CATL Solid-State Battery Timeline, Prismatic Energy Density & Powerwall Production Questions, Answered

I lead quality-engineering reviews at CATL. Before that, I spent five years integrating battery packs for energy-storage customers, so I have sat on both sides of the spec table. One rule follows me everywhere: show me the test report before you show me the launch date. The questions below are the ones I answer most often from OEM engineering teams, storage integrators, and sometimes people shopping for security cameras. Here are the straight answers as of April 2025.

On this page:

• Is the CATL solid-state battery in mass production?
• What is the real CATL prismatic lithium-ion battery energy density?
• Where are Tesla Powerwall batteries made? Does CATL make them?
• Does an indoor/outdoor smart solar battery camera like the GC8 use CATL cells?
• Why can two cells with the same density perform differently?
• Should I wait for the next battery chemistry before starting a program?

Is the CATL solid-state battery in mass production?

No. As of April 2025, there is no CATL solid-state battery in mass production, and none is shipping in a volume-market EV. What exists is a public roadmap. CATL is developing all-solid-state cells toward small-batch and pilot production in the 2027 timeframe. Read that sentence carefully: a 2027 target is not a 2026 purchase order.

According to SNE Research's full-year 2024 report, CATL has now held the No. 1 global EV battery position for eight consecutive years. But scale in today's chemistries doesn't tell you when a new chemistry will reach mass manufacturing. I tell OEMs what I tell my own team: a press release is not a shippable cell. In Q1 2024, I watched three customer programs lose schedule while they waited for a next-generation chemistry with no confirmed production date. That delay cost them a ton more than the eventual energy-density gain justified. If your launch date is fixed, the cell you can qualify today is the one that matters.

What is the real CATL prismatic lithium-ion battery energy density?

Prismatic is a cell shape, not a chemistry. CATL makes prismatic cells in several chemistries, so 'CATL prismatic lithium-ion battery energy density' has no single answer. The useful public reference points as of early 2025 are:

• LFP — Shenxing Plus: about 200 Wh/kg at the system level, according to CATL's launch materials from April 2024.
• NCM — Qilin (CTP 3.0): up to 255 Wh/kg at the system level, according to the original Qilin launch information from 2022. Current figures depend on the cell configuration.

Note the phrase 'system level.' That includes the cells plus the busbars, cooling interfaces, and enclosure around them. A cell-level number can look much higher and still describe the same product, which is why RFQs must state exactly what level they are quoting and under what test conditions. When I compare datasheets from different projects side by side, the first thing I check is not the headline number. It is the footnote under the number.

If you are writing a spec for a new pack, include the density level, the discharge rate, and the temperature. That one sentence saves everyone on the program a long, painful design review.

Where are Tesla Powerwall batteries made? Does CATL make them?

The public answer, as of early 2025: Powerwalls are assembled by Tesla at its Gigafactory in Sparks, Nevada. Tesla states Powerwall production is located there (Source: Tesla public materials, accessed January 2025; verify for the specific model in your market). CATL is not a Powerwall cell supplier in current public specifications. If a proposal says 'Powerwall made with CATL cells,' ask for the bill of materials and the cell model number.

The confusion usually comes from Tesla's other products. CATL does supply LFP cells used in Tesla's Megapack production at Tesla's Shanghai Megafactory. That is a different product line and a different supply chain. Never expected to explain this weekly, but brand names travel a lot faster than supply-chain facts.

Does the GC8 solar battery camera use CATL cells?

No. That one is straightforward. An indoor/outdoor smart solar battery camera — including models sold with a GC8 solar battery — is a consumer security device. It uses a small rechargeable lithium battery pack charged by the solar panel, usually cylindrical cells like 18650 or 21700 or a small pouch pack. It does not use automotive-grade CATL prismatic cells.

As of April 2025, I have not seen a legitimate CATL cell specified for the GC8 solar battery or similar camera accessories. If a product listing uses CATL as a trust signal without a cell model number, that is a red flag. A real cell supplier can give you a model number, a country of origin, and a datasheet. For a B2B buyer, the lesson is even bigger: if the battery brand is the only evidence of quality, you don't have evidence yet.

Why can two cells with the same density perform differently?

Because the density number is a test result, not a law of physics. Two cells can both claim 200 Wh/kg, but one may be measured at a low discharge rate on a fresh cell at 25°C, while the other is measured at a higher discharge rate after 300 cycles. Those are different products in real use.

I made this rookie mistake early in my career: I compared two cells by density alone and froze the module design around the better-looking number. The enclosure had to be redone, and the rework cost about a month of schedule. Now every specification I touch gets the same three questions: at what discharge rate, at what temperature, and after how many cycles? If the datasheet doesn't answer them, the datasheet isn't complete. Verifying test conditions up front is five minutes; redesigning a module after the fact is five weeks.

Should I wait for the next battery chemistry before starting a program?

If your program has a hard launch date, no. You can qualify a chemistry that is shipping today. You cannot qualify a roadmap. When a supplier says 'probably by 2027,' that is not a delivery commitment; it is a hope. Hope does not release your product from the factory.

This is where the time-certainty principle kicks in. In March 2024, a customer held their design open for a newer cell with roughly 8% more energy density. The cell arrived late, the program slipped about two quarters, and the extra carrying cost wiped out the density benefit. I would rather build margin with a committable cell than gamble on a maybe.

Qualification is the part buyers underestimate. A cell that looks great on paper still needs cell-level tests, module builds, environmental testing, and safety certification reviews before production. In a best case, that is several months. Starting that clock late is how a 'six-month program' becomes a 'nine-month program.' Pick the mature product, launch on schedule, and put the next chemistry on your roadmap as a separate project.

Specs and production locations above are based on public information as of April 2025. Battery technology moves fast, so verify current datasheets and sourcing on catl.com, tesla.com, and with your supplier before freezing a serious RFQ. And if someone says 'it has CATL inside,' ask for the cell model. I'll ask the same thing.