1. Which types of vehicles is this jump starter suitable for? Night Essence is suitable for all 12V vehicles, including cars, trucks, motorcycles, boats, RVs, tractors, ATVs, UTVs, lawnmowers, snowmobiles, and more. 2. How do you know if this unit is connected to the vehicle correctly? With the battery clamps connected to the vehicle battery, when the main indicator light on the jumper cable shines a steady green light, it means it's connected correctly. If RC indicator red light is on, it means it‘s the reverse connection. 3. How often does this unit need to recharge? It would be best to be recharged every 3 months. 4. How does this car jump starter achieve its forced start function, and when can it be useful? Equipped with advanced high-current output, it can forcibly start your car's engine even when the battery is completely dead. Ideal for drained batteries, cold weather, or unexpected failures. 5. How do I properly use the forced start feature? Connect fully charged jump starter to your car battery. Activate the forced start mode (as per manual). Start your car. Disconnect immediately after. Remember to recharge your car battery afterward.