> For the complete documentation index, see [llms.txt](https://docs.andymark.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.andymark.com/ftc-electronics/nimh-nicad-12v-ftc-battery-charger-am-5473.md).

# NiMH/NiCad 12V FTC Battery Charger (am-5473)

Specifications, charging behavior, and product link for the AndyMark NiMH/NiCad 12V FTC Battery Charger.

![NiMH/NiCad 12V FTC Battery Charger](https://2060440806-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FcQgnvayQud3Xf5sZi0wz%2Fuploads%2FhkxOCLgeX95NZZ0KbBlA%2Fnimh-nicad-12v-ftc-battery-charger-am-5473.jpg?alt=media)

The AndyMark NiMH/NiCad 12V FTC Battery Charger is intended for 12 VDC NiMH and NiCad batteries. It is paired with the [AM Flat Pack Battery](https://andymark.com/products/am-flat-pack-battery) and is compatible with other FTC batteries.

## Specifications

| Specification                                     | Value                                   |
| ------------------------------------------------- | --------------------------------------- |
| AC input                                          | 100–240 VAC, 50/60 Hz, 0.6 A            |
| Rated output-voltage range                        | 1.5–18 VDC                              |
| Supported NiMH battery capacity                   | 1000–8000 mAh                           |
| Charge current for AM Flat Pack Battery (am-5290) | 1.0 A, pulsed constant-current charging |

{% hint style="warning" %}
The 1.5–18 VDC range is the manufacturer-rated output range. AndyMark does not have an independently verified peak-output-voltage specification for am-5473, so do not rely on a precise maximum output-voltage value.
{% endhint %}

## Charging Behavior

The charger detects a full NiMH battery using negative delta-V (-dV) charge termination. It also has an 8-hour maximum-charge-time safety cutoff.

* **Red indicator:** Charging
* **Green indicator:** Charging complete

## AM Flat Pack Battery Compatibility

For the [AM Flat Pack Battery (am-5290)](https://andymark.com/products/am-flat-pack-battery)—a 10-cell, 12 V nominal, 3000 mAh NiMH pack—the am-5473 charges at 1.0 A using pulsed constant-current charging.

## Post-Charge Use

AndyMark does not have a manufacturer-specified post-charge output voltage or maintenance/trickle current for this charger. Do not rely on it as a long-term float charger or as a power supply after the battery is full.

## Protection Features

The charger includes short-circuit, over-current, reverse-polarity, over-temperature, and voltage protection.

[View the NiMH/NiCad 12V FTC Battery Charger product page](https://andymark.com/products/nimh-nicad-12v-ftc-battery-charger)