> ## Documentation Index
> Fetch the complete documentation index at: https://learning.kent.co.in/llms.txt
> Use this file to discover all available pages before exploring further.

# Kent M1 Battery Wiring — Cables and Lithium Pairing

> Power cable sizes, ferrite ring fitting, mandatory DC breaker ratings, and the minimum-pack matrix for pairing Kent Lithium Battery models.

Connecting the battery bank to the Kent M1 requires the right cable cross-section, a properly fitted ferrite ring, and a mandatory DC-rated breaker — and if you are pairing the Kent Lithium Battery, the comm cable has a pin-swap that will catch you if you use a standard patch lead. Read everything on this page before you touch the battery terminals.

<Warning>
  **DANGER — a battery bank cannot be switched off at the source.** Verify polarity before closing anything, keep all tools insulated, and never work on live terminals with the battery breaker closed.
</Warning>

## Before you start

* Confirm the battery bank is designed to the minimum-pack matrix — see [Pairing the Kent Lithium Battery](#pairing-the-kent-lithium-battery) below. An undersized bank runs at BMS-limited current with no fault displayed.
* The battery interface accepts **Li-ion or lead-acid, 40–60 V DC**. BMS communication runs over **CAN**.

## Power cabling

| Model       | Cable size         | Terminal torque | Cable OD range |
| ----------- | ------------------ | --------------- | -------------- |
| Kent M1 3KW | **16 mm² (6 AWG)** | **4 N·m**       | 11–16 mm       |
| Kent M1 5KW | **35 mm² (2 AWG)** | **4 N·m**       | 13–18 mm       |
| Kent M1 6KW | **35 mm² (2 AWG)** | **4 N·m**       | 13–18 mm       |

Verify polarity between battery terminals and inverter terminals — check twice, close once.

**Ferrite ring:** the supplied magnetic ring goes on the battery input line, **single pass only**, secured with a cable tie. Do not loop the cable through multiple turns.

## The mandatory battery DC breaker

A DC-rated battery breaker is **mandatory** on every installation:

| Model       | Minimum current | Minimum voltage |
| ----------- | --------------- | --------------- |
| Kent M1 3KW | ≥ 90 A          | ≥ 60 V DC       |
| Kent M1 5KW | ≥ 160 A         | ≥ 60 V DC       |
| Kent M1 6KW | ≥ 180 A         | ≥ 60 V DC       |

<Warning>
  An AC-rated breaker on the battery circuit is not acceptable. The breaker must be rated for DC at the voltages and currents listed above.
</Warning>

## Pairing the Kent Lithium Battery

The **Kent Lithium Battery (F1 family)** is confirmed compatible and recommended with the Kent M1. The table below shows the minimum number of packs per M1 model — charge current is the binding constraint. Fewer packs than this minimum runs the whole system at BMS-limited current, with no fault or alarm displayed.

| Battery model        | Kent M1 3KW | Kent M1 5KW                            | Kent M1 6KW |
| -------------------- | ----------- | -------------------------------------- | ----------- |
| F1-5120 (5.12 kWh)   | 2           | 3                                      | 3           |
| F1-11780 (11.78 kWh) | 1           | 1 (≈96 % charge current) or 2 for full | 2           |
| F1-16080 (16.08 kWh) | 1           | 1                                      | 1           |

If the installed bank is below the matrix minimum, set the inverter **Max charge / discharge current** to packs × pack limit in the battery settings page.

<Warning>
  **The comm cable is a 4-5 crossover — a standard straight RJ45 patch lead will never communicate.**
  The Kent battery RJ45 carries CAN-L on pin 4 and CAN-H on pin 5; the inverter BMS port expects CAN-H on pin 4 and CAN-L on pin 5. Use only the **labelled Kent battery comm cable**.

  Symptom of a straight cable: battery comm faults immediately at first power-up.

  Field fallback if the labelled cable is not available: cut one end and re-terminate with pins 4 and 5 swapped exactly as the source manual instructs for pin-sequence mismatches — never attempt to "fix" this in menus.
</Warning>

<Note>
  Multiple packs parallel at a DC busbar or combiner, up to **16 packs per bank**, addressed by DIP switch. Connect **one master pack's CAN port to the inverter** — not all packs. Set all pack addresses before power-up per the battery guide.
</Note>

<Warning>
  **Pending Kent validation.** \[KNB-VAL-05]
  The exact Kent M1 on-screen battery-brand label and the F1 cable-kit contents are under confirmation. Pairing, the minimum-pack matrix, and the 4-5 crossover rule are **confirmed**. Until published here: select the Pylon-family entry in the BMS-protocol list per the commissioning page and use only the labelled Kent comm cable.
</Warning>

## Lead-acid banks

Fit the supplied **PT1000 temperature sensor** on the battery casing — side or top, away from the terminals — and land the leads into the **TEMP** terminals on the 16-way strip. Set the lead-acid parameters (float, boost, equalization, compensation) in the battery settings page — see [Kent M1 Settings Reference](/m1/settings-reference).

## Common mistakes

* Standard LAN patch lead used as the BMS cable — guaranteed comm failure on this pairing.
* Bank sized by kWh only, ignoring charge current — results in chronic derating with no alarm shown.
* Ferrite ring left in the box, or looped multiple turns instead of a single pass.
* Battery breaker skipped or AC-rated — it must be DC-rated and sized per the table above.

## When to escalate

Escalate to Kent New Energy service only — through your registered Kent partner channel or the Kent service desk details on your work order. Do not contact any third-party or component-manufacturer support line for a Kent-branded system: tickets outside the Kent channel are not tracked, not covered, and can void warranty handling.

## Related pages

* [Kent M1 Comms & Datalogger](/m1/comms-and-datalogger)
* [Kent M1 Settings Reference](/m1/settings-reference)
* [Kent M1 Commissioning](/m1/commissioning)