SECTION 3 FAQ Q: How do I select the charging mode? A: The charging mode is determined according to the battery type and capacity. We recommend that the current value should not be greater than 20% of the battery capacity value. For example, for a 20Ah battery, we recommend that the current should not be greater than 4A. Q: Will the TORNADO4000 stop charging automatically after the battery is fully charged? A: Yes. The TORNADO4000 adopts 9-step smart charging. When the battery is fully charged, the charging cycle stops to prevent overcharging.
If the battery remains connected, the charger will keep monitoring the battery status and will automatically start charging when the battery voltage falls below its target threshold. Q: Can the TORNADO4000 charge multiple batteries simultaneously? A: Yes. The batteries must be connected in series or parallel before charging. If you have questions about the connection, you can consult the battery manufacturer or EN 15 Optimum Battery Capacity Range (Ah) Battery Capacity (Ah) Charging Time (h) 12V/4A 12V1A NORM REP 5-120 15 40 60 80 120 3 10 7 25 10 38 13 50 20 75