> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Masterkey Portable Battery Pack (4200 mAh)

**Type:** Product page · **SKU:** FIT0132 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/masterkey-portable-battery-pack-4200-mah.html ([markdown](https://core-electronics.com.au/masterkey-portable-battery-pack-4200-mah.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

Introduction

The Masterkey battery pack provides 8-9 charges of instant back-up power to many devices and with the included tips for your BlackBerry, Sony PSP, and other mini USB powered devices. Never be without power. Charge your portable device, recharge the PowerPort and your ready to go again.

It also provides a good power source for your robot/Arduino project. Simply plug usb cable to your Arduino and it will power it for more than 10 hours. (Subject to Arduino Components Power consumption)

Device is smaller, lighter, and thinner than the iPhone 3G, and very portable. Slim and pocket sized, Ideal as emergency battery. because it's a Lithium-Ion rechargeable battery and holds charges longer. Rechargeable up to 500 times, and can be recharged via your USB power.

A voltage indicator gives you the battery level at any time with a single click.

Specification

- Output voltage:4200 mAh, 5V@0.7A
- Charing voltage:5V @0.7A
- Lithium-Ion Battery
- Efficency:90%
- Rohs/CE/FCC certificated
- Over charging protection
- Short circuit protection
- Battery charging protection
- Size:101mmx60mmx13mm
 
Shipping List

- Masterkey Power Unit (1 unit)
- Charging USB cable (1 unit)
- Mini USB cable (1 unit)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/f/i/fit0132.png)