Versatile charging solution for 2S, 3S and 4S lithium battery modules. This boost charger converts 3.7V or 5V TypeC input into precise 8.4V, 12.6V or 16.8V output for reliable power delivery. Advanced safety mechanism. Builtin overvoltage protection and clear LED indicators help maintain secure operation. Designed to operate across a wide temperature range from 40C to +85C. Multiple current options. Choose between 1A or 2A input versions with corresponding charging currents up to 2.2A. This enables faster charging cycles while preserving battery health. Compact management. An efficient stepup converter board provides stable voltage boosting for various lithium polymer and Liion battery configurations in space constrained applications. 23 practical use scenarios Field charging of 2S, 3S or 4S LiPo packs from a USBC power source, suitable for drones, RC vehicles or portable devices that require higher voltage from a low voltage input. Space constrained robotics or portable electronics where a compact boost charger is used to deliver the required charge voltage to LiPo or Liion configurations without bulk. Bench or workshop charging and prototyping workflows, enabling safe, controlled charging with visible status indicators from a 3.7V/5V input source.