Light: Conversion front light to Supernova M99 Pro / Pro 2

Status: March 1, 2024

General

• Stromer installs the Supernova m99 Pro on the ST2S (Stromer art. no. 400290) as well as the ST5 and ST7 (Stromer art. no. 401645). The ST5 Pinion is supplied with the M99 Pro 2 (Stromer item no. 404703). Since November 2023, the ST7 has also been equipped with the m99 Pro 2. The prerequisite is the EDS MC3 controller, which has been installed in the ST7 since May 25, 2023.
• All models have connectors specifically adapted to Stromer.
• The M99 Pro of the ST2S uses Open-Can (Source), the models for the ST5/ST7 Can-Bus.
  The Pro 2 does not have a Can-Bus.
• The Supernova M99 Pro is operated with 48 V. The m99 Pro2 requires 12 V.
• The ST3 and ST5 have the same type approval (CoC) in Germany (Source) and the same controller but not the same distribution board.
• The controller used with the ST3 Pinion (EDS MC3) has a JST connection for the Roxim Z4E as well as a JST connection for the M99 Pro.
• All models with m99 Pro 2 are operated in mode 1 (= default setting with low beam 8 W / high beam 16 W ). This limits the light output to 1600 or 1870 lumens (sources 1 | 2 | 3).

Admission:

The Supernova M99 Pro meets the requirements of ECE 113C (E1) for low beam and daytime running lights in accordance with ECE 87.
E-number: 014162 | Daytime running light: 004161.
In Germany, it has been approved for e-bikes and S-pedelecs (according to §50 StVZO).

The Supernova M99 Pro 2 is available in two versions:
- for 25 km/h bikes with K number
- for S-pedelecs with E-number (ECE E1). It has 'L-class' approval, e.g. L1e, and is StVZO-compliant.

ECE = Economic Commission for Europe

The conversion of Stromer S-Pedelecs to a Supernova M99 Pro/Pro 2 is not intended by myStromer AG. Conversion is always at your own risk and responsibility. Any recourse is excluded.

Conversion to Supernova m99 Pro / Pro 2

Conversion to the M99 Pro Stromer custom with use of the headlight button in the control ring works in the following models:

ST3
The ST3 uses the same controller as the ST5 but not the same distribution board.
Conversion to M99 ProConnection to the M99 connection after exchange with the Distribution board of the ST5. 
Conversion to M99 Pro 2Connection to the existing JST connection of the original Roxim Z4E Pro. It must be operated in mode 1** due to the limited power on the JST connection.

ST3 Pinion
The ST3 Pinion has the controller and distribution board of the ST5 and a JST 4-pin cable labeled 'M99'. This may not apply to the Limited Edition (LE) which has a different controller (Source).
Conversion to M99 ProConnection on the 'M99 cable'
Conversion to M99 Pro 2Connection to the 3-wire JST connector (gray, black, green) of the original Roxim. It must be operated in mode 1** due to the limited power on the JST connector.

** Mode 1 - M99 Pro 2 (as delivered; low beam 8 W / high beam 16 W)

Conversion by
DIY simply possible. In the Netherlands, this makes Riesewjik (Source). 

ST2S, ST5, ST7 (with the m99 Pro) on M99 Pro 2

ST7: Since November 2023, the ST7 has also been equipped with the m99 Pro 2, which requires the EDS MC3 controller (Stromer item no. 404320), which has been installed in the ST7 since May 25, 2023. You can look up the controller type in OMNI > Menu > System > Info > Peripherals. There is also a corresponding entry in the Omni service menu with which the headlight can be selected. However, this does not confirm that the "pro 2 controller" is also installed.

ST2S / ST5: As the 3,000 lumens of the m99 Pro2 cannot be used due to the power limitations of the controller, it is limited to 1600 or 1870 lumens (depending on the source). The light output is roughly the same as the m99 Pro and a conversion is not worthwhile.

Conversion table M99 Pro / Pro2

Based on the information currently available to me, I have created a table which shows a Overview of the conversion options of Stromer models to a Supernova m99 Pro / Pro 2. The table can be commented on and is without guarantee.

Supernova M99 Pro - conversion as a "stand alone solution"

The conversion shown here works with an M99 Pro E1 with Higo 6 connection and direct pick-up of the 48 V from the Stromer's battery. These are switched through to the Supernova by means of a relay, controlled by the 12 V (6 V) for the front light. According to the article by greenhound resp. benoist1the conversion outlined here works with the ST2 and also with the ST3 Pinion like Bundt cake describes.

The green and yellow cables are the connections for the CAN bus and are not used. The high beam switch in the control ring can therefore not be used. The small print with the relay is here from Magikweis described.

How the control of the brake light can be solved describes JoFischer here.

Supernova M99 Custom' for 'Mifa (Grace)', 'Flyer Fit' or 'GHOST' with Higo 6 connection or 6 V versions are offered online. These can be found e.g. on E-Bay and are not recommended for the conversion.

The Supernova M99 Pro has a switch-on delay of 15 seconds. When stationary, the light goes out after 5 minutes, but wakes up immediately as soon as a vibration is detected (built-in vibration sensor). The daytime running light is controlled by the brightness sensor and the high beam by a wired button.
The lamp also lights up when the Stromer is switched on during charging, but only for 5 minutes if the bike is stationary.

Supernova M99 Pro 2

In fall 2023, Supernova presented the successor to the M99 Pro, the M99 Pro 2.

In addition to the increase in light output (the strongest in the bike industry) and a revised design, the real innovations are hidden on the back of the lamp. There are now a total of five slots for various connection options.

• Slot 1: is intended for connection to the power supply of the e-bike system
• Sockets 2 and 3: Can be freely assigned. These can be used to connect things such as a smartphone, a navigation device, a horn or heated grips to the headlight
• Slot 4: the high beam button is connected to this slot
• Slot 5: is an additional 12 V power boost input via which even more power can be drawn. This is required, for example, if you want to illuminate the road with the full 3,000 lumens in high beam mode and slot 1 does not provide enough watts.

Comparison M99 Pro 2 vs Pro (M99 Pro 2 | M99 Pro)

The Supernova M99 Pro is often manufactured specifically for the respective customer. The technical data and the connections / cables / plugs may therefore vary from one customer to another. The table was created on the basis of the official Supernova operating instructions.

Supernova M99 Pro 2 Stromer custom

The lamp shown here is manufactured specifically for Stromer. The connector plug has 3 pins and is of the type JST. It has no CAN bus connection and is connected instead of the Roxim with 12 V, 0 V, high beam (gray, black, green). The minimum power available at connection P1 must be 8 W for low beam and 12 W for high beam. 35 W or 3000 lumens for high beam are only achieved when the power boost input P5 is activated and 35 W is available. All Stromer models cannot operate this mode as standard!

Purchase from
M99 Pro 2 Stromer custom with JST connector 3-pin
with Riesewijk - Art. No. 404703 | Price: 509 €

M99 PRO 2 E-45 with high beam button, Bosch Power Boost Cabel, Power Boost Connector P5
with r2-bike.com - Art. No. 52906 | Price: 334 €
The connection on the power supply or plug of the lamp must be adapted!

Modes of the Supernova m99 Pro 2

The Supernova m99 Pro 2 is supplied in mode 1. This is the only mode that works with Stromer when the corresponding controller connections are used. If you want to use the Power Boost, you need an additional 12 V supply at port 5 of the Supernova. This voltage would have to be generated separately, e.g. with a DC-DC converter.

> See also the topic 'Light: Conversion also Lupine SL MiniMax'

Adjusting the light

Further information

The 'stand-alone solution' above lacks integration into the Stromer electrics (CAN bus), i.e. the headlight cannot be controlled via the control ring on the handlebars.

In specific FB groups, 'electrician specialists' argued about whether integration into the on-board electrical system is possible or not.

Then it was said:

Hey! Hey! Hey! It is currently not possible to use the M99 pro. On the one hand a different wiring harness is required and on the other hand a suitable software. If you disconnect the Roxim lighting you will get an error message. The M99 is also controlled via Canbus. However, there is currently no software in which the M99 can be controlled in an ST3. The M99 is also not approved for the ST3, which should then be done.

or

People who say no have no idea, of course it works.

or

Basically: not possible. People have done it in the past with older Stromer models (check this topic: https://www.speedpedelecreview.com). BUT: the ST3 PINION has a newer controller, a different voltage than the M99 PRO, you have to attach an additional CANBUS connector and the ST3 software causes errors/problems because it does not recognize the other headlight. Either way, don't start on your expensive Stromer within the warranty period. If you screw things up (chances are you will), your warranty is gone and Stromer won't support you for modifying your Stromer (even illegally). Which I totally understand, it's not their mess and you tried to fit a non-original part.

Based on the information currently available to me, I have created a table which shows a Overview of the conversion options of Stromer models on a Supernova m99 Pro/Pro 2. The table can be commented on and is without guarantee.

Left...

If you would like to delve deeper into the subject, you can find out more by clicking on the links below.

Operating instructions: M99 Pro | M99 Pro2 | Taillight Pro 2
E-bike compatibility list from Supernova
FB - Stromer Owners & FB - STROMER ST Germany
stromerforum.ch - Conversion ST3 Pinion (Napfkuchen)
stromerforum.ch - Conversion plus brake light control (JoFischer)
stromerforum.ch - ST2S (didi_62)
speedpedelecreview.com - Supernova M99 Pro on Stromer ST 2 or ST1X
speedpedelecreview.com - Supernova m99 Pro
speedpedelecreview.com - M99 PRO 2 and Supernova M99 rear light 2
speedpedelecreview.com - Group initiative: Mount Supernova M99 PRO on Stromer yourself
pedelecforum.de - Conversion Stromer ST2 to Supernova M99 pro (greenhound)
pedelecforum.de - Small relay board for various bikes (Magikweis)
pedelecforum.de - Supernova M99 - who has one on which pedelec!
pedelecforum.de - Supernova M99 Pro on direct drive
pedelecforum.de - Supernova M99 Pro with 24V as a project (Siporax)
pedelcformum.de - Conversion for a Bulls E45 (KrE45)
pedelecforum.de - Can-Bus Codes
elektrofahrrad24.de - Supernova Pro vs Supernova Pro 2