The RSNS1 and RSNS2 are current sense resistors. 10 mΩ should be used for RSNS1 to sense IBUS current, 5 mΩ or 10 mΩ used for RSNS2 to sense IBAT current (10 mΩ supports higher battery current limit accuracy, and 5 mΩ supports higher efficiency). Resistor of 1% or higher accuracy and low temperature coefficient is recommended.Note: If the user wants to use other resistor values, please contact factory for support.The resistor power rating and temperature coefficient should be considered. The power dissipation is roughly calculated as P=I2R, and I is the highest current flowing through the resistor. The resistor power rating should be higher than the calculated value.Normally the resistor value is varied if the temperature increased and the variation is decided by temperature coefficient. If high accuracy of current limit is required, select lower temperature coefficient resistor as much as possible.