Why does my DC fast charger show error code 104 and won't start a charging session?
Error code 104 on a DC fast charger typically means a communication failure between the charger and the vehicle's battery management system,…
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EV Fleet & Charging Infrastructure
Practical, step-by-step fixes for ev fleet & charging infrastructure problems — 75 published so far.
Why does my DC fast charger stop at 80% and show a communication error?
Your DC fast charger likely stops at 80% because the vehicle's battery management system limits charge rate to protect battery health, and…
See the fixWhy does my fleet DC fast charger keep dropping to 50 kW after a few minutes?
Your DC fast charger throttles speed because the battery management system limits charge rate as the battery warms up or reaches higher…
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Why does my fleet EV charger keep tripping the circuit breaker?
Your fleet EV charger trips the breaker because the circuit is overloaded, the breaker is worn out, or there's a ground fault…
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Why does my fleet EV charging station keep tripping the breaker?
A fleet EV charging station trips the breaker when it pulls more current than the circuit can safely handle, most often because…
See the fixWhy does my fleet's DC fast charger keep showing 'communication error' and aborting sessions?
A 'communication error' on a DC fast charger usually means the vehicle and charger can't complete the handshake — often caused by…
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Why does my fleet's DC fast charger keep tripping the 480V breaker during peak hours?
Your DC fast charger trips the 480V breaker during peak hours because the combined load of multiple chargers plus site demand exceeds…
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Why does my fleet's DC fast charger throttle to 50 kW after 10 minutes of charging?
Your DC fast charger throttles because its liquid-cooled cables or power modules overheat, triggering thermal protection that reduces output to protect hardware.…
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Why does my fleet's Level 2 EV charger keep tripping the breaker?
Your Level 2 charger is likely tripping the breaker because it's drawing more current than the circuit is rated for, or the…
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Why does my Level 2 commercial EV charger keep tripping the breaker?
Your Level 2 charger trips the breaker most often because the circuit is overloaded, the breaker is undersized, or there's a ground…
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Why does our depot's DC fast charger keep throttling to 50 kW instead of 150 kW?
Your DC fast charger throttles to 50 kW because the vehicle's battery management system limits charge rate when the pack is hot,…
See the fixWhy does our depot's Level 2 charger trip the breaker when two EVs charge simultaneously?
Your Level 2 charger trips because the combined draw of two vehicles exceeds the circuit's amperage rating, causing the breaker to protect…
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