Battery packs
built for your project.
We build custom lithium-ion batteries that fit exactly where you need them. You give us the dimensions and the power requirements, and we handle the build.
Stop building around your battery.
Most batteries come in standard sizes that never seem to fit quite right. You shouldn't have to change your whole design just to fit an off-the-shelf battery pack.
We build packs to fit your space. Whether you need something thin, tall, or a strange shape to clear a mounting bracket, we can build it.
We stock low cost cells for prototyping, but we can source any specific cell your project needs.
V_NOM: 25.2V
C_CAP: 4.2Ah
D_CONT: 60A
DIM: 142 × 43 × 88 mm / 5.6" × 1.7" × 3.5"
How it works.
Tell us the size
Enter the dimensions of your enclosure, the voltage, and the output power you need. We'll work within the space you actually have.
Review the specs
Our tool calculates the optimal configuration and gives you an instant estimate of the dimensions, weight, and price.
Manual review
An engineer reviews your design to ensure the layout, safety systems, and cell selection are perfect for your application.
We build it
Every pack is hand-assembled in our shop and shipped directly to you.
Built for projects where the battery matters.
Custom Vehicles and Robotics
When weight and space are tight, standard battery packs are a headache. We build around your mechanical requirements so you don't have to compromise on your design.
Prototypes and Product Teams
Get production-quality battery builds without needing a massive factory order. We support everything from one-off prototypes to small production runs.
Research and Testing
If you need a specific voltage or cell configuration for a test rig, we can build it. We support the weird configurations most suppliers won't touch.
Industrial Gear
Reliable power for specialized equipment. We build to your exact specs so you know exactly what you're putting into your machine.
Custom builds without the overhead.
We started building batteries because we needed them for our own projects and couldn't find anyone to make them at a reasonable price for small quantities.
Our configurator automates the manual engineering work that usually takes hours, saving us time that we pass on as savings directly to you. It checks our live inventory to make sure we have the parts for your design and provides an instant price.
Build around your requirements.
Generate a configuration, review the specs, and get pricing and lead-time estimates in minutes.
Questions about a specific application? Contact us directly at contact@maxli.shop.