LAS VEGAS-Chinese battery manufacturer Marstek is making waves at CES 2026 with a new lineup of portable power solutions, unveiled this week at the industry trade show. [[1]]The company showcased USB-C rechargeable AA/AAA batteries, rugged power banks, and a particularly notable solar generator, the V500, aimed at both outdoor enthusiasts and those seeking reliable backup power. [[2]][[3]] Initial reports from the show floor suggest a focus on practical design and finish, though thorough testing will be key to evaluating long-term performance.
Chinese battery manufacturer Marstek unveiled three new products at CES 2026, including a particularly noteworthy compact, powerful, and relatively affordable solar battery. We were on-site to get a first look.
Marstek used the CES 2026 show to expand its product line with USB-C rechargeable AA/AAA Li-ion batteries, new rugged power banks, and the V500 solar battery designed for outdoor use.
Initial impressions from the show floor indicate well-finished and practical products, though a comprehensive review will be needed to assess long-term endurance, thermal performance, and reliability. The growing demand for portable power solutions is driving innovation in this sector.
V500: A Solar Battery for the Outdoors
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The MARSTEK V500 is positioned as a waterproof solar generator with a 500W output (1000W peak), making it suitable for sensitive electronics like laptops and cameras rather than high-demand appliances.
Marstek also highlights a 2 kWh LFP (lithium-iron-phosphate) chemistry and an IP65 design (dust and water resistance), geared towards camping, van life, and backup power applications.
The company specifies a 500W PV (solar panel) input, a 750W AC input, and the ability to power devices while simultaneously recharging the station.
In essence, the V500 prioritizes autonomy and versatility over raw performance, a common requirement among van owners.
P326D / P327D: Rugged Power Banks
Marstek also showcased the P326D and P327D, portable power banks for charging devices via USB, featuring a TFT screen displaying battery level, charge/discharge status, and real-time power output.
A key feature is the IPX7 rating, designed for more confident use in rainy conditions or even accidental immersion, ideal for hiking, boating, or fishing.
Another well-considered feature is a detachable USB-C to USB-C cable that also serves as a lanyard, with the ability to charge two devices simultaneously and a fast-charge capability of up to 65W on one port.
The company also notes “certified airplane safety,” a common claim for power banks, but the exact capacity (in Wh) will need to be verified depending on the version, as this determines cabin acceptance.
Lithium AA/AAA Batteries: The Return of 1.5V
Finally, a more subtle but potentially impactful addition: rechargeable Li-ion (lithium) batteries in AA and AAA formats, with USB-C charging. Marstek emphasizes a stable 1.5V nominal voltage, a key consideration for devices that perform better with 1.5V compared to traditional rechargeable Ni-MH batteries (typically 1.2V).
The company also advertises 80% charge retention after 3 years of storage, up to 1,500 cycles, and discharge capability down to -20°C, targeting outdoor use cases like flashlights and camera accessories.
The product page presents this line as Li-ion AA/AAA (kits available depending on the packs), confirming its positioning as a simple replacement for everyday batteries.
First Impressions and Pricing: Promising, Pending Testing
After a visit to the booth, the initial impression is positive: serious finishes, a comfortable product feel, and a practical design that is immediately apparent (readable screen, accessories designed for mobile use).
However, significant unknowns remain that only testing can validate: the real-world performance of the 2 kWh capacity, inverter behavior under sustained load, noise/thermal management, and the long-term durability of the waterproofing.
Notably, Marstek indicated a European price for the V500 between €300 and €400, which, if confirmed at launch, would position it aggressively against stations with comparable capacity.
It remains to be seen what compromises were made (connectivity, warranties, availability of parts/service in Europe), as this is often where the difference lies between a good deal and a risky purchase.
