Features: 【Precise voltages Control】Employing 4.2V precise charging technology ensures stable battery charging and prevents damage from overcharging. 【Efficient Heat Dissipation Design】PVC offering excellent thermal conductivity, effectively preventing overheating during charging. 【Broad Compatibility】Supports charging requirements for multiple battery types,demands across various electronic devices. 【Convenient Portability】Lightweight design facilitates easy carrying, fitting effortlessly into a rucksack whether travelling for business or leisure. 【Safety protections Mechanism】Incorporates built-in overcurrent and short-circuit protections to safeguards charging operations. Specifications: Component: PVC Support：Type-C USB 0.5A 4.2V Battery Charging Board Size: As pictures suitable for various usage scenarios. Quantity: 2piece pack Supports 4.2V battery charging, ensuring efficient and stable charging Suitable for daily charging needs of consumer electronic devices, such as smartphones, tablets Package Includes: 2pcs 0.5A 4.2V battery charging board note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.