: The user "RDC" on Acidmods has reverse-engineered and shared the most accurate JDM-055 Schematic available to the public. Downloadable PDF
If the battery gauge loses its configuration (e.g., after a dead battery replacement), the controller will always report 0% or fail to turn on. The schematic will show you the pull-up resistors (typically 10kΩ to 3.3V) and test points for reprogramming the gauge via an I2C programmer. jdm-055 motherboard schematic
: Ensure the 12-pin ribbon cable connecting the JDS-055 board to the main Go to product viewer dialog for this item. board is properly seated and not frayed. 3. Community Resources & Diagrams : The user "RDC" on Acidmods has reverse-engineered
Enhanced protection circuitry to prevent damage from static discharge. Key Sections of the JDM-055 Schematic after a dead battery replacement)