Power tool batteries · Cells · Custom packs
Australian-built lithium batteries
18V batteries for Makita, DeWalt and Milwaukee tools, Evolve battery upgrades, genuine Molicel cells and custom packs built to suit.
Find my battery
Find the right battery in two taps
Pick your tool brand and the capacity you want. Every battery is 18V and shows exactly which tools it fits.
Our best seller
Evolve battery upgrades
Replacement and upgrade batteries for Evolve electric skateboards, built in our WA workshop and backed by local support.
Custom builds
Custom lithium-ion packs, built to suit
Tell us what you need to power. We design, build and test every pack in our WA workshop.
- Send your requirements. Only the basics are required.
- We reply within 48 hours.
- We design and quote your pack, then build it. Lead time is 3 weeks or more.
We don't build home energy storage or batteries for cars and trucks.
Authorised Seller
Australia's Authorised Molicel Seller
Genuine Molicel 18650 and 21700 cells, sourced directly from Molicel. Every batch comes with a certificate of compliance. Buy smaller quantities online, or talk to us about wholesale.
About Marsen
Powered by our own solar and batteries since 2016
Marsen Energy started with an off-grid power system in regional WA. Today we supply battery builders, tradies, universities, robotics companies and defence projects across Australia.