State-of-Health Estimation for Lithium-Ion Battery Based on an Attention-Based CNN-GRU Model with Reconstructed Feature Series

Table 1

Average RMSE and MAE based on different starting point.

Initial voltage	RMSE (%)	MAE (%)
3.75 V	0.808	0.732
3.8 V	0.782	0.669
3.85 V	0.890	0.843
3.9 V	1.285	1.181
3.95 V	1.205	1.057
4.0 V	1.061	0.935