Ask ten battery engineers which cell format is best and you will get ten answers, because the right answer depends entirely on what you are building. The priorities that drive format choice in a phone or an electric car are not the priorities that matter in industrial equipment.
Lithium cells come in three main formats: cylindrical, prismatic, and pouch. Each has a place. This article walks through what each one is good at, then explains why AMP builds the way it does for industrial applications.
The three formats
Cylindrical cells are the familiar metal cans, made in standardized sizes and enormous volumes. Each individual cell is rugged, but a pack needs a lot of them, and every cell is another set of connections to make.
Prismatic cells are larger rectangular cells in a rigid hard case. Fewer cells go into a pack, they stack cleanly, and their terminals sit on a single top face.
Pouch cells are flat cells in a laminated foil pouch. They offer strong energy density for their size and weight, but they are mechanically soft and lean on the surrounding structure to hold their shape and stay connected.
What actually matters in industrial service
A warehouse battery or a battery on a mobile robot is not a sealed consumer gadget you throw away when it stops working. It is a serviceable asset that has to deliver years of uptime and be repairable when something goes wrong. That reframes the whole format decision around three questions: how easily the pack can be built, how easily it can be maintained, and how well the cells hold up to real industrial handling.
Why AMP builds primarily with prismatic
AMP builds primarily with prismatic cells, and the reasons come down to manufacturing and maintenance. Prismatic cells stack cleanly and present their terminals on one top face, which lets us assemble a pack from the top down with bolt-down bus bars. Top-down assembly is faster to build, and it is far easier to service later. When a pack needs attention in the field, a technician works from one accessible face instead of taking the whole assembly apart.
That single face carries a safety and simplicity benefit too. With terminals on top only, there is just one plane we need to protect against an electrical short. A pouch design with tabs on opposite ends of the cell gives you two faces to insulate and manage, which adds complexity and adds risk.
The prismatic cells themselves are also robust, and that toughness is a genuine advantage in industrial service, where vibration, rough handling, and the occasional knock are simply part of the job.
Why not cylindrical
Cylindrical cells are excellent products, and they dominate consumer and EV packs for good reason. For our applications they have been less competitive. Early cylindrical designs gave us trouble with welded connections breaking, and building a pack from many small cells means a large amount of piecework. Every cell is another connection to make and verify, and all of that piece-by-piece labor adds cost while adding more places for a pack to fail.
Why pouch has fallen out of favor
Pouch cells earn their place when energy density is the priority, and AMP still reaches for them when a job genuinely needs to fit the most energy into the smallest, lightest space. Over time, though, pouch has fallen out of favor for us. Because a pouch cell is mechanically soft, the pack has to add structure to hold and support every cell, and then more structure to support the bus bars that connect to the tabs. Each requirement adds parts, and each adds another setup on the fabrication floor. The result is a pack that takes more effort to build and more effort to keep serviceable.
The short version
Prismatic gives us top-down, bolt-together assembly, one face to protect, and cells rugged enough for industrial life. That combination wins on build time and, just as important, on serviceability.
A buyer's tell: look at the enclosure
If you are evaluating an industrial battery and cannot see the cells inside, the enclosure tells you a great deal. A robust, well-built case is a strong signal that the pack inside was built with quality components and real care, because a manufacturer who cut corners on the enclosure usually cut them on the cells too.
Then ask how the pack is serviced. Industrial equipment breaks, that is just reality, and a battery that cannot be opened and repaired becomes a liability in any operation that lives or dies on uptime. Serviceability is central to keeping equipment running, not an afterthought to bolt on later.
The takeaway
The right cell format is the one that fits how a pack will be built, used, and maintained across its whole life, not just how it looks on a spec sheet on day one. If you want to talk through the best approach for your equipment, our Battery Designer lets you explore configurations, or you can talk to an engineer and we will help you find the right fit.