Introduction
The TELESIN Triple Battery Charger and Storage Case is designed to efficiently charge up to three GoPro Hero 9, Hero 10, Hero 11, or Hero 12 batteries simultaneously. This compact device also functions as a protective storage case, safeguarding your batteries and up to two micro SD cards from dust, debris, and minor impacts. Its user-friendly design and robust safety features ensure reliable performance for your GoPro accessories.

Image: The TELESIN Triple Battery Charger, a compact black cube with three green indicator lights, held in a hand.
Product Features
- Dual Functionality: Serves as both a charger for three batteries and a protective storage case.
- Compact and Portable: Lightweight design for easy transport in bags or luggage.
- Rapid Charging: Fully charges three batteries in approximately 2.5 hours.
- Universal Compatibility: Compatible with original GoPro Hero 9, Hero 10, Hero 11, and Hero 12 batteries.
- Smart LED Indicators: Clearly displays charging status for each battery.
- Advanced Safety Protection: Built-in safeguards against overcharging, short circuits, over-discharge, over-temperature, over-current, and over-voltage.
- USB Type-C Interface: Reversible connector for convenient power input.
- Micro SD Card Storage: Integrated slots for storing two micro SD cards.

Image: A person placing the compact TELESIN charger into a backpack, highlighting its portable design for travel and outdoor activities.

Image: A diagram illustrating the TELESIN charger's safety features, including over-heat, over-voltage, and over-current protection.
Package Contents
Please verify that all items are present in your package:
- TELESIN Triple Battery Charger and Storage Case
- USB Type-C Charging Cable
Setup
1. Connecting the Charger
Connect the provided USB Type-C cable to the charging port on the back of the TELESIN charger. Plug the other end of the USB cable into a compatible USB power source (e.g., wall adapter, power bank, computer USB port). The charger will enter standby mode, indicated by blue LED lights.
2. Inserting Batteries
Open the lid of the charger. Insert up to three GoPro Hero 9, Hero 10, Hero 11, or Hero 12 batteries into the designated slots. Ensure the battery contacts align correctly with the charger pins. The charger is designed for easy insertion and removal.

Image: The TELESIN charger with its lid open, revealing slots for three batteries and two micro SD cards, demonstrating compatibility with GoPro Hero 9, 10, 11, and 12 batteries.

Image: The TELESIN charger connected to a wall adapter via a USB-C cable, with batteries inside, illustrating the power connection and charging process.
Operating Instructions
1. Charging Batteries
Once batteries are inserted and the charger is connected to a power source, the charging process will begin automatically. The LED indicators for each battery slot will change color to reflect the charging status.
2. LED Indicator Guide
- Red Light: Indicates the battery is currently charging.
- Yellow Light (breathing blue): Indicates the battery is close to being fully charged.
- Green Light: Indicates the battery is fully charged.
- Blue Light (always on): Indicates the charger is in standby mode (no batteries or fully charged batteries).
A full charge for three batteries typically takes approximately 2.5 hours.

Image: A detailed view of the TELESIN charger's LED indicators, visually explaining the different light colors for battery status: red for charging, yellow for near full, green for full, and blue for standby.
3. Storage Function
When not in use, the charger doubles as a protective storage case. Close the lid to secure the batteries and any micro SD cards placed in the dedicated slots. This protects them from environmental elements like water droplets and dust.
Video: Official TELESIN demonstration of the Magnetic Triple Charger Battery Storage Charging Box, showcasing its features and ease of use.
Maintenance
To ensure the longevity and optimal performance of your TELESIN charger:
- Keep the charger clean and free from dust and debris. Use a soft, dry cloth for cleaning.
- Avoid exposing the charger to extreme temperatures or direct sunlight for prolonged periods.
- Do not attempt to disassemble or modify the charger, as this may void any potential warranty and could cause damage.
- Store the charger in a cool, dry place when not in use.
Troubleshooting
If you encounter issues with your TELESIN charger, consider the following:
- Charger not powering on: Ensure the USB Type-C cable is securely connected to both the charger and a functional power source. Try a different cable or power adapter.
- Batteries not charging: Verify that the batteries are inserted correctly with contacts aligned. Ensure the batteries are compatible with the charger (GoPro Hero 9/10/11/12).
- Slow charging: Use a power adapter that provides sufficient output (e.g., 5V/2A or higher) for optimal charging speed.
- LED indicators not working: Check power connection and battery insertion. If the issue persists, contact customer support.
For further assistance, please refer to the support information provided with your purchase or visit the official TELESIN website.
Specifications
| Parameter | Value |
|---|---|
| Brand | TELESIN |
| Model Number | SJTG2-KTMG-KTM-MIXCH2-B08MFD1PC3 |
| Compatible Batteries | GoPro Hero 9, Hero 10, Hero 11, Hero 12 |
| Output Voltage | 5 Volts |
| Charging Time (3 batteries) | Approx. 2.5 hours |
| Item Weight | 4.9 ounces (140 Grams) |
| Package Dimensions | 5.04 x 4.17 x 2.2 inches |
| Certifications | UL, FCC, CE |
Warranty and Support
TELESIN products are manufactured to high-quality standards. For information regarding warranty coverage, returns, or technical support, please refer to the documentation included with your purchase or visit the official TELESIN website. Please retain your proof of purchase for any warranty claims.





