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Pack Builder
If you have cells already and are in the process of building a pack, use this tool to balance the pack into even series groups based on cell capacity and IR of each cell.
Build your pack
Pack Planner
If you are in the beginning stages of building a pack and want to figure out what size pack you need to build for your intended application, this is the place for you.
Plan your pack
Powerwall Planner
If you're looking for a way to plan an entire off-grid power system for your home, check out this tool.
Plan your powerwall
Shop Tools & Supplies
If you like & use the tools that we are providing and content that we are writing, feel free to check out all of our product recommendations. We make a small commission when you buy these products, at no cost to you.
Pick up some tools
Cell Saviors Community
Want to join a community of DIY builders and tinkerers? We started a Facebook group for people to ask questions, show off what they're working on, and just connect with one another. Feel free to join us!
Join the community
About Us
Feel free to visit this link to learn more about us. This includes why we are doing what we're doing, how we got into 18650s, and what our goals are with Cell Saviors.
Learn more about us
Upcoming Features & Updates
If you want to stay in the loop on what we've recently done, and what we are planning for in the near future, visit this link. We keep this up-to-date whenever we make changes to the tools suite.
Stay in the loop
Articles & News
Here is where you'll find our guides centered around various aspects of the DIY battery world. You can also find relevant news about Cell Saviors here.
Read our recent articles

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Be the first one to hear about future feature updates that we make throughout the suite of tools found on this site, as well as general Cell Saviors updates.