> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/support-uk/t650/errors/battery-fault.md).

# Battery Fault

What to do when a T650 won't power on or you suspect a battery problem.

{% hint style="info" %}
**Use this page when** the terminal won't turn on, won't charge, or you suspect a battery problem.
{% endhint %}

<details>

<summary>Keywords</summary>

Also called: battery fault, won't turn on, won't power on, dead battery, not charging, no power, flat battery, won't charge. Search terms: battery, power, won't turn on, charging, LED, dead, flat, no power, charger.

</details>

## Symptoms

You may see one or more of the following:

* The terminal won't turn on.
* The terminal won't charge, or shows no charging indicator.
* The battery drains unusually quickly.

**Most likely cause:** the battery is flat and needs charging, or there's a battery fault.

## Resolution

{% stepper %}
{% step %}

### Try to power on the device

Press and hold **Volume Up + Power** together for **30 seconds**.

✅ **If the device turns on** — the battery is working and the device is operational. Stop here. ❌ **If the device doesn't turn on** — continue to Step 2.
{% endstep %}

{% step %}

### Connect the device to a charger

Plug the device into a charger and look for a **red LED indicator light**:

* **If the red LED is blinking:** the battery is charging. Wait until the red LED turns **off** (usually about **15 minutes**), then press the **Power** button to turn the device on.
* **If there is no LED light or no charging indication:** this may be a battery fault — see below.
* **If the red LED keeps blinking and doesn't turn off:** this indicates a battery fault — see below.
  {% endstep %}
  {% endstepper %}

**If the device charges and powers on.** No further action needed.

**If there's no charging indication, or the LED won't stop blinking.** The battery may be faulty — see below.

## Still not working?

{% hint style="info" %}
**The battery may be faulty.**

If the device still won't power on or charge, [contact Support to log a replacement terminal](https://verifoneuk.github.io/CONTACT-FORM./Contact%20Form%20V1.0.1).
{% endhint %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.verifone.com/support-uk/t650/errors/battery-fault.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.