Rosenberger - Plug connection

What is that?

The Rosenberger plug connection is a multifunctional connection that is used in the Stromer 48 V models. It is detachable, magnetic and keyed when driving and is used for:

• Charger plug
• Charging socket on the top of the down tube
• Battery base
• Wicket Cable (in the battery compartment)

It establishes the following (communication) connections:

• + / - 48 V charging poles
• + / - 12 V from the charger to the battery and from the battery to the Stromer
• Communication connection Low and High of the CAN bus

PIN assignment Plug

It should be noted that there are different Rosenberger connectors. In particular, the distance between the + /- PINs is different. On the left the Stromer Rosenberger plug, on the right the plug for non-Stromer 36 V systems (e.g. E-bike, scooter).

PIN assignment acoustic socket / charging socket

Spare parts

The Rosenberger plug and charging socket in the battery are not available from Stromer as spare parts, but the charging port is.

Charging plug

You can also DIY a wicket cable (Stromer no. 402336) and convert it into a charging plug. A possible dealer of the Rosenberger plugs and sockets is offered by MOUSER electronics, for example.

Charging port

The charging port plug on the Stromer down tube (above) is available as a spare part (Stromer Art. No. 401409).

Charging base battery

The charging socket on the BQ batteries is not available separately. However, it should be identical to the charging port plug.

Contact problems / corrosion

In combination with current flow and moisture, the plug connection tends to corrode and form verdigris. Due to its magnetic properties, it also attracts even the smallest metal particles. These properties can lead to leakage currents or short circuits. The connections must be kept clean.

Clean the contacts / socket with a lint-free cloth or compressed air. Do not use contact sprays/grease or the 'all-purpose weapon' WD40 Multifunction Smart Straw.

Stubborn corrosion can be removed with a contact spray or isopropyl alcohol and a fiberglass brush.