Introduction
Thank you for choosing the Blissthrill 21V 4.0Ah Lithium Battery Pack, Model 5026-3. This battery is designed to provide reliable and long-lasting power for your Blissthrill cordless power tools, including cordless pressure washers. This manual provides essential information for the safe and efficient use, charging, and maintenance of your battery pack. Please read these instructions carefully before use and retain them for future reference.
Safety Information
Your Blissthrill battery pack is equipped with advanced protection systems to ensure safe operation. Adhering to these safety guidelines is crucial for preventing damage and ensuring user safety.
- Avoid Overheating: Do not expose the battery to direct sunlight, heat sources, or extreme temperatures.
- Prevent Overcharge: Use only the original Blissthrill charger or a compatible charger designed for this battery pack.
- Guard Against Over-voltage: Ensure the charger's voltage matches the battery's requirements.
- Protect from Short-circuits: Do not short-circuit the battery terminals. Keep metal objects away from the terminals.
- Proper Storage: Store the battery in a cool, dry place away from flammable materials when not in use.
- Disposal: Dispose of used batteries according to local regulations. Do not incinerate.

Product Overview
The Blissthrill 21V 4.0Ah Lithium Battery Pack is engineered for high performance and durability, offering extended working time and consistent power output for your cordless tools.
Key Features:
- Long-Lasting Power: 21V 4.0Ah (3000mAh, 5C discharge) capacity provides extended runtime and steady output, reducing charging frequency.
- Universal Compatibility: Seamlessly works with Blissthrill cordless power tools, including Cordless Pressure Washers, and fits original chargers.
- Easy Power Monitoring: Built-in LED charge indicator displays remaining battery power for effective task planning.
- Durable & Safe Design: Reinforced outer shell and advanced protection systems guard against overcharge, overheat, and short-circuit issues.
- High Energy Density: Optimized for longer runtime, fast charge/discharge cycles, and extended lifespan.


Setup and Compatibility
The Blissthrill 21V 4.0Ah Lithium Battery Pack is designed for easy integration with your existing Blissthrill 21V cordless tools.
Installation:
- Align the battery pack with the battery slot on your Blissthrill cordless tool.
- Slide the battery into the slot until it clicks securely into place. Ensure the quick release and secure lock mechanism engages.
- To remove, press the quick release button and slide the battery out.
This battery is specifically compatible with Blissthrill cordless power tools, including cordless pressure washers. It is not guaranteed to be compatible with tools from other brands.

Operation
Charging the Battery:
- Connect the Blissthrill charger to a standard 100-240V~50/60Hz power outlet.
- Slide the battery pack onto the charger. Ensure it is seated correctly.
- The charger's indicator light will show the charging status:
- Red Light: Charging in progress.
- Green Light: Charging completed.
- Once fully charged, remove the battery from the charger to prevent overcharging and prolong battery life.

Monitoring Battery Level:
The battery pack features a built-in LED charge indicator. Press the button next to the indicator lights to view the remaining power level. This allows you to plan your tasks effectively and avoid unexpected power loss.
Maintenance
Proper maintenance ensures the longevity and optimal performance of your Blissthrill battery pack.
- Cleaning: Keep the battery terminals clean and free from dust and debris. Use a dry cloth to wipe the battery pack.
- Storage: If storing the battery for an extended period, ensure it is partially charged (around 50-60%) and stored in a cool, dry place, away from direct sunlight and extreme temperatures.
- Avoid Deep Discharge: Do not allow the battery to fully discharge repeatedly, as this can reduce its overall lifespan.
- Regular Use: For best results, use and charge the battery regularly, even if not frequently used.
Troubleshooting
If you encounter issues with your battery pack, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not charging | Charger not plugged in; faulty outlet; battery not seated correctly; damaged charger/battery. | Check power connection; try a different outlet; re-seat battery; inspect charger/battery for damage. Contact support if issues persist. |
| Battery not powering tool | Battery discharged; battery not properly installed; tool malfunction; battery fault. | Charge battery fully; ensure battery is clicked into place; test battery with another compatible tool if possible; contact support. |
| Short runtime | Battery not fully charged; battery aging; extreme operating conditions. | Ensure full charge; consider battery replacement if significantly aged; operate within recommended temperature ranges. |
Specifications
Detailed technical specifications for the Blissthrill 21V 4.0Ah Lithium Battery Pack:
| Feature | Specification |
|---|---|
| Brand | Blissthrill |
| Model Number | 5026-3 |
| Battery Voltage | 21V |
| Battery Capacity | 4.0Ah (3000 Milliamp Hours) |
| Battery Cell Composition | Lithium Ion |
| Item Weight | 1.5 pounds |
| Package Dimensions | 5.67 x 4.25 x 3.35 inches |
| Recommended Uses | Cordless Pressure Washer, Blissthrill Cordless Power Tools |
| Number of Batteries | 1 Nonstandard Battery (included) |
Customer Support
Blissthrill is committed to providing responsive and dependable assistance for our cordless tool battery packs. Should you require support for setup, usage, or troubleshooting, our dedicated team is ready to provide guidance. Please refer to the contact information provided with your product or visit the official Blissthrill website for further assistance.