Why is the DC charging speed limited after 11 PM or when BESS is empty?

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DC Charging Speed Reduction Explained

The DC charging speed at the ChargEV KLGCC Resort station is intentionally reduced to 30kW after 11:00 PM or when the Battery Energy Storage System (BESS) batteries are depleted. This measure is implemented to facilitate the recharging of the BESS itself. The system relies on grid power to replenish its energy reserves during these periods.
BESS Recharging Protocol

The primary reason for the slower DC charging speeds is to allow the integrated Battery Energy Storage System (BESS) to recuperate its energy. When the BESS is empty, or during the specified nighttime hours, the station prioritizes drawing power from the grid to charge these batteries. This ensures the BESS is ready for subsequent use at its optimal capacity.
Operational Limitations

A notice within the ChargEV application indicates this speed reduction. The limitation is applied to allow the BESS batteries to recharge. However, the specific timeframe for when the DC charging speed returns to its maximum of 120kW each day, or the duration required for a completely depleted BESS to recharge, is not detailed in the available information.
System Components and Dependencies

The BESS at the KLGCC Resort station comprises two 215kWh LFP batteries manufactured by Reactive Energy, with batteries likely supplied by EVE Energy. Unlike some other BESS implementations that utilize both grid and solar power for recharging, this particular system appears to rely solely on the grid. This dependency underscores the necessity of the speed reduction to manage energy flow for battery replenishment.

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Why is the DC charging speed limited after 11 PM or when BESS is empty?

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