Introduction
This manual provides essential information for the safe and effective use of your Futaba Lithium-Ion 7.4V 2200mAh Transmitter (Tx) Battery. This battery is specifically designed for use with Futaba 12Z and 14MZ series transmitters, offering reliable power for your remote control applications. It features a plastic-encased design, Lithium-Ion chemistry, and a unique slide charged indicator for convenience.
Safety Information
Lithium-Ion batteries require careful handling. Please read and adhere to the following safety guidelines:
- Charging: Only use chargers specifically designed for Lithium-Ion batteries, such as the recommended Futaba charger (FUTM1700). Using incompatible chargers can lead to fire, explosion, or severe injury.
- Storage: Store the battery in a cool, dry place away from direct sunlight, heat sources, and flammable materials. Do not store fully charged for extended periods.
- Handling: Do not puncture, disassemble, short-circuit, or expose the battery to water or extreme temperatures. Avoid dropping or subjecting the battery to severe impacts.
- Disposal: Dispose of batteries according to local regulations. Do not dispose of in household waste.
- Damage: If the battery appears damaged, swollen, or leaks, discontinue use immediately and dispose of it safely.
Product Overview
The Futaba 7.4V 2200mAh Tx Battery is a robust power source for your Futaba 12Z/14MZ series transmitters. Its design ensures a secure fit and reliable performance.

Figure 1: Futaba Lithium-Ion 7.4V 2200mAh Transmitter Battery. This image shows the white rectangular battery with "LITHIUM-ION BATTERY" and "Futaba" printed in black on its top surface. A small triangular arrow indicates the insertion direction.
Key Features:
- Plastic encased 7.4V battery for durability and protection.
- Lithium-Ion chemistry for high energy density and stable discharge.
- Unique slide charged indicator for quick status checks.
Setup
Before initial use, ensure the battery is fully charged.
- Charging the Battery:
- Connect the Futaba 7.4V 2200mAh Lithium-Ion battery to a compatible Futaba Lithium-Ion charger (e.g., FUTM1700).
- Follow the charger's instructions for proper charging procedures. Do not overcharge.
- The unique slide charged indicator on the battery will provide a visual cue of its charge status.
- Installing the Battery:
- Ensure your Futaba 12Z or 14MZ transmitter is powered off.
- Locate the battery compartment on your transmitter.
- Carefully insert the battery, aligning it with the connectors and ensuring the slide charged indicator is visible if applicable.
- Close the battery compartment securely.
Operating Instructions
Once installed and charged, the battery powers your Futaba transmitter.
- Powering On: Turn on your transmitter as per its specific operating manual. The battery will provide the necessary power.
- Monitoring Battery Life: Regularly check the battery level indicator on your transmitter's display. The unique slide charged indicator on the battery itself can also provide a quick visual reference.
- Optimal Performance: For best performance and longevity, avoid completely discharging the battery. Recharge when the transmitter indicates low battery.
Maintenance
Proper maintenance extends the life of your battery.
- Cleaning: Keep the battery and its contacts clean and free from dust or debris. Use a dry, soft cloth.
- Storage: If storing the battery for an extended period, charge it to approximately 50-60% capacity. Do not store fully charged or fully discharged. Store in a cool, dry environment.
- Temperature: Avoid exposing the battery to extreme temperatures (below 0°C / 32°F or above 40°C / 104°F) during use or storage.
Troubleshooting
If you encounter issues with your battery, consider the following:
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not charging | Incorrect charger; poor connection; faulty battery/charger | Ensure you are using a compatible Futaba Lithium-Ion charger (FUTM1700). Check connections. Test with another known good battery/charger if available. |
| Short operating time | Battery not fully charged; aging battery; high power consumption | Ensure battery is fully charged before use. Battery capacity naturally degrades over time; consider replacement if significantly reduced. |
| Battery feels hot during charging/use | Overcharging; internal short; excessive load | Immediately disconnect the battery. Do not use if it feels excessively hot or shows signs of swelling. Dispose of safely. |
Specifications
| Attribute | Value |
|---|---|
| Product Dimensions | 6.25 x 2.5 x 1.5 inches |
| Item Weight | 5.3 ounces |
| Item Model Number | FUTM1475 |
| Battery Cell Composition | Lithium Ion |
| Battery Capacity | 2200 Milliampere Hour (mAh) |
| Voltage | 7.4V |
| Recommended Uses | Radio Transmitters (Futaba 12Z/14MZ) |
| Manufacturer | Hobbico Inc |
Warranty Information
For detailed warranty information regarding your Futaba Lithium-Ion Tx Battery, please refer to the official Futaba website or the documentation provided with your original purchase. Warranty terms typically cover manufacturing defects for a specified period from the date of purchase.
Support
Should you require technical assistance or have questions not covered in this manual, please contact Futaba customer support. Visit the official Futaba website for contact details, FAQs, and additional resources.
Online Resources: www.futabarc.com





