Keenstone 9V 800mAh Li-ion Rechargeable Battery and Charger User Manual

Introduction

Thank you for choosing the Keenstone 9V 800mAh Li-ion Rechargeable Batteries and Charger. This product provides a reliable and environmentally friendly power solution for your electronic devices. This manual contains important information regarding the safe and efficient use of your new batteries and charger. Please read it thoroughly before use and retain it for future reference.

The Keenstone 9V Li-ion batteries offer a high capacity of 800mAh, designed for extended use and up to 500 recharge cycles. The included 3-slot USB charger ensures convenient and safe charging.

Safety Information

To ensure safe operation and prolong the lifespan of your batteries and charger, please observe the following safety precautions:

• Do not short-circuit the battery terminals.
• Do not expose batteries or charger to fire, water, or extreme temperatures (above 60°C / 140°F or below -20°C / -4°F).
• Keep batteries and charger out of reach of children and pets.
• Do not disassemble, puncture, or modify the batteries or charger.
• Use only the provided Keenstone charger or a compatible Li-ion charger for these batteries.
• Dispose of depleted batteries according to local regulations for lithium-ion batteries.
• The batteries feature built-in protection mechanisms against over-charge, over-discharge, short-circuit, reverse-polarity, over-temperature, output over-voltage, and output over-current.

The Keenstone 9V 800mAh Lithium-ion rechargeable battery is depicted with various safety icons, including battery overcharge protection, battery overdischarge protection, temperature protection, short circuit protection, output over voltage protection, and output overcurrent protection. A shield symbol emphasizes safety.

Package Contents

Please verify that all items are present in your package:

• 3 x Keenstone 9V 800mAh Li-ion Rechargeable Batteries
• 1 x Keenstone 9V 3-Slot Li-ion Battery Charger
• 1 x USB Charging Cable
• 1 x User Manual

Setup

Follow these steps to prepare your charger and batteries for use:

1. Connect the provided USB charging cable to the charger's USB input port.
2. Plug the other end of the USB cable into a compatible USB power source (e.g., a 5V/2A USB wall adapter, power bank, or computer USB port). Ensure the power source provides at least 2A for optimal charging speed.
3. The charger is now ready to accept batteries for charging.

This image shows the Keenstone 9V battery charger, featuring three independent charging slots. A USB cable is connected, illustrating the power input method. The charger has LED indicators for charging status.

Operating Instructions

Charging the Batteries

1. Carefully insert one or more Keenstone 9V Li-ion batteries into the charging slots of the charger. Ensure correct polarity.
2. The LED indicator for each slot will illuminate RED to indicate that the battery is charging.
3. Once a battery is fully charged, its corresponding LED indicator will turn BLUE.
4. Charging time for three 800mAh batteries is approximately 2.5 hours when using a 5V/2A input.
5. Remove batteries from the charger once fully charged.

Using the Batteries

Keenstone 9V Li-ion batteries are suitable for a wide range of compatible devices, including:

• Toys
• Clocks
• Radios
• Smoke Alarms
• Torches
• Microphones and other audio equipment

Insert the batteries into your device, ensuring correct polarity as indicated by the device's battery compartment.

Maintenance and Care

Proper maintenance ensures optimal performance and longevity of your Keenstone batteries:

• Storage: Store batteries in a cool, dry place away from direct sunlight and extreme temperatures. For long-term storage, it is recommended to store batteries at approximately 50% charge.
• Cleaning: If necessary, clean the battery terminals and charger contacts with a clean, dry cloth to ensure good electrical connection.
• Lifespan: These batteries are designed for at least 500 recharge cycles. Actual lifespan may vary based on usage patterns and charging habits.
• Disposal: Do not dispose of batteries in household waste. Recycle them at an authorized recycling facility for lithium-ion batteries.

This visual demonstrates the longevity of Keenstone Li-ion batteries, indicating that one rechargeable battery can be recharged up to 500 times, offering the equivalent usage of 1500 disposable alkaline batteries over its lifespan.

Troubleshooting

If you encounter issues with your Keenstone batteries or charger, refer to the following common problems and solutions:

• Batteries not charging:
  • Ensure the USB cable is securely connected to both the charger and the power source.
  • Verify that the power source is active and providing sufficient power (5V/2A recommended).
  • Check that the batteries are inserted correctly into the charger slots with the correct polarity.
  • Clean battery terminals and charger contacts if they appear dirty.
• Charger LEDs not lighting up:
  • Confirm the charger is properly connected to a working USB power source.
  • Try a different USB cable or power adapter.
• Reduced battery life or performance:
  • This may indicate that the battery is nearing the end of its expected lifespan (after approximately 500 cycles).
  • Ensure batteries are fully charged before use.
  • Operating in extreme temperatures can temporarily affect performance.

Specifications

Detailed technical specifications for the Keenstone 9V 800mAh Li-ion Rechargeable Batteries and Charger:

The image highlights the operational temperature range of the Keenstone 9V Li-ion battery, showing its ability to perform reliably in conditions from -4°F (-20°C) to 140°F (60°C), represented by snowflake and sun icons.

Warranty and Support

Keenstone products are manufactured to high-quality standards. For any questions, concerns, or technical assistance regarding your Keenstone 9V Li-ion batteries and charger, please contact Keenstone customer support. Please refer to the product packaging or the Keenstone official website for the most current contact information.