Do we know what exactly is failing on these chargers?
The chargers do get hot and don't have active cooling. I'm inclined to believe that contributes to the failures. And I'm not convinced the generated heat is harmless for the battery above them either.
I avoid charging in hot weather, so I often forgo charging at work and instead am charging mainly at home in a cool garage, and having a fan create active air circulation at the charger/battery.
Kocho - I also think heat is the primary killer of these chargers. My stock cable got hot from it's first use. After a month or so, I became so concerned about the heat, I started using an external fan to keep the cable cool whenever I charged - only the cable, not so much for the charger. I touched the bottom of the bike under the charger and discovered it was quite hot. My thought at the time was - It must be OK because Zero performed the necessary R&D to make it OK. I wish now I had redirected the airflow to include the charger. When the bike returns, I will use the fan to cool both.
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Those who have charger failures - it'd be interesting to know if you kept the bikes plugged in most of the time and whether you charge in warm or hot weather.
Kocho - My charger usage -
Charge cycles, I think about 500. When the bike returns, I'll include the number is my final update.
Charged - almost everyday.
Bike is stored outside, but always under cover, thus the annual temps here normally range from about 25f to 102f.
Charging - I use a timer to turn the charger off when finished. I calculate the time required and add one hour to the timer to ensure the bike fully charged for the next day.
Bike usage - I will ride as long as the payment is dry. Temps, extreme cold or hot is not a deterrent thus the bike is charged most days.
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My 2014 S charger is still hanging in there after 10K miles and a lot of charging for short period of times....
Richard - 10k is not very much, neither is 17K (my failure).
Fan idea - I think Kocho is dead on with the fan idea cooling the charger.
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(On my bike, it bulk charges to 98% and then shuts down for about 30 hours. Then it completes charging and balancing the pack to 100%....
Richard - Is this normal? Shouldn't it charge until it finishes? Not take a break for 30 hours, then finishes. Mine used to charge until it was finished. I wonder if anyone else has experienced the same as yourself.
Chargers should be included in the power pack warranty, what's the point of 5years warranty on power pack if you can't charge it.
firepower - +1