Mauritius B

Really sad news. Wishing him speedy recovery. I will keep him in my thoughts.

Are there any light spots on your basement? Windows? The darker the place the better for water. Light will create more trouble than temperature regarding microorganisms growth.

I have a similar setup too. Solar geyser with flat panel and 200l tank that can reach 65 degrees easily. The output from the tank is connected to the gas boiler inlet through a thermostatic valve. Boiler temperature is set to 50 so, it only burns gas when inlet water temperature is lower than 50 degrees or to heat up the house in winter. In addition, I have added a 1kw heater cartridge inside the 200l tank, so I can also dump excess electrical power from PV into solar tank too. From May till October, the boiler remains switched off (northern hemisphere).

Device id 10013217ec FW: PSF-B67-GL Updated from 3.6.1 to 3.6.3 successfully and back to normal operation.

One more faulty unit after update here...

There you go. Same period as shown on the picture. 1min scan intervals. 53v only hit during battery discharge and not during charge. That's curious. I am curious about how the battery can raise voltage if nothing is charging it. Grid is disconnected and PV is just barely unable to supply the loads so, some energy is taken from the battery and blended. Device mode Time AC voltage AC frequency PV input voltage PV input power Output apparent power Output active power Battery voltage Battery capacity Charging current Battery discharge current Output voltage Output frequency Battery Mode 2025-01-14 13:00:44 0.0 0.0 79.1 1517 574.0 330.0 50.8 89 23.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:01:45 0.0 0.0 74.9 1517 575.0 326.0 50.8 89 22.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:02:45 0.0 0.0 78.9 1537 575.0 333.0 50.8 89 23.0 0.0 230.1 49.9 Battery Mode 2025-01-14 13:03:44 0.0 0.0 74.7 1544 575.0 326.0 50.8 89 23.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:04:44 0.0 0.0 78.1 1575 575.0 320.0 50.9 89 24.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:05:44 0.0 0.0 77.1 1595 574.0 325.0 50.9 89 25.0 0.0 229.9 49.9 Battery Mode 2025-01-14 13:06:43 0.0 0.0 75.1 1565 575.0 324.0 50.9 89 24.0 0.0 230.1 49.9 Battery Mode 2025-01-14 13:07:45 0.0 0.0 77.2 1566 575.0 323.0 50.9 89 24.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:08:44 0.0 0.0 76.1 1551 552.0 310.0 50.9 89 24.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:09:44 0.0 0.0 79.2 1546 575.0 319.0 50.9 89 24.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:10:44 0.0 0.0 74.9 1520 575.0 319.0 50.9 89 23.0 0.0 230.2 50.0 Battery Mode 2025-01-14 13:11:44 0.0 0.0 81.2 1520 575.0 322.0 51.0 89 23.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:12:44 0.0 0.0 79.1 1523 575.0 316.0 51.0 89 23.0 0.0 230.0 49.9 Battery Mode 2025-01-14 13:13:44 0.0 0.0 77.1 1517 575.0 315.0 51.0 89 22.0 0.0 230.0 49.9 Battery Mode 2025-01-14 13:14:45 0.0 0.0 77.9 1512 575.0 324.0 51.0 89 23.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:15:44 0.0 0.0 76.6 1512 575.0 323.0 51.1 89 23.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:16:44 0.0 0.0 78.7 1514 574.0 328.0 51.1 89 22.0 0.0 229.8 50.0 Battery Mode 2025-01-14 13:17:43 0.0 0.0 75.4 1514 644.0 378.0 51.1 89 22.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:18:45 0.0 0.0 79.4 1524 621.0 364.0 51.1 89 22.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:19:44 0.0 0.0 78.7 1536 620.0 368.0 51.2 89 23.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:20:44 0.0 0.0 77.7 1544 620.0 362.0 51.2 89 23.0 0.0 229.8 50.0 Battery Mode 2025-01-14 13:21:45 0.0 0.0 77.6 1561 620.0 372.0 51.2 90 23.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:22:45 0.0 0.0 74.2 1553 575.0 314.0 51.4 92 24.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:23:45 0.0 0.0 76.2 1585 620.0 372.0 51.4 93 23.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:24:45 0.0 0.0 76.6 1598 598.0 354.0 51.5 94 24.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:25:44 0.0 0.0 74.7 1581 597.0 344.0 51.5 94 23.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:26:46 0.0 0.0 76.9 1578 621.0 369.0 51.7 95 23.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:27:46 0.0 0.0 74.9 1545 598.0 358.0 51.8 95 22.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:28:46 0.0 0.0 79.2 1551 597.0 350.0 51.9 96 22.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:29:46 0.0 0.0 78.1 1546 598.0 347.0 52.2 97 22.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:30:47 0.0 0.0 77.9 1542 575.0 360.0 52.5 97 22.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:31:47 0.0 0.0 91.7 625 598.0 345.0 52.5 99 4.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:32:46 0.0 0.0 91.4 622 598.0 355.0 52.3 100 4.0 0.0 230.0 49.9 Battery Mode 2025-01-14 13:33:47 0.0 0.0 91.4 600 598.0 351.0 52.3 100 4.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:34:48 0.0 0.0 91.2 579 598.0 352.0 52.3 100 4.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:35:47 0.0 0.0 91.1 591 598.0 350.0 52.3 100 4.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:36:48 0.0 0.0 91.1 582 598.0 360.0 52.4 100 4.0 0.0 229.8 50.0 Battery Mode 2025-01-14 13:37:49 0.0 0.0 90.9 582 597.0 354.0 52.5 100 4.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:38:48 0.0 0.0 91.9 425 574.0 344.0 52.6 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:39:48 0.0 0.0 92.1 414 598.0 346.0 52.5 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:40:49 0.0 0.0 92.1 424 575.0 346.0 52.5 100 1.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:41:49 0.0 0.0 92.2 413 574.0 343.0 52.4 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:42:48 0.0 0.0 92.2 418 597.0 358.0 52.4 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:43:48 0.0 0.0 91.7 476 667.0 415.0 52.3 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:44:49 0.0 0.0 91.7 486 666.0 404.0 52.4 100 1.0 0.0 229.9 49.9 Battery Mode 2025-01-14 13:45:49 0.0 0.0 91.7 486 667.0 418.0 52.4 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:46:48 0.0 0.0 91.7 496 667.0 422.0 52.4 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:47:47 0.0 0.0 92.4 413 621.0 359.0 52.3 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:48:48 0.0 0.0 92.2 418 598.0 353.0 52.3 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:49:47 0.0 0.0 92.2 418 621.0 369.0 52.3 100 1.0 0.0 229.8 50.0 Battery Mode 2025-01-14 13:50:49 0.0 0.0 92.2 412 621.0 359.0 52.3 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 13:51:47 0.0 0.0 79.1 1522 1564.0 1470.0 52.3 100 0.0 1.0 230.0 50.0 Battery Mode 2025-01-14 13:52:49 0.0 0.0 74.5 1508 1563.0 1472.0 52.3 100 0.0 2.0 230.0 50.0 Battery Mode 2025-01-14 13:53:48 0.0 0.0 78.7 1517 1561.0 1467.0 52.4 100 0.0 2.0 229.9 50.0 Battery Mode 2025-01-14 13:54:48 0.0 0.0 77.6 1524 1563.0 1460.0 52.5 100 0.0 1.0 229.9 50.0 Battery Mode 2025-01-14 13:55:49 0.0 0.0 72.9 1499 1517.0 1421.0 52.6 100 0.0 1.0 229.9 50.0 Battery Mode 2025-01-14 13:56:48 0.0 0.0 78.9 1519 1519.0 1433.0 52.7 100 0.0 1.0 230.1 50.0 Battery Mode 2025-01-14 13:57:48 0.0 0.0 76.7 1535 1518.0 1435.0 52.9 100 0.0 0.0 230.1 50.0 Battery Mode 2025-01-14 13:58:50 0.0 0.0 78.4 1544 1518.0 1425.0 53.1 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 13:59:49 0.0 0.0 82.4 1466 1541.0 1441.0 53.1 100 0.0 2.0 230.1 50.0 Battery Mode 2025-01-14 14:00:48 0.0 0.0 82.7 1456 1518.0 1442.0 53.1 100 0.0 2.0 229.8 50.0 Battery Mode 2025-01-14 14:01:49 0.0 0.0 82.9 1456 1518.0 1428.0 53.1 100 0.0 2.0 230.0 50.0 Battery Mode 2025-01-14 14:02:49 0.0 0.0 83.1 1445 1517.0 1425.0 53.1 100 0.0 2.0 229.9 50.0 Battery Mode 2025-01-14 14:03:49 0.0 0.0 83.4 1429 1516.0 1422.0 53.1 100 0.0 3.0 229.8 50.0 Battery Mode 2025-01-14 14:04:48 0.0 0.0 83.6 1429 1517.0 1435.0 53.1 100 0.0 3.0 229.9 50.0 Battery Mode 2025-01-14 14:05:48 0.0 0.0 83.6 1418 1518.0 1436.0 53.1 100 0.0 3.0 230.0 50.0 Battery Mode 2025-01-14 14:06:49 0.0 0.0 83.6 1413 1516.0 1434.0 53.1 100 0.0 3.0 229.9 50.0 Battery Mode 2025-01-14 14:07:49 0.0 0.0 83.6 1413 1518.0 1428.0 53.1 100 0.0 3.0 230.0 50.0 Battery Mode 2025-01-14 14:08:50 0.0 0.0 82.1 1482 1587.0 1479.0 53.1 100 0.0 3.0 230.0 50.0 Battery Mode 2025-01-14 14:09:50 0.0 0.0 81.9 1471 1587.0 1481.0 53.1 100 0.0 3.0 230.0 49.9 Battery Mode 2025-01-14 14:10:49 0.0 0.0 81.6 1466 1587.0 1493.0 53.0 100 0.0 3.0 230.0 50.0 Battery Mode 2025-01-14 14:11:49 0.0 0.0 81.1 1466 1586.0 1494.0 53.1 100 0.0 3.0 230.1 50.0 Battery Mode 2025-01-14 14:12:49 0.0 0.0 81.9 1413 1519.0 1440.0 53.1 100 0.0 3.0 230.0 50.0 Battery Mode 2025-01-14 14:13:49 0.0 0.0 82.1 1413 1518.0 1444.0 53.1 100 0.0 3.0 230.0 50.0 Battery Mode 2025-01-14 14:14:50 0.0 0.0 82.1 1402 1542.0 1444.0 53.1 100 0.0 3.0 230.0 50.0 Battery Mode 2025-01-14 14:15:49 0.0 0.0 81.2 1418 1518.0 1432.0 53.1 100 0.0 3.0 229.8 50.0 Battery Mode 2025-01-14 14:16:48 0.0 0.0 81.2 1418 1541.0 1433.0 53.1 100 0.0 3.0 230.2 50.0 Battery Mode 2025-01-14 14:17:50 0.0 0.0 81.2 1418 1518.0 1432.0 53.1 100 0.0 3.0 230.0 50.0 Battery Mode 2025-01-14 14:18:50 0.0 0.0 77.1 1443 1564.0 1467.0 53.1 100 0.0 3.0 230.0 49.9 Battery Mode 2025-01-14 14:19:49 0.0 0.0 72.5 1422 1564.0 1466.0 53.0 100 0.0 4.0 229.9 50.0 Battery Mode 2025-01-14 14:20:50 0.0 0.0 72.5 1427 1563.0 1458.0 53.0 100 0.0 4.0 229.9 50.0 Battery Mode 2025-01-14 14:21:49 0.0 0.0 80.2 1443 1564.0 1471.0 53.0 100 0.0 3.0 230.1 50.0 Battery Mode 2025-01-14 14:22:49 0.0 0.0 76.4 1465 1564.0 1466.0 53.0 100 0.0 3.0 230.1 50.0 Battery Mode 2025-01-14 14:23:49 0.0 0.0 76.4 1471 1565.0 1472.0 53.1 100 0.0 3.0 229.9 50.0 Battery Mode 2025-01-14 14:24:50 0.0 0.0 77.6 1496 1587.0 1514.0 53.0 100 0.0 3.0 229.8 50.0 Battery Mode 2025-01-14 14:25:48 0.0 0.0 75.1 1475 1587.0 1523.0 53.0 100 0.0 4.0 230.1 50.0 Battery Mode 2025-01-14 14:26:48 0.0 0.0 77.6 1468 1587.0 1522.0 52.9 100 0.0 4.0 230.0 50.0 Battery Mode 2025-01-14 14:27:49 0.0 0.0 76.4 1443 1587.0 1514.0 52.9 100 0.0 4.0 230.0 50.0 Battery Mode 2025-01-14 14:28:49 0.0 0.0 72.9 1408 1586.0 1509.0 52.7 100 0.0 5.0 229.9 50.0 Battery Mode 2025-01-14 14:29:48 0.0 0.0 78.9 1399 1587.0 1512.0 52.6 100 0.0 5.0 230.0 50.0 Battery Mode 2025-01-14 14:30:50 0.0 0.0 77.6 1391 1585.0 1509.0 52.5 100 0.0 5.0 230.0 50.0 Battery Mode 2025-01-14 14:31:49 0.0 0.0 78.6 1375 1656.0 1576.0 52.3 100 0.0 7.0 230.0 50.0 Battery Mode 2025-01-14 14:32:49 0.0 0.0 76.4 1360 1655.0 1574.0 52.1 100 0.0 7.0 229.9 50.0 Battery Mode 2025-01-14 14:33:48 0.0 0.0 77.6 1357 1633.0 1531.0 52.0 100 0.0 6.0 230.0 50.0 Battery Mode 2025-01-14 14:34:48 0.0 0.0 77.1 1350 1633.0 1534.0 51.9 100 0.0 6.0 230.1 50.0 Battery Mode 2025-01-14 14:35:50 0.0 0.0 77.2 1352 1609.0 1516.0 51.8 100 0.0 6.0 229.9 50.0 Battery Mode 2025-01-14 14:36:50 0.0 0.0 76.4 1345 1564.0 1470.0 51.7 100 0.0 5.0 230.1 50.0 Battery Mode 2025-01-14 14:37:51 0.0 0.0 76.1 1348 1564.0 1470.0 51.6 100 0.0 5.0 230.0 50.0 Battery Mode 2025-01-14 14:38:50 0.0 0.0 78.1 1369 1564.0 1467.0 51.6 100 0.0 5.0 230.0 50.0 Battery Mode 2025-01-14 14:39:50 0.0 0.0 78.1 1373 1564.0 1465.0 51.6 100 0.0 5.0 230.0 50.0 Battery Mode 2025-01-14 14:40:50 0.0 0.0 74.7 1366 1564.0 1474.0 51.5 100 0.0 5.0 230.1 50.0 Battery Mode 2025-01-14 14:41:50 0.0 0.0 77.9 1391 1563.0 1467.0 51.5 100 0.0 4.0 229.9 49.9 Battery Mode 2025-01-14 14:42:50 0.0 0.0 77.9 1369 1564.0 1465.0 51.5 100 0.0 5.0 230.1 50.0 Battery Mode 2025-01-14 14:43:49 0.0 0.0 79.6 1347 1541.0 1461.0 51.4 100 0.0 5.0 229.9 50.0 Battery Mode 2025-01-14 14:44:50 0.0 0.0 77.2 1335 1564.0 1459.0 51.3 100 0.0 5.0 230.0 50.0 Battery Mode 2025-01-14 14:45:50 0.0 0.0 77.7 1318 1563.0 1489.0 51.3 100 0.0 6.0 230.0 50.0 Battery Mode 2025-01-14 14:46:51 0.0 0.0 77.7 1306 1539.0 1454.0 51.2 100 0.0 6.0 230.0 50.0 Battery Mode 2025-01-14 14:47:50 0.0 0.0 78.4 1289 1564.0 1466.0 51.1 100 0.0 6.0 229.9 49.9 Battery Mode 2025-01-14 14:48:50 0.0 0.0 76.7 1277 1563.0 1475.0 51.0 100 0.0 6.0 229.9 50.0 Battery Mode 2025-01-14 14:49:50 0.0 0.0 77.6 1269 1563.0 1455.0 51.0 100 0.0 7.0 230.0 50.0 Battery Mode 2025-01-14 14:50:51 0.0 0.0 73.7 1242 1518.0 1415.0 50.9 100 0.0 6.0 230.1 50.0 Battery Mode 2025-01-14 14:51:50 0.0 0.0 78.6 1252 1517.0 1439.0 50.9 100 0.0 7.0 230.0 50.0 Battery Mode 2025-01-14 14:52:50 0.0 0.0 78.1 1261 1518.0 1417.0 50.8 100 0.0 6.0 229.9 50.0 Battery Mode 2025-01-14 14:53:50 0.0 0.0 78.1 1264 1518.0 1420.0 50.8 100 0.0 6.0 230.1 50.0 Battery Mode 2025-01-14 14:54:50 0.0 0.0 76.4 1262 1516.0 1409.0 50.7 100 0.0 6.0 229.9 50.0 Battery Mode 2025-01-14 14:55:51 0.0 0.0 77.4 1273 1518.0 1410.0 50.7 100 0.0 5.0 230.1 50.0 Battery Mode 2025-01-14 14:56:48 0.0 0.0 78.1 1286 1563.0 1465.0 50.6 100 0.0 6.0 230.1 50.0 Battery Mode 2025-01-14 14:57:50 0.0 0.0 78.1 1284 1562.0 1476.0 50.6 100 0.0 6.0 229.8 50.0 Battery Mode 2025-01-14 14:58:49 0.0 0.0 77.2 1273 1587.0 1480.0 50.5 100 0.0 7.0 230.0 50.0 Battery Mode 2025-01-14 14:59:50 0.0 0.0 78.1 1261 1586.0 1474.0 50.4 100 0.0 7.0 229.9 49.9 Battery Mode 2025-01-14 15:00:49 0.0 0.0 92.6 408 620.0 372.0 50.5 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:01:49 0.0 0.0 92.7 358 552.0 312.0 50.5 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:02:51 0.0 0.0 94.7 45 575.0 312.0 50.4 100 0.0 6.0 230.1 50.0 Battery Mode 2025-01-14 15:03:51 0.0 0.0 92.1 357 551.0 300.0 50.5 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:04:50 0.0 0.0 92.1 337 551.0 308.0 50.5 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:05:49 0.0 0.0 91.6 398 552.0 311.0 50.5 100 1.0 0.0 230.1 50.0 Battery Mode 2025-01-14 15:06:51 0.0 0.0 91.6 388 574.0 313.0 50.5 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:07:49 0.0 0.0 91.6 378 552.0 307.0 50.5 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:08:49 0.0 0.0 91.6 368 552.0 306.0 50.5 100 1.0 0.0 230.2 50.0 Battery Mode 2025-01-14 15:09:51 0.0 0.0 91.6 363 575.0 318.0 50.5 100 1.0 0.0 230.1 50.0 Battery Mode 2025-01-14 15:10:49 0.0 0.0 91.6 358 575.0 318.0 50.5 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:11:51 0.0 0.0 91.6 348 575.0 308.0 50.6 100 0.0 0.0 230.1 50.0 Battery Mode 2025-01-14 15:12:51 0.0 0.0 91.4 358 574.0 319.0 50.6 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:13:50 0.0 0.0 90.9 429 597.0 336.0 50.6 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:14:50 0.0 0.0 90.9 424 598.0 355.0 50.6 100 1.0 0.0 230.1 50.0 Battery Mode 2025-01-14 15:15:50 0.0 0.0 90.9 424 598.0 349.0 50.6 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:16:50 0.0 0.0 90.9 430 597.0 340.0 50.7 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:17:51 0.0 0.0 90.9 425 598.0 347.0 50.7 100 1.0 0.0 230.0 49.9 Battery Mode 2025-01-14 15:18:50 0.0 0.0 91.1 420 621.0 358.0 50.7 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:19:51 0.0 0.0 91.1 415 621.0 369.0 50.7 100 1.0 0.0 230.1 49.9 Battery Mode 2025-01-14 15:20:50 0.0 0.0 91.1 410 598.0 350.0 50.7 100 1.0 0.0 230.1 50.0 Battery Mode 2025-01-14 15:21:51 0.0 0.0 90.6 456 667.0 407.0 50.7 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:22:50 0.0 0.0 90.6 456 667.0 407.0 50.7 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:23:51 0.0 0.0 90.6 456 667.0 415.0 50.8 100 1.0 0.0 230.2 49.9 Battery Mode 2025-01-14 15:24:51 0.0 0.0 90.7 471 644.0 397.0 50.8 100 1.0 0.0 230.2 50.0 Battery Mode 2025-01-14 15:25:50 0.0 0.0 90.9 446 620.0 354.0 50.8 100 1.0 0.0 229.7 50.0 Battery Mode 2025-01-14 15:26:51 0.0 0.0 91.1 426 598.0 352.0 50.8 100 1.0 0.0 230.2 50.0 Battery Mode 2025-01-14 15:27:49 0.0 0.0 91.1 406 597.0 340.0 50.8 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:28:50 0.0 0.0 91.1 396 598.0 346.0 50.8 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:29:50 0.0 0.0 91.1 391 597.0 344.0 50.8 100 0.0 0.0 229.9 49.9 Battery Mode 2025-01-14 15:30:50 0.0 0.0 90.9 386 598.0 341.0 50.9 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:31:51 0.0 0.0 90.7 401 598.0 343.0 50.9 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:32:49 0.0 0.0 90.7 396 621.0 355.0 50.9 100 0.0 0.0 230.2 50.0 Battery Mode 2025-01-14 15:33:49 0.0 0.0 90.7 391 597.0 353.0 50.9 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:34:50 0.0 0.0 90.7 391 621.0 364.0 50.9 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:35:49 0.0 0.0 90.7 391 598.0 350.0 50.9 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:36:49 0.0 0.0 90.7 396 597.0 349.0 50.9 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:37:50 0.0 0.0 90.9 397 621.0 354.0 50.9 100 0.0 0.0 230.1 50.0 Battery Mode 2025-01-14 15:38:51 0.0 0.0 90.9 392 597.0 350.0 51.0 100 0.0 0.0 229.8 50.0 Battery Mode 2025-01-14 15:39:50 0.0 0.0 90.9 392 621.0 351.0 51.0 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:40:49 0.0 0.0 90.9 386 598.0 350.0 51.0 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:41:50 0.0 0.0 90.9 381 598.0 341.0 51.0 100 0.0 0.0 230.1 50.0 Battery Mode 2025-01-14 15:42:50 0.0 0.0 90.9 382 574.0 336.0 51.0 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:43:51 0.0 0.0 90.7 397 575.0 324.0 51.0 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:44:51 0.0 0.0 90.2 453 643.0 394.0 51.0 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:45:51 0.0 0.0 90.4 438 620.0 357.0 51.1 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:46:51 0.0 0.0 90.4 438 620.0 361.0 51.1 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:47:51 0.0 0.0 90.6 439 620.0 354.0 51.1 100 1.0 0.0 229.9 49.9 Battery Mode 2025-01-14 15:48:51 0.0 0.0 90.9 388 551.0 297.0 51.2 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:49:51 0.0 0.0 90.9 383 551.0 304.0 51.2 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:50:51 0.0 0.0 91.1 383 529.0 295.0 51.2 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:51:52 0.0 0.0 91.1 378 552.0 304.0 51.2 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:52:51 0.0 0.0 91.1 379 551.0 294.0 51.3 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 15:53:50 0.0 0.0 91.1 373 552.0 295.0 51.3 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 15:54:52 0.0 0.0 91.2 368 552.0 296.0 51.3 100 1.0 0.0 230.2 50.0 Battery Mode 2025-01-14 15:55:51 0.0 0.0 91.2 369 551.0 301.0 51.3 100 1.0 0.0 230.1 50.0 Battery Mode 2025-01-14 15:56:51 0.0 0.0 91.2 364 552.0 304.0 51.4 100 1.0 0.0 230.2 50.0 Battery Mode 2025-01-14 15:57:50 0.0 0.0 91.2 353 552.0 299.0 51.4 100 0.0 0.0 230.1 50.0 Battery Mode 2025-01-14 15:58:50 0.0 0.0 91.2 353 552.0 305.0 51.4 100 0.0 0.0 230.1 50.0 Battery Mode 2025-01-14 15:59:52 0.0 0.0 91.2 348 552.0 308.0 51.4 100 0.0 0.0 229.8 50.0 Battery Mode 2025-01-14 16:00:50 0.0 0.0 91.2 349 551.0 301.0 51.4 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 16:01:51 0.0 0.0 91.2 344 552.0 294.0 51.4 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 16:02:51 0.0 0.0 91.2 344 552.0 306.0 51.4 100 0.0 0.0 230.1 50.0 Battery Mode 2025-01-14 16:03:50 0.0 0.0 91.2 344 552.0 304.0 51.4 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 16:04:52 0.0 0.0 91.2 344 552.0 297.0 51.4 100 0.0 0.0 230.1 49.9 Battery Mode 2025-01-14 16:05:51 0.0 0.0 91.4 344 551.0 307.0 51.4 100 0.0 0.0 230.0 49.9 Battery Mode 2025-01-14 16:06:50 0.0 0.0 91.4 344 551.0 303.0 51.4 100 0.0 0.0 229.8 50.0 Battery Mode 2025-01-14 16:07:52 0.0 0.0 91.4 344 551.0 298.0 51.4 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 16:08:50 0.0 0.0 90.1 462 644.0 395.0 51.5 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 16:09:51 0.0 0.0 90.1 463 644.0 398.0 51.5 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 16:10:51 0.0 0.0 90.2 463 643.0 394.0 51.5 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 16:11:50 0.0 0.0 90.2 463 666.0 397.0 51.6 100 1.0 0.0 229.8 50.0 Battery Mode 2025-01-14 16:12:51 0.0 0.0 90.7 428 597.0 344.0 51.6 100 1.0 0.0 229.9 50.0 Battery Mode 2025-01-14 16:13:50 0.0 0.0 90.7 423 598.0 352.0 51.7 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 16:14:50 0.0 0.0 88.9 569 575.0 346.0 51.8 100 4.0 0.0 230.0 50.0 Battery Mode 2025-01-14 16:15:52 0.0 0.0 89.1 572 574.0 342.0 52.1 100 4.0 0.0 229.9 50.0 Battery Mode 2025-01-14 16:16:52 0.0 0.0 88.9 574 575.0 335.0 52.3 100 4.0 0.0 229.9 49.9 Battery Mode 2025-01-14 16:17:51 0.0 0.0 89.1 566 598.0 353.0 52.5 100 3.0 0.0 230.1 49.9 Battery Mode 2025-01-14 16:18:52 0.0 0.0 88.9 580 598.0 353.0 52.8 100 4.0 0.0 230.2 50.0 Battery Mode 2025-01-14 16:19:51 0.0 0.0 91.2 405 575.0 342.0 52.7 100 1.0 0.0 230.0 50.0 Battery Mode 2025-01-14 16:20:52 0.0 0.0 91.2 405 597.0 346.0 52.7 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 16:21:51 0.0 0.0 91.2 399 597.0 347.0 52.7 100 0.0 0.0 229.8 50.0 Battery Mode 2025-01-14 16:22:51 0.0 0.0 91.2 394 598.0 349.0 52.7 100 0.0 0.0 230.1 50.0 Battery Mode 2025-01-14 16:23:50 0.0 0.0 91.2 389 574.0 342.0 52.7 100 0.0 0.0 229.9 49.9 Battery Mode 2025-01-14 16:24:50 0.0 0.0 91.2 389 598.0 344.0 52.7 100 0.0 0.0 230.1 49.9 Battery Mode 2025-01-14 16:25:52 0.0 0.0 91.2 389 574.0 343.0 52.7 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 16:26:50 0.0 0.0 91.1 395 597.0 347.0 52.7 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 16:27:50 0.0 0.0 91.1 395 597.0 354.0 52.7 100 0.0 0.0 229.9 50.0 Battery Mode 2025-01-14 16:28:52 0.0 0.0 91.1 395 598.0 345.0 52.8 100 0.0 0.0 230.2 50.0 Battery Mode 2025-01-14 16:29:52 0.0 0.0 91.2 395 597.0 354.0 52.8 100 0.0 0.0 229.9 49.9 Battery Mode 2025-01-14 16:30:51 0.0 0.0 91.2 390 598.0 348.0 52.8 100 0.0 0.0 230.1 49.9 Battery Mode 2025-01-14 16:31:52 0.0 0.0 90.4 454 644.0 402.0 52.8 100 0.0 0.0 230.0 50.0 Battery Mode 2025-01-14 16:32:52 0.0 0.0 90.4 449 644.0 393.0 52.9 100 0.0 0.0 230.0 49.9

Yes, it is clear. I am not talking about "almost full" batteries, I am talking about "100%SOC" batteries that went into idle state at 52,6v, so the BMS never requested further charging up to 53,5v from the inverter and I will never be able to measure 53.5v on the terminals. You stated on post "Problem with Pylontech is that even when the data communication from BMS to the inverter is working, the BMS tells the inverter to charge till 53,5V. (=3,57V per cell)" Maybe it is something related to certain firmwares like the ones that you tested from US. Let's agree on the point that BMS in not perfect but, when batteries produced on the same batch (even with consecutive serial numbers) and connected to the same inverter are failing randomly, in my opinion, there is something else than a bad BMS design otherwise, all of them would be failing sooner or later. It is just an opinion.

Some comment on the quote. Technically speaking, in order to produce a current flow it is necessary to create a potential difference between 2 points. If the inverter is creating a voltage of 53,5volt (as you mentioned, it is the charging voltage target) and the battery voltage is around 52v, there will be a current flow from the inverter to the battery due to the difference in potential (voltage) between them. I refer again to the picture where battery modules are resting at 52,6v and no charging current is present. Control modes CC and CV are not relevant for the case as they only define the charging mode that is applied, Constant current or constant voltage. When constant current is applied, the voltage on the battery will rise until it equals charger voltage and the current ceases and in constant voltage mode, the current will be decreasing to cero when charger voltage and battery voltage are the same (no potential difference). In any case, if there is a voltage difference, there is current. How can we explain that batteries on the picture have a voltage of 52,6v, the inverter is producing 53,5v but the charging current is only 0,265amp? According to ohms law, 0.9v (53.5 - 52.6) over a resistance of a few milliohms (typical internal resistance of a battery) should produce dozens of amps. There is something else that is limiting the current across the battery. Based on all the above, it seems that inverter is not always charging at 53.5v because BMS is instructing to do so, or BMS can effectively control charging current.

Again, I am not 100% in agreement. If the inverter is able to send 53,5volt to the stack as you stated, the cells remaining at 52,6v should be still getting charge current but it is not the case because the BMS on each pylon has already stopped the charging process. You can see on my 3rd picture that 4 batteries are showing 100% charge, 0amps and 52,6v. Status is idle. 2 of them were still finishing the charging process with low current. Module #2 is actually higher in voltage (52.671v) than the rest but still charging 0.265amp. The panels were still able to produce 1.5kw but such power was not delivered nor used. The charging information is not sent from inverter to stack. The stack is informing the inverter about the maximum current it can accept based on the number of battery modules connected and their ratings. If you check the picture from watchpower screen, you can see 23amps sent to the stack and each battery module taking a defined amount of current that is not related to battery module voltage. Module 1 has 51.955v and it is taking 8.391amps while module 2 has 51.952v and it is taking 7.816amp from the bus. Higher voltage does not take lower current so, cells are not limiting the charging current. The BMS does. Maybe the manufacturing defect is not on the cells/pouches but on the BMS hardware/firmware when 10 pouches are swollen, but in my opinion it is not a problem of BMS capabilities to manage the charge.

I don't agree 100% with your statement about modulating charging current and voltage. I can see the behaviour of my bank connected to an Axpert with Batteryview and I can see how charging current is varying across each battery module. I never see voltages of 53v either. You can see on the attached pictures that inverter is supplying 23amp at 51volt and some batteries are taking just 2amp while others are taking 7-8 amp. Last picture shows full charge status just reached. If the batteris are communicating with each other and with the inverter, the BMS' can effectively manage charging. In my opinion, it seems that some pylontechs have a premature failing rate that could be related to manufacturing defects and not to the way they are used. I had a faulty unit after 2 year use and it was replaced under warranty. It was connected and used exactly the same way as the other 5 units so, why did the others show no issues? .

Le MPPT est mort à cause de la haute tension. L'expédition en Espagne et la réparation de l'onduleur coûteront sûrement plus cher qu'un nouvel appareil.

It seems it shouldn't be too complicated as long as you pay the fee. This is always a question of money... everywhere... Regularisation application - Building Control Partnership

Glad that you are back and ok. 👍

You should provide more details on brands, models, error code, inverter configuration, etc. Otherwise, it will be very difficult to help.

Could it be related to the latest extreme solar storm? The earth has received massive radiation levels during the last days.

Over panelling is quite common but maximum input voltage must never be exceeded. Many inverters can clip input current when it reaches maximum level but overvoltage will damage the mppt for sure. This is a red line that must not be crossed. I cannot be sure if your inverter can limit input current so, unless someone else has tested it and verified it, I would be cautious.

Generally speaking, I agree with Scorp007. Just for the sake of correctness, 2 comment: "You cannot use panels that exceed 13A voc as this will damage the Inverter and void the warranty" "you cannot use panels that exceed 13A voc" At OC, current is 0 amp. If circuit is open no current flows. They should refer to Isc, not Voc. The MPPT will adjust its own resistance "seen" by the solar array to about 500 ohms(V=IR=10x50). Review the formula: For V=50 and I=10 then V=I*R -> 50=10*R -> R=50/10 = 5 ohm

Overall, yes, but I have only tested it up to 15 amp current. I need to do more testing with higher currents.

I recently bought a DC booster that is able to raise voltage from 12vdc up to 90vdc and 40amp. Convertidor de impulso de DC-DC de 1800W 40A, módulo de fuente de alimentación de 10-60V a 12-90V, convertidor de voltaje ajustable de 1500W 30A 1200W 20A - AliExpress 502 With a simple voltmeter and a little screwdriver you can set input voltage, output voltage and maximum current. You can use a standard 12v battery or your car alternator to recharge the pylons. Maybe an option for you?

Update: 6th Pylontech US2000C added to the system.

Mines are installed in a concrete basement with a 90min fire resistant door. Smoke detector is also in place. If anything catches fire, only the basement will be damaged and I can sleep peacefully every night

It is not microinverters what you have to look for. You need optimizers. it's not the same thing. Optimizers work on low voltage DC while microinverters work on high voltage AC. SolarEdge-Panel Solar fotovoltaico MPPT, P320-5NC4ARS optimizador de potencia, estabiliza el voltaje para mejorar la capacidad - AliExpress 1420

Why not using standard panels and optimizers on shaded ones?

The low production due to partial shading can be mitigated with optimizers installed on the affected panels.

The batteries should work with the SNA5000. Just check protocol and cable pinout. luxpower-compatible-list（LXP-3-6KSNA-ACS3600）230826.pdf (luxpowertek.com)