README.md

---
license: mit
language:
  - en
tags:
  - battery
  - state-of-health
  - remaining-useful-life
  - time-series
  - regression
  - lstm
  - transformer
  - xgboost
  - lightgbm
  - random-forest
  - ensemble
datasets:
  - NASA-PCoE-Battery
metrics:
  - r2
  - mae
  - rmse
pipeline_tag: tabular-regression
---

# AI Battery Lifecycle — Model Repository

Trained model artifacts for the [aiBatteryLifeCycle](https://huggingface.co/spaces/NeerajCodz/aiBatteryLifeCycle) project.

SOH (State-of-Health) and RUL (Remaining Useful Life) prediction for lithium-ion batteries
trained on the NASA PCoE Battery Dataset.

## Repository Layout

```
artifacts/
├── v1/
│   ├── models/
│   │   ├── classical/   # Ridge, Lasso, ElasticNet, KNN ×3, SVR, XGBoost, LightGBM, RF
│   │   └── deep/        # Vanilla LSTM, Bi-LSTM, GRU, Attention-LSTM, TFT,
│   │                    # BatteryGPT, iTransformer, Physics-iTransformer,
│   │                    # DG-iTransformer, VAE-LSTM
│   └── scalers/         # MinMax, Standard, Linear, Sequence scalers
└── v2/
    ├── models/
    │   ├── classical/   # Same family + Extra Trees, Gradient Boosting, best_rul_model
    │   └── deep/        # Same deep models re-trained on v2 feature set
    ├── scalers/         # Per-model feature scalers
    └── results/         # Validation JSONs
```

## Model Performance Summary (v3)

| Rank | Model | R² | MAE | Family |
|------|-------|----|-----|--------|
| 1 | XGBoost | 0.9866 | 1.58 | Classical |
| 2 | GradientBoosting | 0.9860 | 1.38 | Classical |
| 3 | LightGBM | 0.9826 | 1.98 | Classical |
| 4 | RandomForest | 0.9814 | 1.83 | Classical |
| 5 | ExtraTrees | 0.9701 | 3.20 | Classical |
| 6 | TFT | 0.8751 | 3.88 | Transformer |
| 7 | Weighted Avg Ensemble | 0.8991 | 3.51 | Ensemble |

## Usage

These artifacts are automatically downloaded by the Space on startup via
`scripts/download_models.py`. You can also use them directly:

```python
from huggingface_hub import snapshot_download

local = snapshot_download(
    repo_id="NeerajCodz/aiBatteryLifeCycle",
    repo_type="model",
    local_dir="artifacts",
    token="<your-token>",   # only needed if private
)
```

## Framework

- **Classical models:** scikit-learn / XGBoost / LightGBM `.joblib`
- **Deep models (PyTorch):** `.pt` state-dicts (CPU weights)
- **Deep models (Keras):** `.keras` SavedModel format
- **Scalers:** scikit-learn `.joblib`

## Citation

```bibtex
@misc{aiBatteryLifeCycle2025,
  author  = {Neeraj},
  title   = {AI Battery Lifecycle — SOH/RUL Prediction},
  year    = {2025},
  url     = {https://huggingface.co/spaces/NeerajCodz/aiBatteryLifeCycle}
}
```