diff --git a/tests/example.ckpt b/tests/example.ckpt
index 80f914696..886cd39cf 100644
Binary files a/tests/example.ckpt and b/tests/example.ckpt differ
diff --git a/tests/test_calculator.py b/tests/test_calculator.py
index 96d93d852..b4c5d0a3f 100644
--- a/tests/test_calculator.py
+++ b/tests/test_calculator.py
@@ -3,7 +3,7 @@
 # (See accompanying file README.md file or copy at http://opensource.org/licenses/MIT)
 
 import torch
-from torch.testing import assert_allclose
+from torch.testing import assert_close
 import pytest
 from os.path import dirname, join
 from torchmdnet.calculators import External
@@ -11,6 +11,12 @@
 
 from utils import create_example_batch
 
+# Set relative and absolute tolerance values for float32 precision
+# The original test used assert_allclose, which is now deprecated.
+# assert_close is used instead, with default tolerances of 1e-5 (rtol) and 1.3e-6 (atol) for torch.float32.
+# Here, we manually set rtol and atol to match the original test's tolerances.
+rtol = 1e-4
+atol = 1e-5
 
 @pytest.mark.parametrize("box", [None, torch.eye(3)])
 @pytest.mark.parametrize("use_cuda_graphs", [True, False])
@@ -39,24 +45,24 @@ def test_compare_forward(box, use_cuda_graphs):
         "precision": 32,
     }
     device = "cpu" if not use_cuda_graphs else "cuda"
-    model = create_model(args).to(device=device)
+    c_model = load_model(checkpoint).to(device=device)
+    g_model = load_model(checkpoint, check_errors=not use_cuda_graphs, static_shapes=use_cuda_graphs).to(device=device)
     z, pos, _ = create_example_batch(multiple_batches=False)
     z = z.to(device)
     pos = pos.to(device)
-    calc = External(checkpoint, z.unsqueeze(0), use_cuda_graph=False, device=device)
+    calc = External(c_model, z.unsqueeze(0), use_cuda_graph=False, device=device)
     calc_graph = External(
-        checkpoint, z.unsqueeze(0), use_cuda_graph=use_cuda_graphs, device=device
+        g_model, z.unsqueeze(0), use_cuda_graph=use_cuda_graphs, device=device
     )
-    calc.model = model
-    calc_graph.model = model
+    
     if box is not None:
         box = (box * 2 * args["cutoff_upper"]).unsqueeze(0)
+    
     for _ in range(10):
         e_calc, f_calc = calc.calculate(pos, box)
         e_pred, f_pred = calc_graph.calculate(pos, box)
-        assert_allclose(e_calc, e_pred)
-        assert_allclose(f_calc, f_pred)
-
+        assert_close(e_calc, e_pred, rtol=rtol, atol=atol)
+        assert_close(f_calc, f_pred, rtol=rtol, atol=atol)
 
 def test_compare_forward_multiple():
     checkpoint = join(dirname(dirname(__file__)), "tests", "example.ckpt")
@@ -72,5 +78,5 @@ def test_compare_forward_multiple():
         torch.cat([torch.zeros(len(z1)), torch.ones(len(z2))]).long(),
     )
 
-    assert_allclose(e_calc, e_pred)
-    assert_allclose(f_calc, f_pred.view(-1, len(z1), 3))
+    assert_close(e_calc, e_pred, rtol=rtol, atol=atol)
+    assert_close(f_calc, f_pred.view(-1, len(z1), 3), rtol=rtol, atol=atol)
diff --git a/tests/test_examples.py b/tests/test_examples.py
index 8cd5155e6..c772776a2 100644
--- a/tests/test_examples.py
+++ b/tests/test_examples.py
@@ -27,4 +27,4 @@ def test_example_yamls(fname):
 
     z, pos, batch = create_example_batch()
     model(z, pos, batch)
-    model(z, pos, batch, q=None, s=None)
+    model(z, pos, batch, q=None, s=None, extra_args=None)
diff --git a/tests/test_model.py b/tests/test_model.py
index f606559ef..cde034a08 100644
--- a/tests/test_model.py
+++ b/tests/test_model.py
@@ -19,16 +19,21 @@
 @mark.parametrize("model_name", models.__all_models__)
 @mark.parametrize("use_batch", [True, False])
 @mark.parametrize("explicit_q_s", [True, False])
+@mark.parametrize("explicit_extra_args", [True, False])
 @mark.parametrize("precision", [32, 64])
-def test_forward(model_name, use_batch, explicit_q_s, precision):
+def test_forward(model_name, use_batch, explicit_q_s, explicit_extra_args, precision):
     z, pos, batch = create_example_batch()
     pos = pos.to(dtype=dtype_mapping[precision])
     model = create_model(
         load_example_args(model_name, prior_model=None, precision=precision)
     )
     batch = batch if use_batch else None
-    if explicit_q_s:
+    if explicit_q_s and explicit_extra_args:
+        model(z, pos, batch=batch, q=None, s=None, extra_args=None)
+    elif explicit_q_s:
         model(z, pos, batch=batch, q=None, s=None)
+    elif explicit_extra_args:
+        model(z, pos, batch=batch, extra_args=None)
     else:
         model(z, pos, batch=batch)
 
diff --git a/torchmdnet/datasets/hdf.py b/torchmdnet/datasets/hdf.py
index c647b7d2a..8bbaac2d6 100644
--- a/torchmdnet/datasets/hdf.py
+++ b/torchmdnet/datasets/hdf.py
@@ -49,6 +49,10 @@ def __init__(self, filename, dataset_preload_limit=1024, **kwargs):
                             ("pos", "pos", torch.float32),
                             ("z", "types", torch.long),
                         ]
+                        if "charge" in group:
+                            self.fields.append(("q", "charge", torch.float32))
+                        if "spin" in group:
+                            self.fields.append(("s", "spin", torch.float32))
                         if "energy" in group:
                             self.fields.append(("y", "energy", torch.float32))
                         if "forces" in group:
diff --git a/torchmdnet/datasets/memdataset.py b/torchmdnet/datasets/memdataset.py
index c84d65590..f25f5a825 100644
--- a/torchmdnet/datasets/memdataset.py
+++ b/torchmdnet/datasets/memdataset.py
@@ -269,7 +269,7 @@ def get(self, idx):
         if "q" in self.properties:
             props["q"] = pt.tensor(self.mmaps["q"][idx], dtype=pt.long)
         if "pq" in self.properties:
-            props["pq"] = pt.tensor(self.mmaps["pq"][atoms])
+            props["partial_charges"] = pt.tensor(self.mmaps["pq"][atoms])
         if "dp" in self.properties:
             props["dp"] = pt.tensor(self.mmaps["dp"][idx])
         # if "mol_idx" in self.properties:
diff --git a/torchmdnet/models/model.py b/torchmdnet/models/model.py
index b7c8398cc..29ef7a232 100644
--- a/torchmdnet/models/model.py
+++ b/torchmdnet/models/model.py
@@ -460,7 +460,8 @@ def forward(
             pos.requires_grad_(True)
         # run the potentially wrapped representation model
         x, v, z, pos, batch = self.representation_model(
-            z, pos, batch, box=box, q=q, s=s
+            z, pos, batch, box=box, q=q, s=s, extra_args=extra_args
+
         )
         # apply the output network
         x = self.output_model.pre_reduce(x, v, z, pos, batch)
diff --git a/torchmdnet/models/tensornet.py b/torchmdnet/models/tensornet.py
index 9aec148ca..7bae31d24 100644
--- a/torchmdnet/models/tensornet.py
+++ b/torchmdnet/models/tensornet.py
@@ -3,7 +3,7 @@
 # (See accompanying file README.md file or copy at http://opensource.org/licenses/MIT)
 
 import torch
-from typing import Optional, Tuple
+from typing import Optional, Tuple, Dict
 from torch import Tensor, nn
 from torchmdnet.models.utils import (
     CosineCutoff,
@@ -61,6 +61,32 @@ def tensor_norm(tensor):
     """Computes Frobenius norm."""
     return (tensor**2).sum((-2, -1))
 
+def process_additional_labels(z: torch.Tensor, q: Optional[torch.Tensor], s: Optional[torch.Tensor], extra_args: Optional[Dict[str, torch.Tensor]], batch: torch.Tensor) -> torch.Tensor:
+    """
+    Process additional labels for the model. This function assigns atom-wise properties based on the provided
+    molecule-wise properties or extra arguments.
+    Total charge q and spin s are molecule-wise properties. We transform it into an atom-wise property, with all atoms 
+    belonging to the same molecule being assigned the same charge q or spin s.
+
+    Args:
+        batch (Tensor): Batch tensor indicating the molecule each atom belongs to.
+        z (Tensor): Atomic numbers tensor.
+        q (Optional[Tensor]): Total charge tensor for each molecule.
+        s (Optional[Tensor]): Spin tensor for each molecule.
+        extra_args (Optional[Dict[str, Tensor]]): Dictionary containing additional properties.
+
+    Returns:
+        Tensor: Atom-wise property tensor already scaled by 0.1.
+    """
+    if q is not None:
+        t = q[batch]
+    elif s is not None:
+        t = s[batch]
+    elif extra_args is not None and 'partial_charges' in extra_args:
+        t = extra_args['partial_charges']
+    else:
+        t = torch.zeros_like(z, device=z.device, dtype=z.dtype)
+    return t
 
 class TensorNet(nn.Module):
     r"""TensorNet's architecture. From
@@ -226,6 +252,7 @@ def forward(
         box: Optional[Tensor] = None,
         q: Optional[Tensor] = None,
         s: Optional[Tensor] = None,
+        extra_args: Optional[Dict[str, Tensor]] = None,
     ) -> Tuple[Tensor, Optional[Tensor], Tensor, Tensor, Tensor]:
         # Obtain graph, with distances and relative position vectors
         edge_index, edge_weight, edge_vec = self.distance(pos, batch, box)
@@ -234,16 +261,13 @@ def forward(
             edge_vec is not None
         ), "Distance module did not return directional information"
         # Distance module returns -1 for non-existing edges, to avoid having to resize the tensors when we want to ensure static shapes (for CUDA graphs) we make all non-existing edges pertain to a ghost atom
-        # Total charge q is a molecule-wise property. We transform it into an atom-wise property, with all atoms belonging to the same molecule being assigned the same charge q
-        if q is None:
-            q = torch.zeros_like(z, device=z.device, dtype=z.dtype)
-        else:
-            q = q[batch]
+        
+        t = process_additional_labels(z, q, s, extra_args, batch)
         zp = z
         if self.static_shapes:
             mask = (edge_index[0] < 0).unsqueeze(0).expand_as(edge_index)
             zp = torch.cat((z, torch.zeros(1, device=z.device, dtype=z.dtype)), dim=0)
-            q = torch.cat((q, torch.zeros(1, device=q.device, dtype=q.dtype)), dim=0)
+            t = torch.cat((t, torch.zeros(1, device=z.device, dtype=z.dtype)), dim=0)
             # I trick the model into thinking that the masked edges pertain to the extra atom
             # WARNING: This can hurt performance if max_num_pairs >> actual_num_pairs
             edge_index = edge_index.masked_fill(mask, z.shape[0])
@@ -258,7 +282,7 @@ def forward(
         edge_vec = edge_vec / edge_weight.masked_fill(mask, 1).unsqueeze(1)
         X = self.tensor_embedding(zp, edge_index, edge_weight, edge_vec, edge_attr)
         for layer in self.layers:
-            X = layer(X, edge_index, edge_weight, edge_attr, q)
+            X = layer(X, edge_index, edge_weight, edge_attr, t)
         I, A, S = decompose_tensor(X)
         x = torch.cat((tensor_norm(I), tensor_norm(A), tensor_norm(S)), dim=-1)
         x = self.out_norm(x)
@@ -454,7 +478,7 @@ def forward(
         edge_index: Tensor,
         edge_weight: Tensor,
         edge_attr: Tensor,
-        q: Tensor,
+        t: Tensor,
     ) -> Tensor:
         C = self.cutoff(edge_weight)
         for linear_scalar in self.linears_scalar:
@@ -481,7 +505,7 @@ def forward(
         if self.equivariance_invariance_group == "O(3)":
             A = torch.matmul(msg, Y)
             B = torch.matmul(Y, msg)
-            I, A, S = decompose_tensor((1 + 0.1 * q[..., None, None, None]) * (A + B))
+            I, A, S = decompose_tensor((1 + 0.1 * t[..., None, None, None]) * (A + B))
         if self.equivariance_invariance_group == "SO(3)":
             B = torch.matmul(Y, msg)
             I, A, S = decompose_tensor(2 * B)
@@ -491,5 +515,5 @@ def forward(
         A = self.linears_tensor[4](A.permute(0, 2, 3, 1)).permute(0, 3, 1, 2)
         S = self.linears_tensor[5](S.permute(0, 2, 3, 1)).permute(0, 3, 1, 2)
         dX = I + A + S
-        X = X + dX + (1 + 0.1 * q[..., None, None, None]) * torch.matrix_power(dX, 2)
+        X = X + dX + (1 + 0.1 * t[..., None, None, None]) * torch.matrix_power(dX, 2)
         return X
diff --git a/torchmdnet/models/torchmd_et.py b/torchmdnet/models/torchmd_et.py
index 5ff168d54..4b84b16b8 100644
--- a/torchmdnet/models/torchmd_et.py
+++ b/torchmdnet/models/torchmd_et.py
@@ -2,7 +2,7 @@
 # Distributed under the MIT License.
 # (See accompanying file README.md file or copy at http://opensource.org/licenses/MIT)
 
-from typing import Optional, Tuple
+from typing import Optional, Tuple, Dict
 import torch
 from torch import Tensor, nn
 from torchmdnet.models.utils import (
@@ -196,6 +196,7 @@ def forward(
         box: Optional[Tensor] = None,
         q: Optional[Tensor] = None,
         s: Optional[Tensor] = None,
+        extra_args: Optional[Dict[str, Tensor]] = None,
     ) -> Tuple[Tensor, Tensor, Tensor, Tensor, Tensor]:
         x = self.embedding(z)
 
diff --git a/torchmdnet/models/torchmd_gn.py b/torchmdnet/models/torchmd_gn.py
index 31d68ae03..97939c67e 100644
--- a/torchmdnet/models/torchmd_gn.py
+++ b/torchmdnet/models/torchmd_gn.py
@@ -2,7 +2,7 @@
 # Distributed under the MIT License.
 # (See accompanying file README.md file or copy at http://opensource.org/licenses/MIT)
 
-from typing import Optional, Tuple
+from typing import Optional, Tuple, Dict
 import torch
 from torch import Tensor, nn
 from torchmdnet.models.utils import (
@@ -196,8 +196,9 @@ def forward(
         pos: Tensor,
         batch: Tensor,
         box: Optional[Tensor] = None,
-        s: Optional[Tensor] = None,
         q: Optional[Tensor] = None,
+        s: Optional[Tensor] = None,
+        extra_args: Optional[Dict[str, Tensor]] = None,
     ) -> Tuple[Tensor, Optional[Tensor], Tensor, Tensor, Tensor]:
         x = self.embedding(z)
 
diff --git a/torchmdnet/models/torchmd_t.py b/torchmdnet/models/torchmd_t.py
index c11efc080..1360ae432 100644
--- a/torchmdnet/models/torchmd_t.py
+++ b/torchmdnet/models/torchmd_t.py
@@ -2,7 +2,7 @@
 # Distributed under the MIT License.
 # (See accompanying file README.md file or copy at http://opensource.org/licenses/MIT)
 
-from typing import Optional, Tuple
+from typing import Optional, Tuple, Dict
 import torch
 from torch import Tensor, nn
 from torchmdnet.models.utils import (
@@ -190,8 +190,9 @@ def forward(
         pos: Tensor,
         batch: Tensor,
         box: Optional[Tensor] = None,
-        s: Optional[Tensor] = None,
         q: Optional[Tensor] = None,
+        s: Optional[Tensor] = None,
+        extra_args: Optional[Dict[str, Tensor]] = None,
     ) -> Tuple[Tensor, Optional[Tensor], Tensor, Tensor, Tensor]:
         x = self.embedding(z)
 
diff --git a/torchmdnet/models/wrappers.py b/torchmdnet/models/wrappers.py
index 444805e06..99c838527 100644
--- a/torchmdnet/models/wrappers.py
+++ b/torchmdnet/models/wrappers.py
@@ -3,7 +3,7 @@
 # (See accompanying file README.md file or copy at http://opensource.org/licenses/MIT)
 
 from abc import abstractmethod, ABCMeta
-from typing import Optional, Tuple
+from typing import Optional, Tuple, Dict
 from torch import nn, Tensor
 
 
@@ -45,8 +45,9 @@ def forward(
         batch: Tensor,
         q: Optional[Tensor] = None,
         s: Optional[Tensor] = None,
+        extra_args: Optional[Dict[str, Tensor]] = None,
     ) -> Tuple[Tensor, Optional[Tensor], Tensor, Tensor, Tensor]:
-        x, v, z, pos, batch = self.model(z, pos, batch=batch, q=q, s=s)
+        x, v, z, pos, batch = self.model(z, pos, batch=batch, q=q, s=s, extra_args=extra_args)
 
         n_samples = len(batch.unique())
 
diff --git a/torchmdnet/module.py b/torchmdnet/module.py
index 8042df514..f8453af1b 100644
--- a/torchmdnet/module.py
+++ b/torchmdnet/module.py
@@ -59,6 +59,14 @@ def __init__(self, loss_fn, extra_args=None):
     def __call__(self, x, batch):
         return self.loss_fn(x, batch, **self.extra_args)
 
+def process_extra_args(extra_args, use_partial_charges):
+    ''' Process extra arguments to remove those that are not needed by the model, before passing them to the forward function.'''
+    for a in ("y", "neg_dy", "z", "pos", "batch", "box", "q", "s"):
+        if a in extra_args:
+            del extra_args[a]
+    if not use_partial_charges and 'partial_charges' in extra_args:
+        del extra_args['partial_charges']
+    return extra_args
 
 class LNNP(LightningModule):
     """
@@ -77,6 +85,13 @@ def __init__(self, hparams, prior_model=None, mean=None, std=None):
             hparams["charge"] = False
         if "spin" not in hparams:
             hparams["spin"] = False
+        if "partial_charges" not in hparams:
+            hparams["partial_charges"] = False
+        # Ensure only one of charge, partial_charges, and spin can be True, otherwise raise a ValueError
+        if sum([hparams["charge"], hparams["partial_charges"], hparams["spin"]]) > 1:
+            raise ValueError(
+            "Only one of 'charge', 'partial_charges', and 'spin' can be True."
+            )
         if "train_loss" not in hparams:
             hparams["train_loss"] = "mse_loss"
         if "train_loss_arg" not in hparams:
@@ -184,9 +199,7 @@ def predict_step(self, batch, batch_idx):
 
         with torch.set_grad_enabled(self.hparams.derivative):
             extra_args = batch.to_dict()
-            for a in ("y", "neg_dy", "z", "pos", "batch", "box", "q", "s"):
-                if a in extra_args:
-                    del extra_args[a]
+            extra_args = process_extra_args(extra_args, self.hparams.partial_charges)
             return self(
                 batch.z,
                 batch.pos,
@@ -253,9 +266,7 @@ def step(self, batch, loss_fn_list, stage):
         batch = self.data_transform(batch)
         with torch.set_grad_enabled(stage == "train" or self.hparams.derivative):
             extra_args = batch.to_dict()
-            for a in ("y", "neg_dy", "z", "pos", "batch", "box", "q", "s"):
-                if a in extra_args:
-                    del extra_args[a]
+            extra_args = process_extra_args(extra_args, self.hparams.partial_charges)
             # TODO: the model doesn't necessarily need to return a derivative once
             # Union typing works under TorchScript (https://github.com/pytorch/pytorch/pull/53180)
             y, neg_dy = self(
diff --git a/torchmdnet/optimize.py b/torchmdnet/optimize.py
index 0c7f56513..a59705e50 100644
--- a/torchmdnet/optimize.py
+++ b/torchmdnet/optimize.py
@@ -2,7 +2,8 @@
 # Distributed under the MIT License.
 # (See accompanying file README.md file or copy at http://opensource.org/licenses/MIT)
 
-from typing import Optional, Tuple
+from typing import Optional, Tuple, Dict
+from torch import Tensor
 import torch as pt
 from NNPOps.CFConv import CFConv
 from NNPOps.CFConvNeighbors import CFConvNeighbors
@@ -58,6 +59,7 @@ def forward(
         box: Optional[pt.Tensor] = None,
         q: Optional[pt.Tensor] = None,
         s: Optional[pt.Tensor] = None,
+        extra_args: Optional[Dict[str, Tensor]] = None,
     ) -> Tuple[pt.Tensor, Optional[pt.Tensor], pt.Tensor, pt.Tensor, pt.Tensor]:
 
         assert pt.all(batch == 0)
diff --git a/torchmdnet/scripts/train.py b/torchmdnet/scripts/train.py
index 96b3a8197..f56c3fb5a 100644
--- a/torchmdnet/scripts/train.py
+++ b/torchmdnet/scripts/train.py
@@ -85,6 +85,7 @@ def get_argparse():
     # architectural args
     parser.add_argument('--charge', type=bool, default=False, help='Model needs a total charge. Set this to True if your dataset contains charges and you want them passed down to the model.')
     parser.add_argument('--spin', type=bool, default=False, help='Model needs a spin state. Set this to True if your dataset contains spin states and you want them passed down to the model.')
+    parser.add_argument('--partial-charges', type=bool, default=False, help='Model needs partial charges. Set this to True if your dataset contains partial charges and you want them passed down to the model.')
     parser.add_argument('--embedding-dimension', type=int, default=256, help='Embedding dimension')
     parser.add_argument('--num-layers', type=int, default=6, help='Number of interaction layers in the model')
     parser.add_argument('--num-rbf', type=int, default=64, help='Number of radial basis functions in model')