Proudly Australian Owned & Operated

Proudly Australian Owned & Operated

Now in its 3rd generation of ownership, Master Instruments continues to specialise in the manufacture, importation & distribution of batteries, battery packs & associated equipment such as battery chargers, analysers & power products, for both the consumer & industrial sectors.

Our Products

Our Products

From consumer focused AA batteries to replacement mobile or laptop batteries; or an in-house manufactured medical equipment battery to fully customised battery solutions for mining or defence projects, we.ll have a suitable solution for you.

Retail & Wholesale Support

Retail & Wholesale Support

With over 8000 stocked lines covering a multitude of applications and fitments, MI can support your retail or wholesale business by providing fast and efficient service and quality products. Our strength is our ability to efficiently cater to all size orders.

Custom & Industrial Battery Solutions

Custom & Industrial Battery Solutions

With in-house & offshore manufacturing capabilities specialising in all primary and rechargeable technologies, we have proven results in industries such as mining, medical, defence and more.

Batteries By Application Use

Explore by product category, application or intended use

Batteries By Chemistry

Find your battery by chemistry type both rechargeable & primary

Battery Chargers

Chargers for batteries and electronic devices

Battery Analysers

View our range of battery testers & analysers

Battery Assembly

Custom battery pack assembly provision

Industry Solutions

Explore our capabilities to supply your industry need

Power Products

For all your AC & DC power supplies, UPS, solar power distribution

Battery Assembly Parts

Battery assembly components, parts, leads & connectors

Test & Measurement

Digital test & measurement, telco equipment analogue meters & shunts

Torches & Flashlights

LED & standard torches, flashlight & exit light batteries

Battery Holders & Cases

We cater for a range of battery holders and cases

DC Power Engineering Tools

View our exciting range of Engineering Tools.

Featured Products

Two Way Radio Batteries

Expanded Two-way radio battery range (new models for Icom, Motorola, Vertex/Yaesu and more) - 24 new models! Click Here

Fujitsu C & D Size Adaptors

Make your household AA batteries work double duty with Fujitsu C & D Size battery adaptors.  Click Here

New 16650 Size Protected LiIon Battery

Our popular range of MI protected LiIon torch batteries has a new addition - New 16650 Size premium Sanyo cell!  Click Here

32PC Heatshrink Kit

Engineer Inc Heatshrink Butt Connectors for waterproof connections. Click Here


Clever Buoy


Master Instruments helps power new shark warning system... Read More

MI Sydney HQ is Moving


Master Instruments Sydney Head Office will be moving from its current Marrickville location to a much larger, state of the art premises in Milperra. Read More

Drone Battery Testing


High Rate discharge testing of LiPo battery packs, commonly used in drones, is now much easier thanks to West Mountain Radio Read More

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