CTEK CS ONE Gen. 2 Joins BMW Group Aftermarket Program: What It Signals for Shop-Grade Battery Maintenance

Source: PR Newswire / CTEK Newsroom — July 20, 2026

CTEK has secured a supply agreement with BMW Group to deliver a co-branded version of its CS ONE Gen. 2 battery charger through BMW's aftermarket channels across selected markets, with deliveries expected to begin in Q3 2026. For shops stocking battery maintenance equipment, the announcement is worth paying attention to for a few practical reasons.

Why an OEM Deal Matters to a Shop Buyer

When a charger line earns a slot in an OEM's aftermarket portfolio, it typically means the underlying technology has cleared a more demanding validation process than retail certification alone. BMW Group's aftermarket program is not a co-marketing arrangement. It involves actual supply chain integration and co-branding, which puts liability for performance squarely on the product. That is a meaningful signal about the platform's reliability floor.

The CS ONE Gen. 2 features CTEK's APTO (Adaptive Pulse Technology Optimized) charging algorithm, designed to work across both 12V lead-acid and lithium battery chemistries without requiring the technician to manually select a profile. It also includes Wi-Fi and Bluetooth connectivity for remote monitoring. For a shop running multiple bays, that reduces the likelihood of a charger being left unattended on the wrong setting or a battery going unmonitored overnight.

The Multi-Chemistry Case for Fleet and Race Shop Buyers

The shift toward lithium batteries in performance and late-model vehicles is real and accelerating. Shops that serve BMW-platform customers, or any mixed fleet of modern vehicles, are increasingly managing both lead-acid and lithium batteries in the same service bay. A charger that handles both chemistries correctly without a manual toggle reduces technician error and protects against warranty exposure on a mismanaged battery.

Buying a charger line that is also sitting in an OEM's approved parts catalog provides some downstream assurance: the product is unlikely to be discontinued without notice, and replacement units or firmware updates have an institutional reason to stay supported.

What Bulk55 Carries Now

The CS ONE Gen. 2 is not yet in our catalog. If you are looking for CTEK's CS-series adaptive charging technology available today, the CTEK CS Free Portable Charger (6-Count) is the current CS-line option we stock. The CS Free uses adaptive charging and operates without a fixed power connection, making it practical for pit lane use, vehicle storage maintenance, or shops without a dedicated charging station at every bay. It is priced at $998.99 for a case of six, putting the per-unit cost well below single-unit retail.

If you want to be notified when CS ONE Gen. 2 units become available, contact us directly. We track new CTEK SKUs as they enter distribution and can set up advance purchasing arrangements for qualified accounts.

Buying Considerations at Volume

• Per-unit cost: Case-pack pricing on CTEK equipment through Bulk55 consistently undercuts single-unit retail, which matters if you are equipping multiple bays or reselling to fleet accounts.
• Chemistry coverage: Confirm that any charger you stock handles both lead-acid and lithium profiles, especially if your customer base includes late-model European vehicles.
• OEM validation: For shops that bill warranty labor, using equipment that aligns with OEM-approved tooling can simplify documentation and dispute resolution.

Questions about volume pricing or lead times on CTEK equipment? Contact the Bulk55 team directly.