1. Introduction
Thank you for choosing the ElectroPrime 21V Cordless Hammer Drill. This powerful and versatile tool is designed for a wide range of drilling and screwdriving tasks in various materials. With its robust 65Nm torque, two 2500mAh batteries, and 25+3 torque settings, it offers precision and efficiency for both professional and DIY projects. Please read this manual carefully before operating the tool to ensure safe and optimal performance.
2. Safety Instructions
Always follow basic safety precautions when using electric tools to reduce the risk of fire, electric shock, and personal injury. Keep this manual for future reference.
General Power Tool Safety Warnings:
- Work Area Safety: Keep the work area clean and well-lit. Cluttered or dark areas invite accidents. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Power tools create sparks which may ignite the dust or fumes. Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
- Electrical Safety: Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock. Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
- Personal Safety: Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury. Use personal protective equipment. Always wear eye protection. Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.
- Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed. Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired. Disconnect the plug from the power source and/or remove the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
- Battery Tool Use and Care: Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack. Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
3. Package Contents
Your ElectroPrime 21V Cordless Hammer Drill kit includes the following items:
- 1 x ElectroPrime 21V Cordless Hammer Drill
- 2 x 2500mAh Lithium-Ion Batteries
- 1 x Battery Charger
- 1 x Set of Drill Accessories (24 pieces including various drill bits, screwdriver bits, and sockets)
- 1 x Flexible Shaft Extension
- 1 x Carrying Bag
- 1 x User Manual

Figure 3.1: Complete kit contents including the drill, batteries, charger, and 24 accessories.
4. Setup
4.1. Battery Installation and Charging
- Charge Batteries: Before first use, fully charge both 2500mAh batteries using the provided charger. Connect the charger to a power outlet and insert the battery. The indicator light on the charger will show charging status.
- Install Battery: Align the battery pack with the base of the drill handle. Slide the battery into place until it clicks securely. To remove, press the release buttons on the sides of the battery and slide it out.

Figure 4.1: Proper battery attachment to the drill for secure operation.
4.2. Bit Installation
- Open Chuck: Rotate the chuck counter-clockwise until the jaws are wide enough to insert the desired drill bit or screwdriver bit.
- Insert Bit: Insert the shank of the bit into the chuck as far as it will go.
- Tighten Chuck: Rotate the chuck clockwise to tighten the jaws firmly around the bit. Ensure the bit is centered and secure to prevent slippage during operation.
Video 4.1: Demonstrates the unboxing, battery installation, and bit changing process for the drill.
5. Operating Instructions
5.1. Speed Settings
The drill features two variable speed settings, controlled by a switch on the top of the tool:
- Speed 1 (Low): Ideal for screwdriving, loosening screws, and drilling large diameter holes. Provides higher torque and slower rotation.
- Speed 2 (High): Suitable for powerful drilling and tasks requiring faster rotation.

Figure 5.1: The two-speed control switch allows selection between low speed for high torque and high speed for faster drilling.
5.2. Torque Adjustment
The torque collar allows you to select from 25+3 torque settings, preventing overtightening and damage to materials or fasteners. Rotate the collar to the desired setting. The 'T' setting is for drilling, and the hammer icon is for impact drilling.
5.3. Operating Modes
The drill offers three main operating modes:
- Screwdriver Mode: Use for driving and removing screws. Adjust torque as needed.
- Drill Mode: For drilling holes in wood, plastic, and metal. Use appropriate drill bits.
- Hammer Drill Mode: For drilling into masonry, brick, and concrete. This mode provides an impact action for harder materials.

Figure 5.2: The drill offers three modes for various materials: screwdriver, drill, and hammer drill.
5.4. Forward/Reverse Rotation
A switch located above the trigger controls the direction of rotation. Push left for forward (driving) and right for reverse (removing). The center position locks the trigger for safety.
5.5. LED Work Light
The integrated LED light illuminates the work area when the trigger is pressed, improving visibility in dimly lit spaces.

Figure 5.3: Detailed view of the drill's operational controls, including the LED light for improved visibility.
5.6. Using the Flexible Shaft Extension
For hard-to-reach areas or awkward angles, attach the flexible shaft extension to the chuck. This accessory allows you to maintain a comfortable grip on the drill while reaching fasteners in confined spaces.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your ElectroPrime drill.
- Cleaning: Keep the tool's ventilation openings clean to prevent overheating. Use a soft, damp cloth to wipe down the exterior. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the drill and accessories in the provided carrying bag in a dry, secure place, away from direct sunlight and extreme temperatures.
- Battery Care: Store batteries in a cool, dry place. Do not store fully discharged batteries for extended periods. Recharge them periodically if not in use.
7. Troubleshooting
If you encounter issues with your drill, refer to the following common troubleshooting steps:
- Drill not starting: Ensure the battery is fully charged and securely attached. Check the forward/reverse switch is not in the center (locked) position.
- Loss of power during operation: The battery may be low. Replace with a charged battery or recharge the current one.
- Bit slipping in chuck: Ensure the chuck is tightened firmly around the bit. Check if the bit shank is damaged or worn.
- Overheating: Allow the tool to cool down. Ensure ventilation slots are clear. Avoid continuous heavy-duty use without breaks.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | PB-002 |
| Voltage | 21V |
| Battery Capacity | 2500 mAh (x2 included) |
| Max Torque | 65 Nm |
| Torque Settings | 25 + 3 |
| Speed Settings | 2 Variable Speeds |
| Chuck Type | Keyless |
| Drill Type | Hammer Drill |
| Product Dimensions | 27 x 10.5 x 25 cm |
9. Warranty and Support
ElectroPrime products are manufactured to the highest quality standards. For warranty information, technical support, or service inquiries, please refer to the contact details provided on your purchase receipt or visit the official ElectroPrime website. Keep your proof of purchase for any warranty claims.