Versatile boost charger for 2S, 3S, and 4S lithium battery modules Key benefits Flexible voltage conversion: from a 3.7V or 5V TypeC input, it delivers precise 8.4V, 12.6V, or 16.8V output to charge 2S, 3S, or 4S packs. Safe and reliable operation: builtin overvoltage protection and clear LED indicators support secure charging across a wide temperature range (40°C to +85°C). Adaptable charging current: choose between 1A or 2A input variants, with corresponding charging currents up to 2.2A to balance speed and battery health. Compact, spaceefficient design: an efficient stepup converter board that provides stable voltage boosting in limited spaces. Broad compatibility and performance: suitable for various lithium polymer and Liion battery configurations, enabling dependable charging in compact installations. What it does Converts a lowvoltage input (3.7V or 5V TypeC) into higher, batteryready voltages (8.4V, 12.6V, or 16.8V) to charge 2S, 3S, or 4S packs. Delivers stable boosted voltage for LiPo and Liion configurations when space is limited, improving reliability in portable or enclosed setups. Specifications at a glance Input: 3.7V/5V TypeC Output: 8.4V, 12.6V, or 16.8V Battery compatibility: 2S, 3S, and 4S lithium battery modules Temperature range: 40°C to +85°C Safety: builtin overvoltage protection; LED indicators Current options: 1A or 2A input versions with up to 2.2A charging current Type: stepup converter board Design focus: stable voltage boosting for LiPo and Liion configurations in limited spaces Use scenarios Field charging for RC hobby items: power a 2S/3S/4S LiPo pack from a USBC source (3.7V/5V input) during outdoor sessions or on the fly. Compact power solutions: use in a small portable power bank or embedded system to provide a reliable boosted voltage for Liion packs in tight enclosures. Robotics and educational projects: implement a stable boosted supply for LiPo/Liion configurations where space is at a , such as micro drones, small robots, or testing rigs. This boost charger maintains a professional, dependable profile, aligning with the original specifications and functional intent while presenting the information in a clear, customerfriendly format.