accurate battery tester This module accurately reads the battery level using a voltage detection chip, providing reliable results. Bright LED indicators Four LEDs in different colors offer a clear, ataglance display of remaining battery capacity for easy monitoring. Fourphase design The module uses four colored phases to indicate different battery levels, enabling quick assessment of remaining charge. Easy installation Designed with one battery detection interface and two positioning holes for straightforward mounting. Suggested use scenarios In DIY electronics projects to monitor battery status during assembly or testing. For battery packs in portable devices to gauge remaining charge before use or replacement. In routine maintenance of equipment that uses removable batteries to quickly verify status. Key attributes reflected Function: accurate battery level reading via voltage detection chip; clear status via multicolor LEDs. Performance: reliable, ataglance indication of battery levels through a fourphase color design. Installation: simple mounting with a single detection interface and two positioning holes.