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  1. M

    Focus Jam2 LTD Charging problem

    I can draw you a plug in SolidWorks. Print on a 3D printer.
  2. M

    Focus Jam2 LTD Charging problem

    Good. I told you about this device. I use it. A lot can be customized and in addition you can freely buy. Unlike Bosch. Shimano Setting Kit for STePS and Di2 - incl. SM-PCE1
  3. M

    Focus Jam2 LTD Charging problem

    This is not surprising. Since the brain motor from shimano. It is interesting to connect computer diagnostics from shimano, what she will say. And you are good.
  4. M

    Focus Jam2 LTD Charging problem

    The idea is very cool. But there was a deplorable experience using a battery from Shimano. A standard charger killed him. It is not clear why the system from Shimano did not immediately put their battery?
  5. M

    Focus Jam2 LTD Charging problem

    Principle is possible. But shipping services cost much more. And how does the manufacturer react to this?
  6. M

    Focus Jam2 LTD Charging problem

    This is not suspicion, but a fact! This affects the operation of the checking microcontroller. Also in this SMD chain, the resistors change their value (low quality, overheating due to incorrect power), and this underestimates the logical level of the input voltage, and charging does not include...
  7. M

    Focus Jam2 LTD Charging problem

    My improvements made to the charger will show their effect. I will try to make instructions for revision. (Photo report)
  8. M

    Focus Jam2 LTD Charging problem

    Very interesting. I think they won the time without acknowledging the problem. It's not nice to buy an expensive thing to get that. And the paradox is such when making various branded Ebike of expensive European brands, chargers, battery, on-board computers, often the ill-conceived design...
  9. M

    Focus Jam2 LTD Charging problem

    Threshold voltage, even lower. This charge conditionally thinks that there is no answer on the power line. When connecting and disconnecting, an unstable state is created, and sometimes it rolls.
  10. M

    Focus Jam2 LTD Charging problem

    Unfortunately, in our country there are no dealers of this brand. Charger man is already testing. There is an idea to listen to the authorization bus and make your software. Using a regular 42 volt charger. Himself, I made myself a BOSCH charger with a homemade plug and a micro-controller that...
  11. M

    Focus Jam2 LTD Charging problem

    Good afternoon. I had the opportunity to repair the charger from Focus 03/18. The problem was that I did not want to charge below 10% on batteries and low ambient temperature. The forum said this. Having studied the circuitry of a 4 amp charger, I found many flaws up to the soldered components...
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