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3xbatt-2xinverter

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noise
2026-04-25 19:00:44 -04:00
parent 9aca623336
commit 396e810895
8 changed files with 421 additions and 33 deletions
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20
eg4battery/README.md
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@@ -5,24 +5,28 @@ RS-485 and publishes per-pack telemetry to MQTT with HA auto-discovery.
## Status: live
As of 2026-04-24, `bat1` is live via `modbus_per_pack` mode on its RS485 port,
reporting all ~65 entities into HA:
All 3 packs publishing in `modbus_per_pack` mode, each on its own FTDI
RS-485 adapter. Per pack, ~70 named entities + 136 raw `register_NN` series:
```
lifepower4_1_pack_voltage 52.56 V (16 cells × 3.285 V)
lifepower4_1_cell_01_voltage 3.285 V
lifepower4_1_cell_16_voltage 3.285 V
lifepower4_1_cell_voltage_delta_mv 2 (outstanding balance)
lifepower4_1_soc 100 %
lifepower4_1_capacity_ah 100.0 Ah
lifepower4_1_temperature_01 21 °C
lifepower4_1_temperature_pcb 55 °C
... plus 14 warning bits, 14 protection bits, all 47 raw registers
lifepower4_1_model "LFP-51.2V100Ah-V1.0"
lifepower4_1_firmware_version "Z03T21"
lifepower4_1_firmware_date "20260206"
... plus 14 warning bits, 14 protection bits, all 136 raw registers
```
`bat2` and `bat3` are wired but unpowered — the daemon logs one warning per
unreachable pack per startup and keeps retrying silently. They'll come online
automatically when the user powers them up.
The decoder maps registers to fields per a layout reverse-engineered from
the EG4 BMS Tool's Mach-O binary (see [`NOTES.md`](./NOTES.md) §"Modbus
polling" and §"Register map"). Each cycle, the daemon issues two Modbus
fn=0x03 reads per pack — block 1 (39 regs at 0x0000) for live status, and
block 2 (91 regs at 0x002D) for counters + model + firmware strings —
mirroring what the vendor BMS Tool itself does.
## Modes