diff --git a/galvani/BioLogic.py b/galvani/BioLogic.py
index 35eceb8..4eaf057 100644
--- a/galvani/BioLogic.py
+++ b/galvani/BioLogic.py
@@ -33,7 +33,7 @@ def fieldname_to_dtype(fieldname):
         return (fieldname, np.float_)
     elif fieldname in ("Q charge/discharge/mA.h", "step time/s",
                        "Q charge/mA.h", "Q discharge/mA.h",
-                       "Efficiency/%", "Capacity/mA.h")
+                       "Temperature/°C", "Efficiency/%", "Capacity/mA.h")
         return (fieldname, np.float_)
     elif fieldname in ("cycle number", "I Range", "Ns", "half cycle"):
         return (fieldname, np.int_)
@@ -41,8 +41,15 @@ def fieldname_to_dtype(fieldname):
         return ("dQ/mA.h", np.float_)
     elif fieldname in ("I/mA", "<I>/mA"):
         return ("I/mA", np.float_)
-    elif fieldname in ("Ewe/V", "<Ewe>/V"):
+    elif fieldname in ("Ewe/V", "<Ewe>/V", "Ecell/V"):
         return ("Ewe/V", np.float_)
+    elif fieldname.endswith(("/s", "/Hz", "/deg",
+                             "/W", "/mW", "/W.h", "/mW.h",
+                             "/A", "/mA", "/A.h", "/mA.h",
+                             "/V", "/mV",
+                             "/F", "/mF", "/uF",
+                             "/C", "/Ohm",)):
+        return (fieldname, np.float_)
     else:
         raise ValueError("Invalid column header: %s" % fieldname)
 
@@ -66,7 +73,7 @@ def MPTfile(file_or_path, encoding='ascii'):
         mpt_file = file_or_path
 
     magic = next(mpt_file)
-    if magic != b'EC-Lab ASCII FILE\r\n':
+    if magic not in (b'EC-Lab ASCII FILE\r\n', b'BT-Lab ASCII FILE\r\n'):
         raise ValueError("Bad first line for EC-Lab file: '%s'" % magic)
 
     nb_headers_match = re.match(rb'Nb header lines : (\d+)\s*$',
@@ -213,6 +220,7 @@ VMPdata_colID_dtype_map = {
     433: ('-Im(Zwe-ce)/Ohm', '<f4'),
     434: ('(Q-Qo)/C', '<f4'),
     435: ('dQ/C', '<f4'),
+    438: ('step time/s', '<f8'),
     441: ('<Ecv>/V', '<f4'),
     462: ('Temperature/°C', '<f4'),
     467: ('Q charge/discharge/mA.h', '<f8'),
diff --git a/tests/test_BioLogic.py b/tests/test_BioLogic.py
index a739f5f..ad7be6f 100644
--- a/tests/test_BioLogic.py
+++ b/tests/test_BioLogic.py
@@ -165,7 +165,7 @@ def assert_MPR_matches_MPT(mpr, mpt, comments):
                               mpt["Ewe/V"],
                               decimal=6)  # 32 bit float precision
 
-    assert_field_matches("dQ/mA.h", decimal=17)  # 64 bit float precision
+    assert_field_matches("dQ/mA.h", decimal=16)  # 64 bit float precision
     assert_field_matches("P/W", decimal=10)  # 32 bit float precision for 1.xxE-5
     assert_field_matches("I/mA", decimal=6)  # 32 bit float precision
 
@@ -173,7 +173,7 @@ def assert_MPR_matches_MPT(mpr, mpt, comments):
     assert_field_matches("(Q-Qo)/C", decimal=6)  # 32 bit float precision
 
     try:
-        assert timestamp_from_comments(comments) == mpr.timestamp
+        assert timestamp_from_comments(comments) == mpr.timestamp.replace(microsecond=0)
     except AttributeError:
         pass
 
@@ -186,6 +186,7 @@ def assert_MPR_matches_MPT(mpr, mpt, comments):
     # bio_logic5 and bio_logic6 are special cases
     'CV_C01',
     '121_CA_455nm_6V_30min_C01',
+    '020-formation_CB5',
 ])
 def test_MPR_matches_MPT(testdata_dir, basename):
     """Check the MPR parser against the MPT parser.
@@ -196,7 +197,7 @@ def test_MPR_matches_MPT(testdata_dir, basename):
     binpath = os.path.join(testdata_dir, basename + '.mpr')
     txtpath = os.path.join(testdata_dir, basename + '.mpt')
     mpr = MPRfile(binpath)
-    mpt, comments = MPTfile(txtpath)
+    mpt, comments = MPTfile(txtpath, encoding='latin1')
     assert_MPR_matches_MPT(mpr, mpt, comments)
 
 
diff --git a/tests/testdata/020-formation_CB5.mpr b/tests/testdata/020-formation_CB5.mpr
new file mode 100644
index 0000000..84528ea
--- /dev/null
+++ b/tests/testdata/020-formation_CB5.mpr
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:586836288e1144454c277ecd6adfc384bfe1614ed141900c5f004b26a8b54d64
+size 157216
diff --git a/tests/testdata/020-formation_CB5.mpr.license b/tests/testdata/020-formation_CB5.mpr.license
new file mode 100644
index 0000000..148639d
--- /dev/null
+++ b/tests/testdata/020-formation_CB5.mpr.license
@@ -0,0 +1,2 @@
+SPDX-FileCopyrightText Chihyu Chen <chihyu.chen@molicel.com>
+SPDX-License-Identifier CC-BY-4.0
diff --git a/tests/testdata/020-formation_CB5.mpt b/tests/testdata/020-formation_CB5.mpt
new file mode 100644
index 0000000..88bfdaf
--- /dev/null
+++ b/tests/testdata/020-formation_CB5.mpt
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c323f95a3f5f1465d07ef8654a86df1de65e3a5dc3af11e7fb27d187f2ffe43e
+size 681331
diff --git a/tests/testdata/020-formation_CB5.mpt.license b/tests/testdata/020-formation_CB5.mpt.license
new file mode 100644
index 0000000..148639d
--- /dev/null
+++ b/tests/testdata/020-formation_CB5.mpt.license
@@ -0,0 +1,2 @@
+SPDX-FileCopyrightText Chihyu Chen <chihyu.chen@molicel.com>
+SPDX-License-Identifier CC-BY-4.0