User:Joerg rw/jrbme/bme chargefloat log
this is bme charging with screen always on - as an instance of arbitrary consumers increasing system current intake above the charge end detection threshold of bq24150 charger chip. Charging will never stop, keeping cell floating a max voltage, with current oscillating around zero in both directions charging and discharging, depending on minimal charge voltage changes caused by system intake current variations. This, from a cell maintenance POV, is the worst case - see comment in http://wiki.maemo.org/User:Joerg_rw/jrbme/bme_microcycle_log
Nokia-N900-02-8:~# # discharging in preparation for next charge, screen always on
Nokia-N900-02-8:~# bin/bq27200.sh
LOOPMODE=0
Reading values...........................done.
CSOC: 99 % RSOC: 99 %
Average Current: 193 mA
TTF: 65535 minutes TTE: 477 minutes
NAC: 1538 mAh CACD: 1538 mAh CACT: 1538 mAh
SI: 26 mA STTE: 3495 minutes
MLI: 1028 mA MLTTE: 88 minutes
AR: 0 mA ARTTE: 65535 minutes
Last Measured Discharge: 1553 mAh
Cycle Count since Learning: 1 Total Cycle Count since last full reset: 29
Reported Battery Voltage: 4033 mV
Battery Gauge die Temperature: 27 C
Flags: 0x04
Charge:0 NOACT:0 IMIN:0 CI:0 CALIP:0 VDQ:1 EDV1:0 EDVF: 0
eeprom data:
ILMD=2056 EDVF=3000 EDV1=3248 ISLC=20
DMF=14700 nanoVolt SD=201 thousandths of percent per day
AGELMD=1 TAPER=102 mA
IMLC=1028 mA
Nokia-N900-02-8:~# bin/bq27200.sh 30
LOOPMODE=30
mv RSOC CSOC mA NAC CACD CACT TTF TTE TEMP EDV1 LOW
03:45 4036 99 99 -250 1538 1538 1538 65535 369 27 0
03:45 4036 99 99 -187 1536 1536 1536 65535 492 27 0
03:46 4033 99 99 -185 1535 1535 1535 65535 497 27 0
03:46 4036 99 99 -184 1533 1533 1533 65535 498 27 0
03:47 4033 99 99 -185 1532 1532 1532 65535 495 27 0
03:47 4033 98 98 -185 1530 1530 1530 65535 495 27 0
03:48 4031 98 98 -184 1528 1528 1528 65535 498 27 0
03:48 4031 98 98 -184 1527 1527 1527 65535 494 27 0
03:49 4031 98 98 -184 1525 1525 1525 65535 497 27 0
03:49 4028 98 98 -185 1524 1524 1524 65535 494 27 0
03:50 4028 98 98 -185 1522 1522 1522 65535 491 27 0
03:50 4028 98 98 -185 1520 1520 1520 65535 492 27 0
03:51 4025 98 98 -185 1519 1519 1519 65535 491 28 0
03:52 4025 98 98 -184 1517 1517 1517 65535 494 28 0
03:52 4023 98 98 -194 1516 1516 1516 65535 469 28 0
03:53 4023 97 97 -185 1514 1514 1514 65535 490 28 0
03:53 4023 97 97 -184 1512 1512 1512 65535 490 28 0
03:54 4020 97 97 -185 1511 1511 1511 65535 489 28 0
03:54 4020 97 97 -184 1509 1509 1509 65535 491 28 0
03:55 4017 97 97 -185 1508 1508 1508 65535 488 28 0
03:55 4017 97 97 -185 1506 1506 1506 65535 486 28 0
03:56 4017 97 97 -185 1505 1505 1505 65535 487 28 0
03:56 4017 97 97 -185 1503 1503 1503 65535 486 28 0
03:57 4015 97 97 -185 1501 1501 1501 65535 484 28 0
mv RSOC CSOC mA NAC CACD CACT TTF TTE TEMP EDV1 LOW
03:57 4015 96 96 -186 1500 1500 1500 65535 482 29 0
03:58 4012 96 96 -184 1498 1498 1498 65535 486 29 0
03:58 4012 96 96 -194 1497 1497 1497 65535 461 29 0
03:59 4009 96 96 -185 1495 1495 1495 65535 483 29 0
03:59 4009 96 96 -185 1493 1493 1493 65535 483 29 0
04:00 4009 96 96 -187 1492 1492 1492 65535 477 29 0
04:00 4009 96 96 -185 1490 1490 1490 65535 481 29 0
04:01 4004 96 96 -186 1488 1488 1488 65535 478 29 0
04:01 4004 96 96 -186 1486 1486 1486 65535 478 29 0
04:02 4004 96 96 -189 1485 1485 1485 65535 478 29 0
04:02 4004 96 96 -185 1483 1483 1483 65535 479 29 0
04:03 4001 95 95 -188 1482 1482 1482 65535 473 29 0
04:03 4001 95 95 -185 1480 1480 1480 65535 478 29 0
04:04 4001 95 95 -186 1479 1479 1479 65535 475 29 0
04:04 3999 95 95 -185 1477 1477 1477 65535 478 29 0
04:05 3999 95 95 -188 1475 1475 1475 65535 470 29 0
04:05 3999 95 95 -186 1474 1474 1474 65535 475 29 0
04:06 3996 95 95 -187 1472 1472 1472 65535 471 29 0
04:06 3996 95 95 -186 1471 1471 1471 65535 474 29 0
04:07 3996 95 95 -187 1469 1469 1469 65535 470 29 0
04:07 3996 94 94 -186 1467 1467 1467 65535 473 29 0
04:08 3993 94 94 -186 1466 1466 1466 65535 471 29 0
04:08 3993 94 94 -186 1464 1464 1464 65535 472 29 0
04:09 3993 94 94 -188 1463 1463 1463 65535 467 30 0
mv RSOC CSOC mA NAC CACD CACT TTF TTE TEMP EDV1 LOW
04:09 3991 94 94 -185 1461 1461 1461 65535 472 30 0
04:10 3991 94 94 -187 1459 1459 1459 65535 467 30 0
04:10 3988 94 94 -186 1458 1458 1458 65535 471 30 0
04:11 3988 94 94 -187 1456 1456 1456 65535 465 30 0
^CNokia-N900-02-8:~# # now plugging in charger ###################################################################
Nokia-N900-02-8:~# bin/bq27200.sh 5
LOOPMODE=5
mv RSOC CSOC mA NAC CACD CACT TTF TTE TEMP EDV1 LOW
04:12 3983 93 93 -225 1453 1453 1453 65535 386 30 0
04:12 3983 93 93 -223 1452 1452 1452 65535 390 30 0
04:12 3983 93 93 -200 1452 1452 1452 65535 435 30 0
04:12 4087 93 93 -50 1452 1452 1452 65535 1719 30 0
04:12 4105 93 93 331 1453 1453 1453 27 65535 31 0
04:12 4113 94 94 389 1454 1454 1454 22 65535 31 0
04:12 4116 94 94 398 1454 1454 1454 21 65535 31 0
04:12 4118 94 94 405 1455 1455 1455 21 65535 31 0
04:12 4121 94 94 400 1455 1455 1455 21 65535 31 0
04:12 4124 94 94 398 1456 1456 1456 21 65535 31 0
04:12 4126 94 94 405 1457 1457 1457 21 65535 31 0
04:13 4126 94 94 405 1457 1457 1457 21 65535 31 0
04:13 4126 94 94 398 1458 1458 1458 21 65535 31 0
04:13 4126 94 94 394 1458 1458 1458 21 65535 31 0
04:13 4129 94 94 390 1459 1459 1459 21 65535 31 0
04:13 4129 94 94 386 1459 1459 1459 21 65535 31 0
04:13 4129 94 94 385 1460 1460 1460 21 65535 31 0
04:13 4129 94 94 377 1461 1461 1461 21 65535 31 0
04:13 4129 94 94 373 1461 1461 1461 21 65535 31 0
^C
Nokia-N900-02-8:~# #changing sampling rate to 30
Nokia-N900-02-8:~# bin/bq27200.sh 30
LOOPMODE=30
mv RSOC CSOC mA NAC CACD CACT TTF TTE TEMP EDV1 LOW
04:14 4126 94 94 353 1463 1463 1463 22 65535 32 0
04:14 4132 94 94 358 1466 1466 1466 21 65535 31 0
04:15 4132 95 95 350 1469 1469 1469 21 65535 31 0
04:15 4134 95 95 342 1472 1472 1472 21 65535 31 0
04:16 4134 95 95 337 1475 1475 1475 21 65535 32 0
04:16 4134 95 95 329 1478 1478 1478 19 65535 32 0
04:17 4137 95 95 324 1481 1481 1481 19 65535 32 0
04:17 4137 95 95 318 1483 1483 1483 19 65535 32 0
04:18 4137 96 96 312 1486 1486 1486 19 65535 32 0
04:18 4137 96 96 307 1488 1488 1488 18 65535 32 0
04:19 4137 96 96 301 1491 1491 1491 18 65535 32 0
04:19 4140 96 96 297 1493 1493 1493 18 65535 32 0
04:20 4140 96 96 292 1496 1496 1496 16 65535 32 0
04:20 4140 96 96 288 1498 1498 1498 16 65535 32 0
04:21 4140 97 97 284 1501 1501 1501 16 65535 32 0
04:21 4142 97 97 279 1503 1503 1503 15 65535 32 0
04:22 4142 97 97 273 1505 1505 1505 15 65535 32 0
04:22 4142 97 97 270 1507 1507 1507 15 65535 32 0
04:23 4142 97 97 265 1510 1510 1510 13 65535 32 0
04:23 4142 97 97 261 1512 1512 1512 13 65535 32 0
04:24 4145 97 97 257 1514 1514 1514 13 65535 32 0
04:24 4145 98 98 253 1516 1516 1516 12 65535 32 0
04:25 4145 98 98 250 1518 1518 1518 12 65535 32 0
04:25 4145 98 98 245 1520 1520 1520 12 65535 32 0
mv RSOC CSOC mA NAC CACD CACT TTF TTE TEMP EDV1 LOW
04:26 4145 98 98 241 1522 1522 1522 10 65535 32 0
04:26 4145 98 98 238 1524 1524 1524 10 65535 32 0
04:27 4148 98 98 234 1526 1526 1526 9 65535 32 0
04:27 4148 98 98 231 1528 1528 1528 9 65535 32 0
04:28 4148 98 98 227 1530 1530 1530 9 65535 32 0
04:28 4148 99 99 223 1532 1532 1532 7 65535 32 0
04:29 4148 99 99 220 1534 1534 1534 7 65535 32 0
04:29 4148 99 99 216 1536 1536 1536 6 65535 32 0
04:30 4148 99 99 214 1537 1537 1537 6 65535 32 0
04:30 4150 99 99 207 1539 1539 1539 6 65535 33 0
04:31 4150 99 99 207 1541 1541 1541 4 65535 32 0
04:31 4150 99 99 203 1543 1543 1543 4 65535 32 0
04:32 4150 99 99 200 1544 1544 1544 3 65535 32 0
04:32 4150 100 100 197 1546 1546 1546 3 65535 32 0
04:33 4150 100 100 194 1548 1548 1548 1 65535 32 0
04:33 4150 100 100 191 1549 1549 1549 1 65535 32 0
04:34 4153 100 100 188 1551 1551 1551 0 65535 32 0
04:34 4153 100 100 185 1552 1552 1552 0 65535 32 0
04:35 4153 100 100 183 1553 1553 1553 0 65535 32 0
04:35 4153 100 100 179 1553 1553 1553 0 65535 32 0
04:36 4153 100 100 176 1553 1553 1553 0 65535 32 0
04:36 4153 100 100 174 1553 1553 1553 0 65535 32 0
# battery applet still signalling 'charging'
04:37 4153 100 100 171 1553 1553 1553 0 65535 32 0