1. One-click repair mode for charging: Uses high and low frequency pulses to repair discharged or "dead" batteries (only applicable to 12V lead-acid batteries; not usable for 6V or 12V lithium-iron batteries). 2. Winter/Summer mode: The charger automatically detects the ambient temperature to switch to the appropriate mode, ensuring a full charge in winter and preventing overcharging in summer. 3. Digital display: Cyclically displays the current voltage, current, charge level, and ambient temperature. 4. Short-circuit protection: In the event of an accidental short circuit in the output cable, the machine automatically shuts off the output. 5. Reverse polarity protection: If the polarities of the charger's output cable and the battery are reversed, the charger automatically shuts off the output and displays a warning icon. The protection automatically deactivates after a correct connection. 5. Multi-stage charging: Preliminary load detection + constant current mode + constant voltage mode + pulse mode + float charging mode + automatic shut-off once charging is complete.
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