DC 2.1/2.5mm E-Bike Battery Charger Connector Plug Adapter
DC 2.1/2.5mm E-Bike Battery Charger Connector Plug Adapter
DC 2.1/2.5mm E-Bike Lithium Battery Charger Connector — Male & Female Adapter
Keep your electric bicycle charging system running smoothly with this reliable DC 2.1/2.5mm round connector adapter. Designed as a direct replacement or extension for lithium battery charger cables, this plug-and-socket set delivers a secure, stable connection every time. Whether you're replacing a worn-out connector or building a custom charging lead, this compact plastic adapter is an easy, cost-effective solution for home DIY e-bike maintenance.
Key Features
- Dual Compatibility: Fits both DC 2.1mm and DC 2.5mm charger plug standards — ideal for a wide range of electric bicycles and lithium battery chargers.
- Male & Female Connectors: Round barrel design includes both male and female ends for versatile wiring and replacement use.
- Durable Plastic Construction: Made from sturdy, lightweight plastic housing that resists everyday wear and heat during charging cycles.
- Multiple Length Options: Available in 10 cm (3.93 in), 14 cm (5.51 in), and 19.8 cm (7.79 in) cable lengths to suit your setup.
- Home DIY Friendly: Simple to install with no specialist tools required — a practical choice for e-bike owners and hobbyists alike.
- Brand New & High Quality: 100% new components; colour: black.
Specifications
| Material | Plastic |
| Connector Type | DC Round Barrel — 2.1mm / 2.5mm |
| Colour | Black |
| Available Lengths | A1/A2: 10 cm (3.93 in) | A3/A4: 14 cm (5.51 in) | A5/A6: 19.8 cm (7.79 in) |
| Package Contents | 1 × Connector / Cable (as selected) |
| Country of Origin | Made in China |
Note: Photos may not reflect actual size — please refer to the measurements above. Allow 5–10 mm tolerance due to manual measurement. Colour may vary slightly between monitors.
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Frequently Asked Questions
Q: What is the difference between the DC 2.1mm and DC 2.5mm connector sizes?
A: The DC 2.1mm and 2.5mm measurements refer to the inner pin diameter of the barrel connector. The 2.1mm is the more common standard found on many e-bike chargers, while 2.5mm is used on some larger or higher-current lithium battery systems. Check your existing charger port or cable before selecting to ensure a proper fit.
Q: Can I use this connector for other lithium battery applications beyond e-bikes?
A: Yes — this DC round barrel connector is compatible with any device that uses a matching 2.1mm or 2.5mm DC charging socket, including scooters, battery packs, and small electronics. Always verify the voltage and current rating of your specific application before use.
Q: Which cable length should I choose?
A: Select based on the distance between your charger output and battery input port. The 10 cm option suits tight or direct connections, the 14 cm provides a little more reach, and the 19.8 cm length is best for setups where the charger and battery are further apart or where routing around frame components is needed.