Introduction
If you're into RC planes, drones, cars, or any DIY electronics projects with batteries and motors, choosing the right power connector is key. It affects safety, performance, and how easy it is to swap batteries or parts. In this post, we'll compare three popular types of connectors used in the UK RC hobby scene: XT60, XT90, and bullet connectors.
What Are These Connectors?
XT60 Connectors
XT60 connectors are widely used in RC batteries and ESCs. They are rated for up to 60 amps continuous current and have a secure, keyed design to prevent reverse polarity connection. The connector features a tough nylon housing with gold-plated male and female bullet connectors inside.
XT90 Connectors
XT90 connectors are a beefier version of the XT60, rated for up to 90 amps continuous current. They are larger, sturdier, and also keyed to prevent incorrect connections. These are great for higher power setups like large drones, cars, or planes with bigger batteries and motors.
Bullet Connectors
Bullet connectors are simple cylindrical connectors consisting of a male and female pin. They come in various sizes, commonly from 3.5mm to 6mm diameter pins. Bullet connectors are popular for their simplicity and ease of soldering, but they lack the protective housing and polarity protection of XT connectors.
Comparing the Connectors
Here's a quick rundown of the main differences and where each shines:
- Current Rating: XT60 up to 60A, XT90 up to 90A, bullet connectors depend on pin size but can vary widely.
- Size and Weight: XT60 is compact, XT90 is larger and heavier, bullet connectors are minimal but require care to avoid shorts.
- Safety: Both XT types have keyed housings to avoid reverse connections. Bullet connectors have no housing so accidental shorts are more likely.
- Ease of Use: XT connectors snap together securely and are less likely to disconnect accidentally. Bullet connectors can be easier to plug/unplug but might loosen over time.
- Soldering and Repair: Bullet connectors are straightforward to solder and replace. XT connectors require careful heat application but are generally robust.
Which Should You Use?
Choosing the right connector depends on your project's power demands and your priorities:
- For Small to Medium Setups: XT60 is often the best choice. It balances current rating, size, and safety, making it ideal for most mini quads, small planes, or RC cars.
- For High-Power Applications: If your build draws more than 60 amps, XT90 connectors are safer and more reliable.
- For Custom or Lightweight Builds: Bullet connectors are handy when weight is critical or you want simple, modular connections. Just be cautious about securing the connectors and avoiding shorts.
Additional Tips
- Always double-check connector polarity before plugging in to avoid expensive damage.
- Use heat shrink tubing to insulate connections for extra safety.
- Consider the connector gender and compatibility with your existing hardware.
- When soldering, use a good quality soldering iron and proper technique to avoid cold joints.
Conclusion
XT60, XT90, and bullet connectors each have their place in the UK RC and maker community. XT connectors offer safety and reliability for most builds, while bullet connectors provide flexibility and simplicity. Match your choice to your current and future needs, and you'll enjoy safer, hassle-free power connections in your RC projects.
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