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Topics - brose

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Zero Motorcycles Forum | 2013+ / Replacement Stock Charger Buzzing Noise

« on: August 11, 2019, 08:18:15 PM »

I just replaced the original 5 year old on board charger that was dying with a new one that is the latest design. The new charger has a buzzing sound while charging that sounds like a transformer buzzing on an electrical wire or utility power box sometimes can. It is not very loud but definitely different from the soft hum of the original charger. Is this something to be concerned about?

Zero Motorcycles Forum | 2013+ / How does the stock charger slowly die?

« on: August 07, 2019, 09:19:48 PM »

I have an infamous slowly dying stock Calex charger on my S I am replacing soon. I was wondering if anyone could explain like I'm 5 (ELI5) how the slow decrease in maximum SOC happens. Well, maybe not 5, but assuming basic understanding of electrical components and circuits (resistor, capacitor, diode, transformer, etc.). As a first guess, it seems strange that it only charges up to, say 90%. Why does it not just stop charging?