Connector Bosch Round vs XLR 3-pin charge connector (3-pin locking: specs compared
Updated 05 September 2026.
5
specs differ
Connector Bosch Round and XLR 3-pin charge connector (3-pin locking differ on 5 specs: pins / contacts, current rating, voltage range, locking, common uses.
| Spec | Connector Bosch Round | XLR 3-pin charge connector (3-pin locking |
|---|---|---|
| Pins / contacts | keyed round contact, smart-system specific | 3 pins: pin 1 V+, pin 2 ground, pin 3 thermistor or BMS signal |
| Current rating | 4 A on the standard smart-system charger | up to about 16 A on a quality plug (Neutrik XX rated 16 A) |
| Voltage range | 36 V nominal pack | commonly 36 V, 48 V and 60 V battery systems |
| Locking | keyed round, smart-system only | locking, robust, keyed |
| Common uses | Bosch smart system (BES3) PowerTube, CompactTube, PowerPack and PowerMore batteries | many mid-power and high-power e-bikes and conversion packs where a data or temperature pin is useful |
Questions and answers
How do Connector Bosch Round and XLR 3-pin charge connector (3-pin locking compare?
Connector Bosch Round and XLR 3-pin charge connector (3-pin locking differ on 5 specs: pins / contacts, current rating, voltage range, locking, common uses.