Multipurpose cell meter and battery capacity tester for LiPo / LiFe / Liion packs (27 cells) and single cells, plus NiCd / NiMH packs for TX and RX (47 cells). It quickly estimates lithium battery capacity and indicates whether charging is required before use. Battery types supported: NiCd / NiMH (47 cells) and lithium types (27 cells). Display modes: battery cell voltage, total pack voltage, lowest cell voltage, cell voltage, gap between and lowest cell voltage, and remaining capacity (percent). Practical applications: Check LiPo/LiFe/Liion packs (27 cells) to verify voltage balance and readiness. Read NiCd/NiMH packs (47 cells) for transmitters and receivers to ensure proper operation. Quickly assess if a lithium pack needs charging before use by estimating capacity and charging requirement. Benefits and features: compact, safe, and durable design with lightweight construction for easy handling. quality materials and reliable performance provide accurate voltage readings and capacity estimates in a small, easytouse device. Use scenarios: RC hobbyist preparing a model aircraft or drone: monitor LiPo balance and remaining capacity to ensure safe flight. Radio equipment maintenance: verify NiCd/NiMH TX/RX packs for correct cell count and voltage levels. Portable electronics upkeep: check lithium battery packs before charging to decide if charging is .