> ## 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 G3 Battery Wiring — Terminals, Limits, and Pairing

> Four M8 battery terminals with 150 A per-cable limit, mandatory dual cables on the 15 kW model, and the Kent Lithium Battery minimum-pack matrix.

Connecting the battery bank to the Kent G3 covers the dual-input terminal layout, the per-cable current ceiling that forces dual cabling on the 15 kW model, and the exact pairing steps for the Kent Lithium Battery.

<Warning>
  **DANGER — verify the battery is OFF and reads 0 V DC** at both cable ends before connecting anything. Follow the battery's own shutdown procedure before you touch the terminals.
</Warning>

## Power Cabling

The G3 provides **two inputs per pole** — BAT+ has two terminals, BAT− has two terminals — four M8 screws total.

| Spec                      | Value                              |
| ------------------------- | ---------------------------------- |
| Terminal screws           | M8 × 4                             |
| Recommended cable         | 2 AWG (33.62 mm²) × 4              |
| Strip length              | 13 mm                              |
| Lug type                  | R-type crimped (do not over-crimp) |
| Max current per input     | 200 A                              |
| Recommended max per cable | ≤ 150 A                            |

<Warning>
  **The 15 kW model's 290 A battery maximum exceeds 150 A per cable.** You must run **dual cables per pole** — one cable per BAT+ input and one cable per BAT− input. A single cable on a 15 kW unit will overheat the lugs at full charge or discharge current.
</Warning>

The battery fuse inside the wire box is **replaceable only by Kent-authorized service technicians**. Never attempt a field repair.

## Pairing the Kent Lithium Battery

The Kent Lithium Battery (F1 family) is confirmed compatible and recommended with the Kent G3. On the battery-model screen, select the **LV Pylon-family entry (PYLON\_LV)**. Never select the HV entry — it is for a different battery voltage range entirely.

### Minimum Packs per Model

The binding constraint is charge current, not capacity. Fewer packs than the matrix specifies runs the system at BMS-limited current with no fault displayed — you will not see an error, but the inverter will not charge at full rate.

| Battery model        | Kent G3 10KW | Kent G3 12KW | Kent G3 15KW |
| -------------------- | ------------ | ------------ | ------------ |
| F1-5120 (5.12 kWh)   | 5 packs      | 5 packs      | 6 packs      |
| F1-11780 (11.78 kWh) | 2 packs      | 3 packs      | 3 packs      |
| F1-16080 (16.08 kWh) | 2 packs      | 2 packs      | 2 packs      |

After sizing, set the inverter **Max charge/discharge current** to packs × the pack's current limit.

Multiple packs parallel at a DC busbar or combiner, up to 16 packs per bank. The **master pack's CAN port connects to the inverter**. Keep each inverter cable at ≤ 150 A. Two F1-16080 packs on a Kent G3 15KW map directly onto the 2+2 terminals at ≤ 145 A per cable.

## CAN Communication Cable

<Warning>
  **The comm cable is a 4-5 crossover — a 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 CAN failure alarm at power-up. If you must re-terminate in the field, swap pins 4 and 5 at one end — never "fix" it in the menus.
</Warning>

Route the BMS cable through **COM2 or COM3** to the BMS RJ45 terminal on the 16-pin block.

In parallel-inverter systems, use one shared battery bank. Its **BMS connects to the master inverter only**.

## Common Mistakes

* Single cable per pole on a 15 kW unit — 290 A over a single 150 A-class cable overheats the lugs.
* Straight LAN patch lead used as the BMS cable — guaranteed CAN failure with this pairing.
* Bank sized by kWh only — charge current is what determines the minimum pack count.
* Attempting a field repair of the wire-box battery fuse.

## Related Pages

* [Kent G3 Comms & Parallel](/g3/comms-and-parallel)
* [Kent G3 Settings Reference](/g3/settings-reference)
* [Kent G3 Commissioning](/g3/commissioning)