1. Introduction
This user manual provides detailed instructions for the safe and efficient use of your Kastar 2-Pack Battery and AC Wall Charger. This product is designed to provide reliable power for a wide range of compatible action cameras.
Package Contents:
- 2 x Kastar Lithium-Ion Batteries (1100mAh)
- 1 x Kastar AC Wall Charger

Image 1: The Kastar AC Wall Charger and two battery boxes included in the package.
2. Product Overview
The Kastar battery and charger system is designed for convenience and compatibility with various action camera models. The charger features a foldable plug for portability and LED indicators for charging status.
Charger Features:
- Foldable flat pin for easy storage and travel.
- Input: AC 100~240V 50~60Hz.
- Output: DC 4.2V 600mA.
- LED indicator: Red light for charging, Green light for standby or full-charge.

Image 2: The Kastar AC Wall Charger with its foldable prongs in the stored position.

Image 3: The Kastar AC Wall Charger with its prongs extended, ready for use.
Battery Features:
- Type: Lithium-Ion.
- Voltage: 3.7V.
- Capacity: 1100mAh.

Image 4: The retail packaging for a Kastar battery, highlighting its high capacity and compatibility.
3. Setup and Charging
Inserting the Battery:
- Ensure the charger is unplugged from the power outlet.
- Align the battery with the charging slot on the charger, ensuring the metal contacts on the battery match the pins inside the charger.
- Gently push the battery into the slot until it is securely seated.
Charging Process:
- Extend the foldable prongs of the AC wall charger.
- Plug the charger into a standard AC 100-240V wall outlet.
- The LED indicator on the charger will illuminate red, indicating that the battery is currently charging.
- Once the battery is fully charged, the LED indicator will turn green.
- Unplug the charger from the wall outlet and remove the charged battery.
4. Operating Instructions
Battery Compatibility:
The Kastar batteries and charger are compatible with a wide range of camera models, including but not limited to:
- Eken H8, H8 Pro, H8R, H9, H9R
- QUMOX SJ4000, SJ4000 WiFi, SJ5000, SJ5000 WiFi, SJ6000
- SJCAM M10, Qumox BoomYours, Qumox DX 288812, Qumox DX 288813, Qumox SupTig3
- SJCAM SJ4000, SJ5000, SJ5000 Plus, SJ500X Elite, SJ6000, SJ7000, SJ8000, SJ9000
- Pruveeo DV200 Waterproof Sports Action Camera
For a complete list of compatible models, please refer to the product packaging or the product listing where you purchased this item.
5. Maintenance and Care
Battery Care:

Image 5: Important caution information printed on the battery.
CAUTION: Make sure you observe the following important battery precautions. Failure to do so can cause batteries to leak, overheat, or explode.
- Do not expose batteries to heat or fire.
- Never try to disassemble, modify, or apply solder to batteries.
- Never short the terminals of the batteries or carry them together with metal objects that can cause shorting.
- Do not tear or remove the outer label of the batteries.
- Never use, change, or store batteries in areas exposed to high temperature.
Charger Care:
- Keep the charger dry. Do not expose it to moisture or liquids.
- Clean the charger with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Store the charger in a cool, dry place when not in use.
6. Troubleshooting
Common Issues and Solutions:
- Battery not charging (LED remains green or off):
- Ensure the charger is securely plugged into a working wall outlet.
- Verify the battery is correctly inserted into the charger with contacts aligned.
- Check if the battery is fully discharged; it may take a few moments for the red light to appear.
- Try charging a different battery (if available) to determine if the issue is with the battery or the charger.
- Charger LED not illuminating:
- Confirm the wall outlet has power.
- Ensure the charger's prongs are fully extended and making proper contact.
- Inspect the charger for any visible damage.
If problems persist, please refer to the warranty and support section for further assistance.
7. Specifications
| Feature | Specification |
|---|---|
| Battery Type | Lithium-Ion |
| Battery Voltage | 3.7V |
| Battery Capacity | 1100mAh |
| Charger Input | AC 100~240V 50~60Hz |
| Charger Output | DC 4.2V 600mA |
| Product Dimensions | 2.5 x 2 x 3 inches |
| Item Weight | 4.4 ounces |
| Certifications | CE, FCC |
| Model Number | NOCAR-2B-SJ4000-D |
8. Warranty and Support
Kastar products are designed for reliability and performance. This product comes with an 18-month warranty from the date of purchase, covering manufacturing defects.
For technical support, warranty claims, or any questions regarding your Kastar product, please contact Kastar customer service through the retailer where you purchased the item or visit the official Kastar website for contact information.
Please retain your proof of purchase for warranty purposes.

