Can the single-phase AC control board still schedule charging and adjust power when there is no network?

Conclusion first:

Scheduled Charging ✅  Yes (local RTC+memory)

power regulation ✅  Can be (4-speed current dip or local setting)

Prerequisite: The main control board comes with RTC battery and memory function, and does not require cloud connection.

1、 Booking charging - relying on "local RTC" instead of cloud

• The main control board is equipped with an RTC button battery (CR1220 standard), and the clock will continue to run for more than 3 years after power failure.

• Users can use:

• Swipe the card/press the button to set the "start time" on the stake, or

• Bluetooth local app (not connected to the external network) release time slot

• The parameters are stored in EEPROM, automatically compared with RTC when powered on, and the relay is closed when the point is reached.

• On site verification: Bull D3-B32A, Zhida Pioneer and other household piles all support "offline reservation", regardless of whether there is 4G/Wi Fi.

2、 Power regulation - accomplished through "dialing+memory"

• The main control board reserves 4 levels of current dip codes (8A/16A/24A/32A), which can remember the latest level in case of power failure without the need for network transmission.

• Some models support Bluetooth local settings and can also change the current without connecting to the external network.

• The measuring chip (ATT7022E, etc.) performs real-time sampling, and the MCU closes the loop current limit according to the set gear to ensure no overload.

3、 Restrictions without network

• Remote start stop, sharing, OTA upgrade, and plug and play certificate chain are not available;

• But local reservation, local power adjustment, card swiping start stop, and Bluetooth no sensing are all normal - there is no missing core function in home scenarios.

one-sentence summary

Without network, the single-phase AC main control board can still perform "timed reservation+4-speed power adjustment", relying on RTC and local memory; The remote function requires internet connection, so even without a signal, the basement can be charged with peace of mind.

Xincheng Technology's single-phase 7KW AC charging pile main control board is of high quality, excellent performance, and high efficiency. Welcome to consult and purchase!