Quote:
Originally Posted by KonaSS
Finally, troubleshooting with the small wireless cheap batteries is much easier. My Shimano Di2 bike does have a problem.. Only holds a charge for a couple weeks. We have tried replacing the battery, which was a 3 day shop visit. But nothing has worked so far. I guess the next step is another shop visit so they can check the internal wires and try and find the gremlin in the system. More cost and more time without a bike. With Sram, I would have tried a new battery in 3 seconds and had an answer if that was the problem.
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That is a pretty easy problem to diagnose: Using a test switch and digital ammeter is the simplest, most accurate way to measure parasitic drain directly. A test switch goes between the negative battery terminal and negative battery cable.
On a car however same procedure on a bicycle
https://www.wikihow.com/Find-a-Parasitic-Battery-Drain
07-05-2023, 04:03 PM
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