and Good.
Testing Procedure for B2:
- Identify the appropriate slot or contact point for your battery type on the B2 tester. It is suitable for AA, AAA, C, CR123A, D, 9V, N, CR2, CRV3, 2CR5, CR-P2 cylindrical battery testing, and various button cell batteries.
- Place the battery into the designated slot or make contact with the probes.
- The display will quickly show the status of your battery's health using the bar indicators.
Image: Examples of testing different battery types (9V, button cell, cylindrical) using the Dlyfull B2 tester.
6. Maintenance
- Clean the testers regularly with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Ensure the battery contacts are free from dirt or corrosion for accurate readings.
- When not in use for extended periods, remove the AAA batteries from the Dlyfull B4 tester to prevent leakage.
- Store the testers in a cool, dry place, away from extreme temperatures and humidity.
7. Troubleshooting
7.1. Dlyfull B4 Tester: No Display or Faint Display
- Check if the AAA batteries are inserted correctly with the right polarity.
- Replace the AAA batteries with new ones if they are depleted.
- Ensure the battery compartment cover is securely closed.
7.2. Inaccurate Readings
- Ensure the battery being tested is clean and free of corrosion on its terminals.
- Verify that the battery is correctly seated in the tester's slot or that the probes make firm contact.
- Confirm that you are using the correct testing method/slot for the specific battery type.
- Remember that the B2 tester is not designed for rechargeable batteries.
7.3. Tester Not Responding
- For the B4 tester, try removing and reinserting the AAA batteries.
- If the issue persists, contact DLYFULL customer service.
8. Specifications
8.1. Dlyfull B2 Black Battery Tester
- Compatibility: AA, AAA, C, CR123A, D, 9V, N, CR2, CRV3, 2CR5, CR-P2 cylindrical batteries, and various button cell batteries.
- Display: Bar indicators (Poor, Weak, Good).
- Power Source: Battery under test (does not require internal batteries for testing).
8.2. Dlyfull B4 Universal Battery Tester
- Compatibility: 12 battery types including 1.2V Ni-MH, 1.45V Zinc Air, 1.5V Alkaline, 3.0V Lithium Manganese, 3.2V LiFePO4, 3.7V Li-ion, 6.0V, 9.0V, and 12.0V Alkaline packs. Supports AAA, AA, C, SC, D, N sizes, button cells, CR123A, CR-V3, 2CR5, 23A, 27A, and more.
- Display: Smart LCD display showing voltage and battery level (percentage and bar).
- Power Source: 3 x AAA Alkaline batteries (included).
8.3. General Specifications
- Brand: DLYFULL
- Color: Black
- Measurement Type: Voltmeter
9. Warranty and Support
DLYFULL provides an 18-Month Warranty for your Dlyfull B2 Black and B4 Universal Battery Testers. We also offer Lifetime 24-Hour Friendly Customer Service.
For any questions, technical support, or warranty claims, please contact DLYFULL customer service through the retailer's platform or visit the official DLYFULL website for contact information.
