Battery Business Glossary

This glossary is for the terms that show up in pitch decks, diligence calls, board meetings, and earnings reports. Because in batteries, knowing the chemistry is not enough. You also need to understand the business mechanics around the chemistry: who owns the IP, who controls the cap table, who actually has revenue, and who is surviving on vibes, warrants, and one very optimistic pilot line.

Translation matters. Especially when the stakes are millions of dollars, years of development, and a technology that may or may not be ready for the sentence “commercial scale.”

Read this Battery Business Glossary before the next investor call, founder meeting, or startup claim that sounds a little too good to be true.

A pass: When an investor declines to invest now but signals they will re-engage at a milestone, usually a later round. Sometimes genuine, sometimes polite ghosting in a Patagonia vest. The job is to figure out which.

A sample / B sample / C sample: The three engineering stages of a battery cell on its way to production. A samples prove the chemistry works in a real cell format. B samples are pre-production cells in the real form factor at meaningful volume. C samples are built on production tooling, which is what an OEM actually qualifies for serial production. Automotive customers are sticklers about which gate you are at and which line built the cell. 

Accelerator: Short, cohort-based program, usually 3 to 6 months. Takes a small equity stake in exchange for cash, mentorship, and a demo day. Y Combinator is the prototype. A useful sprint, not a substitute for customers, chemistry, or a pilot line that behaves.

Asset-Light: A business model that owns less physical infrastructure, such as factories and equipment, and outsources production to contract manufacturers. Trade-off: lower capex and risk, less margin and control. Great until your supplier becomes the main character.

Backlog: Future revenue already under contract but not yet delivered. For a project-based business like Fluence, backlog is the leading indicator that matters most. A growing backlog means orders are coming in faster than you can fulfill them. Champagne problem, but still a problem.

BAU (Business as Usual): Status quo. Nothing special happening. Often used to describe what is not worth a meeting, which is most meetings, spiritually.

Burn Rate: How fast a company is spending cash, usually expressed monthly. A startup burning $2M/month with $24M in the bank has 12 months of runway. Battery startups have famously high burn rates because the capex is enormous and revenue arrives late.