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i3 7.4 kW single-phase charging is implemented using two 3.7 kW on-board chargers. If one of these chargers fails, the maximum charging power is 3.7 kW (16A @ 230V). If you've eliminated all other potential reasons why 3.7 kW is the maximum AC charging power that your i3 will accept, one of your on-board chargers might have failed. This would certainly have stored diagnostic trouble codes (DTC's) that an OBD code reader would report.

[QUOTE="alohart, post: 81357, member: 1439"] i3 7.4 kW single-phase charging is implemented using two 3.7 kW on-board chargers. If one of these chargers fails, the maximum charging power is 3.7 kW (16A @ 230V). If you've eliminated all other potential reasons why 3.7 kW is the maximum AC charging power that your i3 will accept, one of your on-board chargers might have failed. This would certainly have stored diagnostic trouble codes (DTC's) that an OBD code reader would report. [/QUOTE]

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