diff --git a/beamtime/electrochemistry/io.py b/beamtime/electrochemistry/io.py
new file mode 100644
index 0000000..f688e90
--- /dev/null
+++ b/beamtime/electrochemistry/io.py
@@ -0,0 +1,34 @@
+import pandas as pd
+
+
+def read_battsmall(path):
+	''' Reads BATTSMALL-data into a DataFrame.
+
+	Input:
+	path (required): string with path to datafile
+
+	Output:
+	df: pandas DataFrame containing the data as-is, but without additional NaN-columns.'''
+
+	df = pd.read_csv(data1, skiprows=2, sep='\t')
+	df = df.loc[:, ~df.columns.str.contains('^Unnamed')]
+
+	return df
+
+
+def clean_battsmall_data(df, t='ms', C='mAh/g', I='mA', U='V'):
+	''' Takes BATTSMALL-data in the form of a DataFrame and cleans the data up and converts units into desired units.
+	Also adds a column indicating whether or not it is charge or discharge.
+
+	Input:
+	df (required): A pandas DataFrame containing BATTSMALL-data, as obtained from read_battsmall().
+	t (optional): Unit for time data. Defaults to ms.
+	C (optional): Unit for specific capacity. Defaults to mAh/g.
+	I (optional): Unit for current. Defaults mA.
+	U (optional): Unit for voltage. Defaults to V.
+
+	Output:
+	df: A cleaned up DataFrame with desired units and additional column about charge/discharge.
+	'''
+
+	
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