1. A battery state-of-charge indicator for electric wheelchairs
2. Techniques for estimating the residual range of an electric vehicle
3. Floyd, K. D., Noworolski, Z., Noworolski, J. M. and Sokolski, W. “Assessment of Lead‐Acid Battery SOC by Monitoring Float Charging Current,”. Proceedings of 16th International Telecommunications Energy Conference. Vancouver, Canada. pp.602–608.
4. Konya, Y., Takeda, T., Takano, K., Kohno, M., Yotsumoto, K. and Ogata, T. “A Deterioration Estimating System for 200ah Sealed Lead‐Acid Batteries,”. 16th International Telecommunications Energy Conference. pp.256–262.