Battery Usage Instructions Lithium battery: 1. The charging method for lithium batteries is completely different from that of mobile phone batteries. Lithium batteries have no memory effect, so they can be charged at any time, but avoid overcharging or over-discharging. 2. According to the green indicator light on the charger, you can unplug it, but do not overcharge.When the light level drops to a low point, please charge the battery promptly. Otherwise, over-discharging the battery can lead to issues such as battery leakage and failure to charge. 3. Special reminder: Use a charger with overcharge, reverse polarity, and short-circuit protection. 4. If the battery will not be used for an extended period, it should be fully charged before storage.Under normal circumstances, it should be recharged and discharged again after approximately three months. Dry cell battery: 1. Do not mix batteries of different models or brands 2. Install the battery correctly, ensuring the positive and negative terminals are aligned properly. Incorrect installation may cause the device to malfunction, or even lead to safety hazards such as short circuits or fires. 3. Avoid over-discharging the battery, as this may cause it to leak, which could damage the device or the surrounding environment. 4. If the device is not used for an extended period, be sure to remove the battery to prevent battery leakage. Common misconceptions about the product 1. Understanding the waterproof concept of flashlights: Waterproof means the flashlight can be used in rain or underwater, but it does not mean that it is completely impermeable to water. 2. Understanding Wattage: The wattage displayed on the product page represents the theoretical LED value, not the actual measured current or voltage. 3. Range and lifespan: These are theoretical values calculated based on estimations, and the actual values will vary depending on the specific lighting conditions and usage environment.