The recommended PCB layout for the DS2782E+ involves placing the device near the battery, using a solid ground plane, and keeping the sense lines short and away from noise sources. A 4-layer PCB with a dedicated ground plane is recommended.
The DS2782E+ does not require calibration. It is a self-contained fuel gauge that uses a proprietary algorithm to estimate the battery's state of charge. However, the device does require a one-time initialization process to learn the battery's characteristics.
The DS2782E+ has an accuracy of ±1% for the state of charge (SOC) measurement and ±0.5% for the voltage measurement. The device also has a temperature accuracy of ±2°C.
The DS2782E+ is designed to work with a single battery. If you need to monitor multiple batteries, you will need to use multiple DS2782E+ devices, one for each battery.
The DS2782E+ has a 'learn' mode that allows it to adapt to a new battery. When a new battery is inserted, the device will automatically detect the change and re-learn the battery's characteristics.