General description 18650 12.6V 500mA lithium battery charger designed for headlight and flashlight applications. This smart charger effectively eliminates interference on devices while maintaining high reliability. Technical specifications Input voltage range: Wide and meets world standards Output voltage: 4.2V Charging current: 500mA Protection features: Short circuit, overcurrent, overcharge, overvoltage Operating temperature: Low Material: High-quality environmental protection material Installation Simple and compact design Easy to install, plug and play Usage Regulated for proper charging current Fully protects the battery from overcharge, overcurrent, and short circuit effects