Custom lithium-ion packs, built to suit

Custom builds

Custom lithium-ion packs, built to suit

Custom builds paused until April 2027. Thanks for your interest in a custom battery from Marsen Energy. Demand for custom builds has been very high, and to give every current project the time and care it needs, we’re not taking on any new custom build requests until April 2027. Please get back in touch from April and we’ll be happy to talk through your project then. In the meantime, our Molicel cells, battery-building components and replacement batteries are still available to order online.

From compact replacement packs to larger specialist builds, we design, build and test every pack in our WA workshop. Tell us what you need to power and we'll take it from there.

  • Robotics
  • Defence
  • Wheelchairs & mobility
  • PEVs & eFoils
  • Commercial & industrial
Start your quote

We don't build home energy storage or batteries for cars and trucks.

How it works

Three simple steps

  1. Send your requirements. Only the basics are required.
  2. We’ll be in touch from April 2027.
  3. We design and quote your pack, then build it. Lead time is 3 weeks or more.

Get a quote

Tell us about your battery

Six short steps. Only the application, your name and your email are required, so skip anything you're not sure about.

Prefer to talk? Call 0405 160 707 or email sales@marsen.com.au.

What's the battery for?
Power needs

Fill in what you know. Leave anything you're unsure of blank and we'll work it out with you.

Size and fit

The space the battery has to fit in, if there's a limit.

Is it replacing an existing battery?
Quantity and timing

Lead time is at least 3 weeks, and up to 6 months for complex builds.

Your details

Have drawings, photos or a spec sheet? Email them to sales@marsen.com.au with your name after you send this form.