Other Parts Discussed in Thread: BQSTUDIO, BQ28Z610
I have a basic set up right now, with a 2S battery connected to 2P, 1P and 1N of the gauge. I also have a power supply connected to Pack+ and Pack- on the gauge.
I want to do a basic charge test, where I am charging to the float voltage 8.9V, at a current limit of 1A.
However, during the charge, it may be working for a few minutes, but then charging current will be 0. Pack+ and Pack- (Power supply connected) will show 8.9V, but 2P, 1P and 1N will show a much lower voltage, like 7.4V. The battery won't be charging at this point, and when I refresh the BQ Studios page, the chg fet is now disabled. Toggling the fet doesn't fix the charging. Here is a basic log of voltage and current to show this:
Data Log TimeStamp,Voltage,Current,Temperature,Relative State of Charge 2024-04-10 13:25:21.526,6238,0,20.9,1 2024-04-10 13:25:26.554,6238,0,20.9,1 2024-04-10 13:25:31.543,6637,969,20.9,1 2024-04-10 13:25:36.550,6714,968,20.9,1 2024-04-10 13:25:41.550,6769,970,20.9,1 2024-04-10 13:25:46.595,6822,970,20.9,1 2024-04-10 13:25:51.566,6864,970,20.9,1 2024-04-10 13:25:56.578,6904,969,20.9,1 2024-04-10 13:26:01.585,6939,996,20.9,1 2024-04-10 13:26:06.660,6969,997,20.9,1 2024-04-10 13:26:11.593,6995,996,20.9,1 2024-04-10 13:26:16.597,7118,997,20.9,1 2024-04-10 13:26:21.602,7019,996,20.9,1 2024-04-10 13:26:26.710,7080,995,20.9,1 2024-04-10 13:26:31.604,7067,998,20.9,1 2024-04-10 13:26:36.613,7109,996,20.9,1 2024-04-10 13:26:41.628,7129,997,20.9,1 2024-04-10 13:26:46.740,7148,996,20.8,1 2024-04-10 13:26:51.644,7165,996,20.8,1 2024-04-10 13:26:56.652,7182,997,20.8,1 2024-04-10 13:27:01.653,7199,997,20.9,1 2024-04-10 13:27:06.771,7216,997,20.9,1 2024-04-10 13:27:11.670,7229,997,21.1,1 2024-04-10 13:27:16.681,7219,996,21.0,1 2024-04-10 13:27:21.689,7233,997,21.0,1 2024-04-10 13:27:26.833,7247,996,21.0,1 2024-04-10 13:27:31.705,7256,997,21.0,2 2024-04-10 13:27:36.714,7274,997,21.0,2 2024-04-10 13:27:41.728,7287,996,21.0,2 2024-04-10 13:27:46.863,7300,997,21.0,2 2024-04-10 13:27:51.743,7304,996,21.0,2 2024-04-10 13:27:56.752,7323,996,21.0,2 2024-04-10 13:28:01.766,7335,996,21.0,2 2024-04-10 13:28:06.941,7343,996,21.0,2 2024-04-10 13:28:11.780,7358,997,21.0,2 2024-04-10 13:28:16.787,7369,996,21.0,2 2024-04-10 13:28:21.788,7379,996,20.9,2 2024-04-10 13:28:26.988,7388,995,20.9,2 2024-04-10 13:28:31.818,7403,996,20.9,2 2024-04-10 13:28:36.831,7410,997,20.9,2 2024-04-10 13:28:41.833,7419,997,20.9,2 2024-04-10 13:28:47.006,7419,996,20.9,2 2024-04-10 13:28:51.849,7441,996,20.9,2 2024-04-10 13:28:56.850,7447,997,20.9,2 2024-04-10 13:29:01.850,7457,996,20.9,2 2024-04-10 13:29:07.067,7410,996,20.9,2 2024-04-10 13:29:11.867,7470,996,20.9,2 2024-04-10 13:29:16.874,7483,996,20.9,2 2024-04-10 13:29:21.887,7491,996,20.8,2 2024-04-10 13:29:27.089,7314,996,20.9,2 2024-04-10 13:29:31.892,7219,0,20.8,2 2024-04-10 13:29:36.893,7207,0,20.8,2 2024-04-10 13:29:41.896,7197,0,20.8,2 2024-04-10 13:29:47.122,7034,0,20.8,2 2024-04-10 13:29:51.914,7180,0,20.8,2 2024-04-10 13:29:56.924,7179,0,20.8,2 2024-04-10 13:30:01.925,7176,0,20.8,2 2024-04-10 13:30:07.161,7087,0,20.8,2 2024-04-10 13:30:11.932,7168,0,20.8,2 2024-04-10 13:30:16.934,7169,0,20.8,2 2024-04-10 13:30:21.943,7167,0,20.8,2 2024-04-10 13:30:27.190,7093,0,20.8,2 2024-04-10 13:30:31.966,7163,0,20.8,2 2024-04-10 13:30:36.968,7163,0,20.7,2 2024-04-10 13:30:41.973,7162,0,20.7,2 2024-04-10 13:30:47.223,7118,0,20.7,2 2024-04-10 13:30:51.985,7156,0,20.7,2 2024-04-10 13:30:56.989,7159,0,20.7,2 2024-04-10 13:31:01.995,7159,0,20.7,2 2024-04-10 13:31:07.271,7001,0,20.7,2 2024-04-10 13:31:12.003,7155,0,20.7,2 2024-04-10 13:31:17.017,7157,0,20.7,2 2024-04-10 13:31:22.017,7157,0,20.7,2 2024-04-10 13:31:27.316,7011,0,20.7,2 2024-04-10 13:31:32.024,7153,0,20.7,2 2024-04-10 13:31:37.034,7155,0,20.7,2 2024-04-10 13:31:42.049,7155,0,20.6,2 2024-04-10 13:31:47.345,6966,0,20.6,2 2024-04-10 13:31:52.064,7152,0,20.6,2 2024-04-10 13:31:57.068,7153,0,20.6,2 2024-04-10 13:32:02.080,7153,0,20.6,2 2024-04-10 13:32:07.394,7163,0,20.6,2 2024-04-10 13:32:12.097,7152,0,20.6,2 2024-04-10 13:32:17.107,7152,0,20.6,2 2024-04-10 13:32:22.107,7152,0,20.6,2 2024-04-10 13:32:27.441,7136,0,20.6,2 2024-04-10 13:32:32.136,7154,0,20.6,2 2024-04-10 13:32:37.150,7151,0,20.6,2 2024-04-10 13:32:42.163,7150,0,20.5,2 2024-04-10 13:32:47.455,7056,0,20.5,2 2024-04-10 13:32:52.183,7156,0,20.6,2 2024-04-10 13:32:57.192,7150,0,20.5,2 2024-04-10 13:33:02.204,7149,0,20.5,2 2024-04-10 13:33:07.500,7248,0,20.5,2 2024-04-10 13:33:12.229,7149,0,20.5,2 2024-04-10 13:33:17.239,7148,0,20.5,2 2024-04-10 13:33:22.248,7148,0,20.5,2 2024-04-10 13:33:27.549,7349,0,20.5,2 2024-04-10 13:33:32.271,7153,0,20.5,2 2024-04-10 13:33:37.276,7147,0,20.5,2 2024-04-10 13:33:42.277,7147,0,20.5,2 2024-04-10 13:33:47.595,7350,0,20.5,2 2024-04-10 13:33:52.292,7152,0,20.5,2 2024-04-10 13:33:57.305,7146,0,20.5,2 2024-04-10 13:34:02.308,7146,0,20.5,2 2024-04-10 13:34:07.628,7210,0,20.5,2 2024-04-10 13:34:12.323,7156,0,20.4,2 2024-04-10 13:34:17.325,7146,0,20.5,2 2024-04-10 13:34:22.339,7146,0,20.5,2 2024-04-10 13:34:27.659,7247,0,20.5,2 2024-04-10 13:34:32.353,7157,0,20.4,2 2024-04-10 13:34:37.365,7145,0,20.4,2 2024-04-10 13:34:42.367,7145,0,20.4,2 2024-04-10 13:34:47.713,7145,0,20.4,2 2024-04-10 13:34:52.386,7162,0,20.4,2 2024-04-10 13:34:57.390,7145,0,20.4,2 2024-04-10 13:35:02.401,7145,0,20.4,2 2024-04-10 13:35:07.751,7144,0,20.4,2 2024-04-10 13:35:12.418,7144,0,20.4,2 2024-04-10 13:35:17.428,7144,0,20.4,2 2024-04-10 13:35:22.429,7144,0,20.4,2 2024-04-10 13:35:27.812,7144,0,20.4,2 2024-04-10 13:35:32.441,7143,0,20.4,2 2024-04-10 13:35:37.454,7143,0,20.4,2 2024-04-10 13:35:42.460,7143,0,20.4,2 2024-04-10 13:35:47.837,7143,0,20.4,2 2024-04-10 13:35:52.476,7143,0,20.4,2 2024-04-10 13:35:57.489,7143,0,20.4,2 2024-04-10 13:36:02.499,7143,0,20.4,2 2024-04-10 13:36:07.868,7143,0,20.4,2 2024-04-10 13:36:12.520,7143,0,20.4,2 2024-04-10 13:36:17.526,7142,0,20.4,2 2024-04-10 13:36:22.529,7142,0,20.4,2 2024-04-10 13:36:27.890,7142,0,20.4,2 2024-04-10 13:36:32.542,7142,0,20.4,2 2024-04-10 13:36:37.556,7142,0,20.4,2 2024-04-10 13:36:42.570,7142,0,20.4,2 2024-04-10 13:36:47.939,7142,0,20.4,2 2024-04-10 13:36:52.582,7142,0,20.4,2 2024-04-10 13:36:57.597,7142,0,20.4,2 2024-04-10 13:37:02.602,7142,0,20.3,2 2024-04-10 13:37:07.983,7141,0,20.4,2 2024-04-10 13:37:12.616,7141,0,20.3,2 2024-04-10 13:37:17.618,7141,0,20.3,2 2024-04-10 13:37:22.623,7141,0,20.3,2 2024-04-10 13:37:28.016,7141,0,20.3,2 2024-04-10 13:37:32.647,7141,0,20.3,2 2024-04-10 13:37:37.656,7141,0,20.3,2 2024-04-10 13:37:42.669,7141,0,20.3,2 2024-04-10 13:37:48.046,7140,0,20.3,2 2024-04-10 13:37:52.691,7141,0,20.3,2 2024-04-10 13:37:57.700,7140,0,20.3,2 2024-04-10 13:38:02.715,7140,0,20.3,2 2024-04-10 13:38:08.077,7140,0,20.3,2 2024-04-10 13:38:12.726,7140,0,20.3,2 2024-04-10 13:38:17.735,7140,0,20.3,2 2024-04-10 13:38:22.740,7140,0,20.3,2 2024-04-10 13:38:28.108,7140,0,20.3,2 2024-04-10 13:38:32.751,7140,0,20.3,2 2024-04-10 13:38:37.762,7140,0,20.3,2 2024-04-10 13:38:42.766,7140,0,20.3,2 2024-04-10 13:38:48.174,7139,0,20.3,2 2024-04-10 13:38:52.782,7127,0,20.3,2 2024-04-10 13:38:57.787,7139,0,20.3,2 2024-04-10 13:39:02.793,7139,0,20.3,2 2024-04-10 13:39:08.194,7139,0,20.2,2 2024-04-10 13:39:12.808,7138,0,20.3,2 2024-04-10 13:39:17.814,7139,0,20.3,2 2024-04-10 13:39:22.821,7139,0,20.3,2 2024-04-10 13:39:27.822,7139,0,20.3,2 2024-04-10 13:39:32.825,7131,0,20.3,2 2024-04-10 13:39:37.840,7139,0,20.3,2 2024-04-10 13:39:42.851,7139,0,20.3,2 2024-04-10 13:39:47.851,7139,0,20.3,2 2024-04-10 13:39:52.862,7090,0,20.2,2 2024-04-10 13:39:57.863,7139,0,20.2,2 2024-04-10 13:40:02.875,7138,0,20.2,2 2024-04-10 13:40:07.884,7138,0,20.2,2 2024-04-10 13:40:12.898,7090,0,20.2,2 2024-04-10 13:40:17.900,7138,0,20.2,2 2024-04-10 13:40:22.905,7138,0,20.2,2 2024-04-10 13:40:27.915,7138,0,20.2,2 2024-04-10 13:40:32.928,7067,0,20.2,2 2024-04-10 13:40:37.941,7138,0,20.2,2 2024-04-10 13:40:42.947,7138,0,20.2,2 2024-04-10 13:40:47.959,7138,0,20.2,2 2024-04-10 13:40:52.972,7065,0,20.3,2 2024-04-10 13:40:57.977,7138,0,20.3,2 2024-04-10 13:41:02.983,7138,0,20.3,2 2024-04-10 13:41:07.991,7138,0,20.3,2 2024-04-10 13:41:13.004,7095,0,20.3,2 2024-04-10 13:41:18.014,7137,0,20.3,2 2024-04-10 13:41:23.024,7138,0,20.3,2 2024-04-10 13:41:28.027,7137,0,20.2,2 2024-04-10 13:41:33.033,7058,0,20.2,2 2024-04-10 13:41:38.041,7137,0,20.2,2 2024-04-10 13:41:43.056,7137,0,20.2,2 2024-04-10 13:41:48.066,7137,0,20.2,2 2024-04-10 13:41:53.067,7063,0,20.2,2 2024-04-10 13:41:58.080,7137,0,20.2,2 2024-04-10 13:42:03.088,7137,0,20.2,2 2024-04-10 13:42:08.101,7137,0,20.2,2 2024-04-10 13:42:13.111,7061,0,20.2,2 2024-04-10 13:42:18.125,7136,0,20.2,2 2024-04-10 13:42:23.135,7137,0,20.2,2 2024-04-10 13:42:28.139,7137,0,20.2,2 2024-04-10 13:42:33.147,7133,0,20.2,2 2024-04-10 13:42:38.150,7136,0,20.2,2 2024-04-10 13:42:43.154,7136,0,20.2,2 2024-04-10 13:42:48.161,7136,0,20.2,2 2024-04-10 13:42:53.175,7061,0,20.2,2 2024-04-10 13:42:58.176,7136,0,20.2,2 2024-04-10 13:43:03.185,7136,0,20.2,2 2024-04-10 13:43:08.188,7136,0,20.2,2 2024-04-10 13:43:13.191,7091,0,20.2,2 2024-04-10 13:43:18.201,7136,0,20.2,2 2024-04-10 13:43:23.211,7136,0,20.2,2 2024-04-10 13:43:28.221,7136,0,20.2,2 2024-04-10 13:43:33.231,7087,0,20.2,2 2024-04-10 13:43:38.241,7136,0,20.2,2 2024-04-10 13:43:43.246,7136,0,20.2,2 2024-04-10 13:43:48.252,7136,0,20.2,2 2024-04-10 13:43:53.262,7151,0,20.2,2 2024-04-10 13:43:58.263,7136,0,20.2,2 2024-04-10 13:44:03.266,7136,0,20.2,2 2024-04-10 13:44:08.270,7136,0,20.2,2 2024-04-10 13:44:13.273,7140,0,20.2,2 2024-04-10 13:44:18.287,7135,0,20.2,2 2024-04-10 13:44:23.297,7135,0,20.2,2 2024-04-10 13:44:28.312,7135,0,20.2,2 2024-04-10 13:44:33.325,7149,0,20.2,2 2024-04-10 13:44:38.329,7135,0,20.2,2 2024-04-10 13:44:43.344,7135,0,20.2,2 2024-04-10 13:44:48.352,7135,0,20.2,2 2024-04-10 13:44:53.363,7152,0,20.2,2 2024-04-10 13:44:58.367,7135,0,20.1,2 2024-04-10 13:45:03.369,7135,0,20.1,2 2024-04-10 13:45:08.376,7135,0,20.1,2 2024-04-10 13:45:13.379,7130,0,20.1,2 2024-04-10 13:45:18.386,7135,0,20.1,2 2024-04-10 13:45:23.392,7135,0,20.1,2 2024-04-10 13:45:28.395,7135,0,20.1,2 2024-04-10 13:45:33.406,7142,0,20.1,2 2024-04-10 13:45:38.420,7135,0,20.2,2 2024-04-10 13:45:43.430,7135,0,20.2,2 2024-04-10 13:45:48.441,7135,0,20.2,2 2024-04-10 13:45:53.456,7138,0,20.2,2 2024-04-10 13:45:58.457,7135,0,20.2,2 2024-04-10 13:46:03.466,7135,0,20.2,2 2024-04-10 13:46:08.471,7135,0,20.2,2 2024-04-10 13:46:13.482,7118,0,20.2,2 2024-04-10 13:46:18.497,7135,0,20.2,2 2024-04-10 13:46:23.499,7135,0,20.2,2 2024-04-10 13:46:28.504,7134,0,20.2,2 2024-04-10 13:46:33.515,7148,0,20.2,2 2024-04-10 13:46:38.529,7135,0,20.2,2 2024-04-10 13:46:43.532,7135,0,20.2,2 2024-04-10 13:46:48.543,7135,0,20.2,2 2024-04-10 13:46:53.545,7181,0,20.2,2 2024-04-10 13:46:58.548,7134,0,20.2,2 2024-04-10 13:47:03.557,7134,0,20.2,2 2024-04-10 13:47:08.568,7134,0,20.2,2 2024-04-10 13:47:13.576,7178,0,20.2,2 2024-04-10 13:47:18.590,7134,0,20.2,2 2024-04-10 13:47:23.599,7134,0,20.2,2 2024-04-10 13:47:28.609,7134,0,20.2,2 2024-04-10 13:47:33.623,7178,0,20.2,2 2024-04-10 13:47:38.623,7134,0,20.2,2 2024-04-10 13:47:43.632,7133,0,20.2,2 2024-04-10 13:47:48.635,7134,0,20.2,2 2024-04-10 13:47:53.645,7185,0,20.2,2 2024-04-10 13:47:58.647,7134,0,20.2,2 2024-04-10 13:48:03.660,7134,0,20.2,2 2024-04-10 13:48:08.670,7134,0,20.2,2 2024-04-10 13:48:13.673,7181,0,20.2,2 2024-04-10 13:48:18.681,7134,0,20.2,2 2024-04-10 13:48:23.693,7134,0,20.2,2 2024-04-10 13:48:28.704,7134,0,20.2,2 2024-04-10 13:48:33.714,7197,0,20.2,2 2024-04-10 13:48:38.720,7134,0,20.2,2 2024-04-10 13:48:43.734,7133,0,20.2,2 2024-04-10 13:48:48.735,7133,0,20.2,2 2024-04-10 13:48:53.742,7196,0,20.2,2 2024-04-10 13:48:58.745,7134,0,20.3,2 2024-04-10 13:49:03.749,7133,0,20.3,2 2024-04-10 13:49:08.753,7134,0,20.2,2 2024-04-10 13:49:13.758,7194,0,20.2,2 2024-04-10 13:49:18.760,7133,0,20.2,2 2024-04-10 13:49:23.767,7133,0,20.2,2 2024-04-10 13:49:28.768,7133,0,20.3,2 2024-04-10 13:49:33.776,7198,0,20.3,2 2024-04-10 13:49:38.788,7133,0,20.3,2 2024-04-10 13:49:43.788,7133,0,20.3,2 2024-04-10 13:49:48.793,7133,0,20.3,2 2024-04-10 13:49:53.808,7193,0,20.3,2 2024-04-10 13:49:58.810,7133,0,20.3,2 2024-04-10 13:50:03.820,7133,0,20.3,2 2024-04-10 13:50:08.828,7133,0,20.3,2 2024-04-10 13:50:13.839,7161,0,20.3,2 2024-04-10 13:50:18.850,7133,0,20.3,2 2024-04-10 13:50:23.860,7133,0,20.3,2 2024-04-10 13:50:28.863,7133,0,20.3,2 2024-04-10 13:50:33.872,7195,0,20.3,2 2024-04-10 13:50:38.876,7133,0,20.3,2 2024-04-10 13:50:43.877,7132,0,20.3,2 2024-04-10 13:50:48.888,7132,0,20.3,2 2024-04-10 13:50:53.900,7151,0,20.3,2 2024-04-10 13:50:58.910,7133,0,20.3,2 2024-04-10 13:51:03.913,7132,0,20.3,2 2024-04-10 13:51:08.913,7132,0,20.3,2 2024-04-10 13:51:13.918,7198,0,20.3,2 2024-04-10 13:51:18.928,7132,0,20.4,2 2024-04-10 13:51:23.941,7132,0,20.3,2 2024-04-10 13:51:28.950,7132,0,20.3,2 2024-04-10 13:51:33.960,7200,0,20.4,2 2024-04-10 13:51:38.966,7132,0,20.4,2 2024-04-10 13:51:43.970,7132,0,20.4,2 2024-04-10 13:51:48.971,7132,0,20.4,2 2024-04-10 13:51:53.974,7118,0,20.4,2 2024-04-10 13:51:59.245,7266,0,20.4,2 2024-04-10 13:52:04.181,6914,0,20.4,2 2024-04-10 13:52:09.043,7341,0,20.4,2 2024-04-10 13:52:14.016,7173,0,20.5,2 2024-04-10 13:52:19.020,7132,0,20.5,2 2024-04-10 13:52:24.030,7132,0,20.5,2 2024-04-10 13:52:29.043,7132,0,20.5,2
I tried again with a fresh gauge EVK and a different battery and a different PC, but I still see the same result.
Here are the gas gauging files for both batteries I tried this on. Standalone2.gg.csvStandalone.gg.csv
Is there a setting that is preventing it from charging properly? What is causing the chg fet to become disabled?
Thanks,
Kelvin