1. Introduction
Thank you for choosing the HERISKEER 42V 2A/1.5A Charger. This charger is designed to provide efficient and safe charging for 36V lithium battery packs commonly found in electric bikes and scooters. Please read this manual thoroughly before use to ensure proper operation and to maximize the lifespan of your charger and battery.

Image: The HERISKEER 42V 2A/1.5A charger, showing the main unit, AC power cord, and DC output cable with a barrel connector.
2. Important Safety Information
Failure to follow these safety instructions may result in electric shock, fire, or serious injury.
- Compatibility Check: Before connecting, verify that your device requires a 42V charger for a 36V lithium battery pack and has a 5.5mm barrel connector. This charger is not compatible with 48V or 24V batteries.
- Lithium Batteries Only: This charger is specifically designed for lithium-ion batteries. Attempting to charge other battery types (e.g., Sealed Lead Acid) may damage the charger, the battery, or both.
- Indoor Use Only: The charger is intended for indoor use in dry conditions. Do not expose it to rain, moisture, or extreme temperatures.
- Ventilation: Ensure adequate ventilation around the charger during operation. Do not cover the charger.
- Damage Inspection: Do not use the charger if the cables, plug, or casing are damaged. Contact the manufacturer for assistance.
- No User Serviceable Parts: Do not attempt to open or repair the charger. It contains no user-serviceable parts. Repairs should only be performed by trained service personnel.
- Protection Features: The charger includes built-in safety features such as Over Voltage Protection (OVP), Over Current Protection (OCP), Overload Protection, and Short-circuit Protection.

Image: Close-up of the charger's label, detailing model HRK-84W-10S, input/output specifications, and safety warnings including 'HAZARDOUS AREA INDOOR USE ONLY' and 'Do Not Remove This Cover'.
3. Product Overview
The HERISKEER charger is a compact and efficient power adapter designed for various 36V electric mobility devices. It features a durable casing, a standard AC input cable, and a DC output cable terminated with a 5.5mm barrel connector. An LED indicator provides charging status at a glance.

Image: An illustration highlighting the charger's intelligent protection features, including overcharge, magnetic field, temperature, foreign body detection, charging, and overvoltage protection.

Image: An open view of the charger's internal circuit board, showcasing precise components and workmanship.
4. Setup
- Unpack: Carefully remove the charger and power cable from its packaging.
- Connect AC Power: Plug the AC power cable into the charger's input port, then plug the other end into a standard 100-240V AC wall outlet.
- Connect to Device: Insert the DC output barrel connector (5.5mm) into the charging port of your 36V electric bike or scooter. Ensure a secure connection.

Image: A detailed view of the 5.5mm barrel DC output plug, indicating its dimensions for compatibility verification.
5. Operating Instructions
Once properly connected, the charger will begin the charging process automatically.
- Charging Indicator: The LED indicator on the charger will illuminate RED to signify that charging is in progress.
- Full Charge Indicator: When the battery is fully charged, or if the charger is disconnected from the device, the LED indicator will turn GREEN.
- Charging Time: Charging time varies depending on the battery capacity and its current charge level. The charger provides intelligent high-speed charging.

Image: The charger unit highlighting the LED indicator, with text labels showing 'Red light charging' and 'Green light finished'.
6. Compatibility
This charger is compatible with various electric equipment using 36V lithium battery packs and a 5.5mm barrel connector. Verified compatible models include, but are not limited to:
- Aventon: Pace 350
- Jasion: eb5
- VIVI: 36V models
- Jetson: Adventure, Bolt, Bolt Pro, Eris, Metro J5, Metro J8, Ryder Ora Pro
- Swagtron Swagcycle EB Series: EB5 Pro, EB5 Plus, EB6 Youth, EB7 Elite, EB7 Plus, EB8 Fat Tire, EB9, EB10, EB11, EB12, EB-15
- Swagtron Swagger: SC-1, Swagger 3 SG-3, SG-5 Dash Lite, SG-7, Swagger V1
- Ho.ver-1: Alpha, Journey, Rally, Pioneer H1-PNR (36V models)
- ANCHEER: 12" Mini EB5 350W, 16" 250W Folding City Commuter, 20" 250W, 26" 250W/350W, 27.5" 250W/350W
Note: This charger is not compatible with Swagtron Swagger 1, 2, 5 Elite, or ANCHEER 48V models.

Image: A lifestyle image featuring an electric bike and an electric scooter, representing the types of devices compatible with this charger.
7. Specifications
| Feature | Specification |
|---|---|
| Model | HRK-84W-10S |
| Input Voltage | 100V-240V AC ~50/60Hz |
| Input Amperage | 2A |
| Output Voltage | 42V DC |
| Output Amperage | 2A Max (compatible with 1.5A) |
| Wattage | 84 watts |
| Connector Type | 5.5mm Barrel |
| Product Dimensions | 5 x 2 x 1 inches |
| Item Weight | 11.7 ounces |
| Cord Length | 9 feet |
8. Troubleshooting
- Charger LED is off:
- Ensure the AC power cable is securely plugged into both the charger and a working wall outlet.
- Verify the wall outlet has power.
- Check if the DC output connector is firmly inserted into the device's charging port.
- Charger LED remains RED after extended period:
- The battery may not be fully charged. Allow more time.
- Ensure the battery pack is functioning correctly.
- Verify the charger's output voltage and connector type match your battery's requirements.
- Charger LED is GREEN but battery is not fully charged:
- Disconnect and reconnect the charger to reset the charging cycle.
- Inspect the charging port and connector for any debris or damage.
- The battery itself might be faulty or nearing the end of its lifespan.
- Charger or battery becomes excessively hot:
- Immediately disconnect the charger from both the power outlet and the device.
- Ensure the charger is in a well-ventilated area.
- This could indicate a fault with the charger or the battery. Do not use until inspected by a professional.
9. Maintenance
- Cleaning: Use a soft, dry cloth to clean the charger. Do not use liquid cleaners or solvents.
- Storage: Store the charger in a cool, dry place away from direct sunlight and moisture when not in use.
- Cable Care: Avoid bending or crimping the cables excessively. Do not pull the cable to disconnect; always grasp the plug.
10. What's in the Box
- 1 x HERISKEER 42V 2A/1.5A Charger Adapter
- 1 x AC Power Cable

Image: The HERISKEER charger unit displayed alongside its detachable AC power cable, illustrating the complete package contents.
11. Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact HERISKEER customer service directly. Details are typically available on the manufacturer's official website or through your point of purchase.