Batteries are complex systems, and key ideas like voltage limits, capacity balance, and aging are hard to build intuition for from equations alone.
The two-tank model gives those relationships a physical picture. The tools and articles below turn that picture into something you can inspect, test, and use.
Anode Tank
The uphill reservoir. Its size determines how much lithium you can safely store without plating.
Cathode Tank
The downhill reservoir. It defines how much lithium is available in the first place.
Lithium
The only thing that actually moves. Often the true limiting factor.
Explaining battery concepts, design trade-offs and aging behavior in more depth.
Hi, I'm Lars. I spend a lot of time trying to make sense of batteries.
Most of my work revolves around battery models and diagnostics, building tools that help us look inside a cell and understand how it is built, how it behaves, and how it ages.
Over the years I've seen how difficult it can be to build a real intuition for batteries. They are complex systems, and most explanations focus on isolated effects rather than the bigger picture.
This site is built around a simple idea: if you look at batteries through the right mental models, many things suddenly become much clearer. One example is thinking about a battery as a system of connected tanks: a simple picture that turns out to explain surprisingly many things.
My background is in physical battery modeling. I started with a PhD in thermodynamics-based aging models and later expanded into aging analysis, cell design and swelling prediction in industry. Today I work on battery software at Breathe, translating physical insight into practical tools.
Charge Tanks is where I collect the models, examples, and visual explanations that make these topics easier to reason about.
