This python script serves as a playground to determine the register mapping for the renogy smart batteries. I've run --scan-registers against all registers in the range of 0x0000 to 0xFFFF and the example below shows which registers the battery responded to.
I'm still in the process of figuring out which register contains which value.
Both RJ45 jacks are connected to the same RS485 lines on the PCB, so it does not matter which jack is used to connect to the battery.
The UP port also has lines for the activation button which is connected to lines 3 and 4 and allows putting the battery into shelf mode.
--device: Which serial device to use for the RS485 communication
--address: Address of the battery (247 by default, but can be changed by other devices). In the example below, it was changed by the DC-Home app to 0x30.
--scan-addresses: Scan all addresses to determine the address of the battery.
--scan-registers: Scan all registers on the device address to see which ones responds. Take mulitple hours.
--list-devices: List all available serial devices to use for the --device option
Example output for a battery at idle (no current):
Register Address Value Decimal Binary
----------------------------------------------------------------------------
cell_count 0x1388 4 cells
cellvoltage_1 0x1389 3.4 V
cellvoltage_2 0x138a 3.4 V
cellvoltage_3 0x138b 3.4 V
cellvoltage_4 0x138c 3.4 V
unknown_0x138d 0x138d 0x0000 0 0b0000000000000000
unknown_0x138e 0x138e 0x0000 0 0b0000000000000000
unknown_0x138f 0x138f 0x0000 0 0b0000000000000000
unknown_0x1390 0x1390 0x0000 0 0b0000000000000000
celltemp_1 0x139a 23.0 °c
celltemp_2 0x139b 23.0 °c
celltemp_3 0x139c 23.0 °c
celltemp_4 0x139d 22.0 °c
unknown_0x1391 0x1391 0x0000 0 0b0000000000000000
unknown_0x1392 0x1392 0x0000 0 0b0000000000000000
unknown_0x1393 0x1393 0x0000 0 0b0000000000000000
unknown_0x1394 0x1394 0x0000 0 0b0000000000000000
unknown_0x1395 0x1395 0x0000 0 0b0000000000000000
unknown_0x1396 0x1396 0x0000 0 0b0000000000000000
unknown_0x1397 0x1397 0x0000 0 0b0000000000000000
unknown_0x1398 0x1398 0x0000 0 0b0000000000000000
unknown_0x1399 0x1399 0x0003 3 0b0000000000000011
unknown_0x139e 0x139e 0x0000 0 0b0000000000000000
unknown_0x139f 0x139f 0x0000 0 0b0000000000000000
unknown_0x13a0 0x13a0 0x0000 0 0b0000000000000000
unknown_0x13a1 0x13a1 0x0000 0 0b0000000000000000
unknown_0x13a2 0x13a2 0x0000 0 0b0000000000000000
unknown_0x13a3 0x13a3 0x0000 0 0b0000000000000000
unknown_0x13a4 0x13a4 0x0000 0 0b0000000000000000
unknown_0x13a5 0x13a5 0x0000 0 0b0000000000000000
unknown_0x13a6 0x13a6 0x0000 0 0b0000000000000000
unknown_0x13a7 0x13a7 0x0000 0 0b0000000000000000
unknown_0x13a8 0x13a8 0x0000 0 0b0000000000000000
unknown_0x13a9 0x13a9 0x0000 0 0b0000000000000000
unknown_0x13ab 0x13ab 0x0000 0 0b0000000000000000
unknown_0x13ac 0x13ac 0x0001 1 0b0000000000000001
unknown_0x13ad 0x13ad 0x00f0 240 0b0000000011110000
unknown_0x13ae 0x13ae 0x0000 0 0b0000000000000000
unknown_0x13af 0x13af 0x0001 1 0b0000000000000001
unknown_0x13b0 0x13b0 0x00f0 240 0b0000000011110000
unknown_0x13b1 0x13b1 0x0000 0 0b0000000000000000
current 0x13b2 0.0 A
voltage 0x13b3 13.9 V
remaining_charge 0x13b4 99.72 Ah
charge_capacity 0x13b6 100.0 Ah
unknown_0x13b7 0x13b7 0x86a0 34464 0b1000011010100000
unknown_0x13b8 0x13b8 0x0000 0 0b0000000000000000
maximum_voltage? 0x13b9 14.8 V
minimum_voltage? 0x13ba 10.0 V
unknown_0x13bb 0x13bb 0x1388 5000 0b0001001110001000
unknown_0x13bc 0x13bc 0xd8f0 55536 0b1101100011110000
unknown_0x13ec 0x13ec 0x0000 0 0b0000000000000000
unknown_0x13ed 0x13ed 0x00ff 255 0b0000000011111111
unknown_0x13ee 0x13ee 0x0000 0 0b0000000000000000
unknown_0x13ef 0x13ef 0x0000 0 0b0000000000000000
unknown_0x13f0 0x13f0 0x0000 0 0b0000000000000000
unknown_0x13f1 0x13f1 0x0000 0 0b0000000000000000
unknown_0x13f2 0x13f2 0x000e 14 0b0000000000001110
unknown_0x13f3 0x13f3 0x000a 10 0b0000000000001010
unknown_0x13f4 0x13f4 0x0000 0 0b0000000000000000
unknown_0x13f5 0x13f5 0x00c0 192 0b0000000011000000
unknown_0x13f6 0x13f6 0x5050 20560 0b0101000001010000
unknown_0x13f7 0x13f7 0x5441 21569 0b0101010001000001
unknown_0x13f8 0x13f8 0x4830 18480 0b0100100000110000
unknown_0x13f9 0x13f9 0x3130 12592 0b0011000100110000
unknown_0x13fa 0x13fa 0x3531 13617 0b0011010100110001
unknown_0x13fb 0x13fb 0x3133 12595 0b0011000100110011
unknown_0x13fc 0x13fc 0x3332 13106 0b0011001100110010
unknown_0x13fd 0x13fd 0x3039 12345 0b0011000000111001
unknown_0x13fe 0x13fe 0x3031 12337 0b0011000000110001
unknown_0x13ff 0x13ff 0x3030 12336 0b0011000000110000
unknown_0x1400 0x1400 0x3031 12337 0b0011000000110001
unknown_0x1401 0x1401 0x3032 12338 0b0011000000110010
unknown_0x1402 0x1402 0x5242 21058 0b0101001001000010
unknown_0x1403 0x1403 0x5431 21553 0b0101010000110001
unknown_0x1404 0x1404 0x3030 12336 0b0011000000110000
unknown_0x1405 0x1405 0x4c46 19526 0b0100110001000110
unknown_0x1406 0x1406 0x5031 20529 0b0101000000110001
unknown_0x1407 0x1407 0x3253 12883 0b0011001001010011
unknown_0x1408 0x1408 0x2d47 11591 0b0010110101000111
unknown_0x1409 0x1409 0x3100 12544 0b0011000100000000
unknown_0x140a 0x140a 0x3030 12336 0b0011000000110000
unknown_0x140b 0x140b 0x3138 12600 0b0011000100111000
unknown_0x140c 0x140c 0x5245 21061 0b0101001001000101
unknown_0x140d 0x140d 0x4e4f 20047 0b0100111001001111
unknown_0x140e 0x140e 0x4759 18265 0b0100011101011001
unknown_0x140f 0x140f 0x0000 0 0b0000000000000000
unknown_0x1410 0x1410 0x0000 0 0b0000000000000000
unknown_0x1411 0x1411 0x0000 0 0b0000000000000000
unknown_0x1412 0x1412 0x0000 0 0b0000000000000000
unknown_0x1413 0x1413 0x0000 0 0b0000000000000000
unknown_0x1414 0x1414 0x0000 0 0b0000000000000000
unknown_0x1415 0x1415 0x0000 0 0b0000000000000000
unknown_0x1450 0x1450 0x0025 37 0b0000000000100101
unknown_0x1451 0x1451 0x0023 35 0b0000000000100011
unknown_0x1452 0x1452 0x001e 30 0b0000000000011110
unknown_0x1453 0x1453 0x0019 25 0b0000000000011001
unknown_0x1454 0x1454 0x0226 550 0b0000001000100110
unknown_0x1455 0x1455 0x01f4 500 0b0000000111110100
unknown_0x1456 0x1456 0x0032 50 0b0000000000110010
unknown_0x1457 0x1457 0x0000 0 0b0000000000000000
unknown_0x1458 0x1458 0x2ee0 12000 0b0010111011100000
unknown_0x1459 0x1459 0x2710 10000 0b0010011100010000
unknown_0x145a 0x145a 0x1770 6000 0b0001011101110000
unknown_0x145b 0x145b 0x0094 148 0b0000000010010100
unknown_0x145c 0x145c 0x008e 142 0b0000000010001110
unknown_0x145d 0x145d 0x0078 120 0b0000000001111000
unknown_0x145e 0x145e 0x0064 100 0b0000000001100100
unknown_0x145f 0x145f 0x0258 600 0b0000001001011000
unknown_0x1460 0x1460 0x01f4 500 0b0000000111110100
unknown_0x1461 0x1461 0xff9c 65436 0b1111111110011100
unknown_0x1462 0x1462 0xff06 65286 0b1111111100000110
unknown_0x1463 0x1463 0xc568 50536 0b1100010101101000
unknown_0x1464 0x1464 0xcd38 52536 0b1100110100111000
unknown_0x1465 0x1465 0xd508 54536 0b1101010100001000
unknown_0x1466 0x1466 0x0000 0 0b0000000000000000
device_address? 0x1467 0x0030 48 0b0000000000110000
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