diff --git a/ocf_data_sampler/numpy_batch/satellite.py b/ocf_data_sampler/numpy_batch/satellite.py
index c4c8d5b..6cdb270 100644
--- a/ocf_data_sampler/numpy_batch/satellite.py
+++ b/ocf_data_sampler/numpy_batch/satellite.py
@@ -1,23 +1,30 @@
 """Convert Satellite to NumpyBatch"""
 import xarray as xr
 
-from ocf_datapipes.batch import BatchKey, NumpyBatch
 
+class SatelliteBatchKey:
 
-def convert_satellite_to_numpy_batch(da: xr.DataArray, t0_idx: int | None = None) -> NumpyBatch:
+    satellite_actual = 'satellite_actual'
+    satellite_time_utc = 'satellite_time_utc'
+    satellite_x_geostationary = 'satellite_x_geostationary'
+    satellite_y_geostationary = 'satellite_y_geostationary'
+    satellite_t0_idx = 'satellite_t0_idx'
+
+
+def convert_satellite_to_numpy_batch(da: xr.DataArray, t0_idx: int | None = None) -> dict:
     """Convert from Xarray to NumpyBatch"""
-    example: NumpyBatch = {
-        BatchKey.satellite_actual: da.values,
-        BatchKey.satellite_time_utc: da.time_utc.values.astype(float),
+    example = {
+        SatelliteBatchKey.satellite_actual: da.values,
+        SatelliteBatchKey.satellite_time_utc: da.time_utc.values.astype(float),
     }
 
     for batch_key, dataset_key in (
-         (BatchKey.satellite_x_geostationary, "x_geostationary"),
-        (BatchKey.satellite_y_geostationary, "y_geostationary"),
+         (SatelliteBatchKey.satellite_x_geostationary, "x_geostationary"),
+        (SatelliteBatchKey.satellite_y_geostationary, "y_geostationary"),
     ):
         example[batch_key] = da[dataset_key].values
 
     if t0_idx is not None:
-        example[BatchKey.satellite_t0_idx] = t0_idx
+        example[SatelliteBatchKey.satellite_t0_idx] = t0_idx
 
     return example
\ No newline at end of file
diff --git a/ocf_data_sampler/numpy_batch/sun_position.py b/ocf_data_sampler/numpy_batch/sun_position.py
index 0866801..423222e 100644
--- a/ocf_data_sampler/numpy_batch/sun_position.py
+++ b/ocf_data_sampler/numpy_batch/sun_position.py
@@ -2,7 +2,6 @@
 import pvlib
 import numpy as np
 import pandas as pd
-from ocf_datapipes.batch import BatchKey, NumpyBatch
 
 
 def calculate_azimuth_and_elevation(
@@ -38,7 +37,7 @@ def make_sun_position_numpy_batch(
         lon: float, 
         lat: float, 
         key_preffix: str = "gsp"
-) -> NumpyBatch:
+) -> dict:
     """Creates NumpyBatch with standardized solar coordinates
 
     Args:
@@ -58,9 +57,9 @@ def make_sun_position_numpy_batch(
     elevation = elevation / 180 + 0.5
     
     # Make NumpyBatch
-    sun_numpy_batch: NumpyBatch = {
-        BatchKey[key_preffix + "_solar_azimuth"]: azimuth,
-        BatchKey[key_preffix + "_solar_elevation"]: elevation,
+    sun_numpy_batch = {
+        key_preffix + "_solar_azimuth": azimuth,
+        key_preffix + "_solar_elevation": elevation,
     }
 
     return sun_numpy_batch
\ No newline at end of file