The 3000A charger with special firmware can accept an input voltage range of 85-270VAC and works in two latched operating profiles: 220V mode and 120V mode. The profile is chosen when AC power is connected, then held until AC is removed.
Wide AC input range enabled by the special firmware variant.
The charger boots into either a 220V profile or a 120V profile.
In 120V mode, full power is available from 120V up to 270V.
In 220V mode, the 85-160V region caps output current at 5A.
The overlap between the 120V and 220V operating windows is intentional. The charger does not continuously auto-switch between profiles while it is energized. It decides the mode once at AC plug-in and then follows that mode map until AC power is disconnected.
Once the startup decision is made, the charger follows the voltage and output limits of the selected profile shown below.
When the charger starts in 220V mode, it follows the 220V operating map until AC power is removed.
When the charger starts in 120V mode, it stays in that profile across the ranges below until AC is disconnected.
Mode selection happens at the moment the AC plug is inserted.
At AC plug-in, a grid voltage above 155V makes the charger start in the 220V profile.
At AC plug-in, a grid voltage below 145V makes the charger start in the 120V profile.
The charger does not change modes on the fly. AC power must be removed and re-applied for a new mode decision.
This page is mainly a field-reference map for input-voltage behavior.
This simulator models the startup hysteresis, mode latching, electrical derating, and 15A input-current ceiling of the special firmware charger. Change the grid voltage, connect AC, and watch the locked mode, telemetry, and derating curves update in real time.
Connect AC to evaluate the current grid voltage once.
Computed as Voltage x 15A x 0.99 PF x 0.92 Efficiency.
Keep moving between the support guides below to narrow the issue faster.
Understand the AC input path, PFC stage, DC-DC stage, relay, and thermal controls.
Read common answers on battery support, CAN customisation, warranty, standards, and OEM work.
Pick a symptom and follow the correct field checks before escalating to service.
