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XLR 3-pin charge connector (3-pin locking, up to 16 A): pinout, rating and use
What the XLR 3-pin charge connector carries, how it is rated, and which e-bike systems use it.
Power panel
Voltage
commonly 36 V, 48 V and 60 V battery systems
Connector data
| Pins / contacts | 3 pins: pin 1 V+, pin 2 ground, pin 3 thermistor or BMS signal |
|---|---|
| Current rating | up to about 16 A on a quality plug (Neutrik XX rated 16 A) |
| Voltage range | commonly 36 V, 48 V and 60 V battery systems |
| Locking | locking, robust, keyed |
| Common uses | many mid-power and high-power e-bikes and conversion packs where a data or temperature pin is useful |
Common uses: many mid-power and high-power e-bikes and conversion packs where a data or temperature pin is useful.
The XLR three-pin is the robust, locking workhorse charge plug. The third pin carries a thermistor or BMS signal, which is why it suits higher-current 48 V and 60 V packs. Confirm the pinout, because not every builder wires pin 3 the same way.
Systems and other connectors
DC barrel (coaxial) charge connector5.5 x 2.1 or 5.5 x 2.5 mmRosenberger / Magcode magnetic charge connectormagnetic snap, keyed
Sources: ebikes.ca, E-bike Connectors reference ยท Cyberpika, Connector Types Explained: DC Barrel, XLR, Rosenberger