Retevis FJ9121B2

Retevis RT22 Series Li-ion Battery User Manual

Model: FJ9121B2

Introduction

This manual provides essential information for the safe and effective use of your Retevis RT22, RT22S, RT15, RT19 series Li-ion battery. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.

Product Features

  • Voltage: 3.7V
  • Capacity: 1000mAh
  • Power: 3.7Wh
  • Compact and portable design for ease of use in various environments.
  • Provides approximately 8-12 hours of usage after a 3-hour charge.
  • Designed as an original replacement or backup battery.
Two Retevis RT22 Li-ion batteries, white with black text, showing model, voltage, capacity, and power.

Image: Two Retevis RT22 Li-ion batteries, highlighting their compact design and specifications.

Compatibility

This battery is specifically designed for use with the following Retevis two-way radio models:

  • Retevis RT22
  • Retevis RT22S
  • Retevis RT15
  • Retevis RT19
  • WLN KD-C1
Image showing a Retevis RT22 battery alongside various compatible Retevis walkie-talkies.

Image: The Retevis RT22 battery shown with compatible walkie-talkie models, including RT22, RT22S, RT15, and RT19.

Setup

  1. Unpacking: Carefully remove the battery from its packaging. Inspect for any visible damage.
  2. Initial Charge: For first-time use, fully charge the battery before installation. Connect the battery to a compatible Retevis charger. The charging indicator on the charger will typically show red during charging and turn green when fully charged.
  3. Installation: Ensure the walkie-talkie is powered off. Align the battery contacts with the terminals inside the battery compartment of your compatible Retevis radio (e.g., RT22, RT22S, RT15, RT19). Gently push the battery into place until it clicks securely.
A Retevis RT22 battery being inserted into the battery compartment of a walkie-talkie.

Image: The battery correctly positioned within the walkie-talkie's battery slot, ready for installation.

Operating Instructions

Charging the Battery

  • Use only the specified Retevis charger for this battery pack.
  • Charging time is approximately 3 hours for a full charge.
  • Do not overcharge the battery. Disconnect once fully charged.

Battery Usage

  • A fully charged battery provides approximately 8-12 hours of typical usage, depending on transmission frequency and power settings.
  • Monitor your radio's battery indicator to determine remaining power.
  • For optimal battery life, avoid completely draining the battery before recharging.
A Retevis RT22 battery shown next to a person using a walkie-talkie, illustrating typical usage.

Image: The Li-ion battery in context, demonstrating its role in powering the walkie-talkie for communication.

Maintenance and Safety

  • Storage: Store the battery in a cool, dry place away from direct sunlight and extreme temperatures. If storing for extended periods, charge the battery to about 50% capacity.
  • Cleaning: Use a dry, soft cloth to clean the battery and its contacts. Do not use harsh chemicals or abrasive materials.
  • Disposal: Do not dispose of the battery in fire or with household waste. Follow local regulations for proper disposal of Li-ion batteries.
  • Safety Warnings:
    • DO NOT disassemble the battery.
    • DO NOT dispose of in fire.
    • DO NOT charge the battery in hazardous locations.
    • DO NOT short-circuit the terminals.
    • USE SPECIFIED CHARGER TO CHARGE BATTERY PACK.
The back of the Retevis RT22 battery showing printed warning and caution labels.

Image: The reverse side of the battery displaying important safety warnings and cautions regarding handling and charging.

Troubleshooting

ProblemPossible CauseSolution
Battery not chargingIncorrect charger used; poor contact; faulty battery/charger.Ensure you are using the correct Retevis charger. Check battery and charger contacts for cleanliness and proper connection. Try another known-good battery or charger if available.
Short battery lifeBattery not fully charged; high power usage; aging battery.Ensure battery is fully charged before use. Reduce transmission power if possible. If battery is old, consider replacement.
Radio not powering on with batteryBattery not installed correctly; battery completely drained; faulty battery.Re-install the battery, ensuring a secure connection. Charge the battery fully. Test with another battery if available to isolate the issue.

Specifications

AttributeValue
Model NumberFJ9121B2
Battery TypeLi-ion
Voltage3.7V
Capacity1000mAh
Power3.7Wh
Item Weight0.74 ounces (approx. 0.05 Pounds)
Product Dimensions2.05 x 1.3 x 0.2 inches
ManufacturerRetevis
Date First AvailableApril 19, 2017
A close-up of the Retevis RT22 battery with its dimensions (5.4*3.5*0.4cm / 2.12*1.37*0.15inch) overlaid.

Image: Detailed view of the battery, including its physical dimensions for reference.

Warranty and Support

Retevis provides the following warranty and support for this product:

  • Warranty Period: 1 year warranty for accessories.
  • Return Policy: 30 days no-reason return.
  • Post-Warranty Service: Maintain service is still offered beyond the warranty period; buyers are required to cover corresponding costs.
  • Contact Support: For any inquiries or support needs, please contact Retevis through Amazon. They aim to reply within 12 hours.

For further assistance, please visit the official Retevis store on Amazon: Retevis Amazon Store

© 2025 Retevis. All rights reserved.

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