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Qi2 First Look: Elecdov C01S — Full Compatibility Test with Galaxy Watch Ultra2, Watch9 & Galaxy S26 Ultra

Elecdov C01S Black Edition is the first to ship — designed specifically for Samsung’s new August 2026 charging ecosystem.

Samsung’s August 2026: Three Devices, One Ecosystem Challenge

Elecdov-C01-Window-side_Garden_Leisure

Elecdov C01S tested against Samsung Galaxy Watch Ultra2 and Galaxy Watch9 — WPC Qi2 compatible charging.

Samsung’s July 2026 Galaxy Unpacked event in London produced three products that collectively create a new multi-device charging challenge for every Samsung user:

Aug 7
Galaxy Watch Ultra2 GA
Aug 7
Galaxy Watch9 GA
+35%
Ultra2 Battery vs. Prior Gen
Qi2.2
Wireless Standard (S26 Ultra)

Users who pre-ordered the Galaxy Watch Ultra2 (47mm titanium, 800mAh, 5,000-nit display) or Galaxy Watch9 (40mm/44mm aluminum, 390mAh) alongside the Galaxy S26 Ultra now face a practical question that Samsung doesn’t fully answer in its marketing materials: what is the best way to charge all three devices simultaneously without compromising on speed, safety, or certification compliance?

The official Samsung answer — the EP-P2900TBTGTW Magnet Wireless Charger at $49.99 USD — charges only one device. And it ships in Dark Gray, matching only one color family in Samsung’s palette. The Elecdov C01S addresses both gaps: a single FCC-certified 3-in-1 station that charges Galaxy S26 Ultra, Watch Ultra2/Watch9, and Galaxy Buds simultaneously, with the Black Edition shipping now from the first production batch.

“Samsung’s charging ecosystem is more complex in 2026 than ever before. The Watch Ultra2 and Watch9 use different WPC charging profiles than the phone — and not all chargers handle both correctly. The C01S was engineered specifically for Samsung’s implementation.”
— Elecdov Engineering, August 2026
Q: Does the Galaxy Watch Ultra2 require a different charger than the Watch9?
A: Both use WPC-based fast wireless charging at the same 2.5W rate, but the Watch Ultra2’s 800mAh battery takes longer to charge than the Watch9’s 390mAh. The C01S handles both identically — the watch pad auto-detects and delivers the correct profile for either model.
Q: Can I use the same magnetic case for Galaxy S26 Ultra with C01S as with Samsung’s own charger?
A: Yes. Any Qi2-compatible magnetic case (TORRAS MegaMag, ESR Classic Hybrid, Samsung’s own Magnet Case) works with the C01S phone pad. The C01S magnetic ring provides the same snap-on alignment experience as Samsung’s official EP-P2900TBTGTW, but adds two more zones for watch and earbuds.

Understanding Qi2 Compatibility Across the New Galaxy Lineup

Elecdov-C01-Desk_Office_Workstation

Qi2 Magnetic Power Profile (MPP) enables the snap-on alignment that makes 25W fast wireless charging safe and efficient.

Qi2 is the Wireless Power Consortium’s second-generation standard that brought magnetic alignment to Android for the first time, matching Apple’s MagSafe experience. Here’s how it breaks down across Samsung’s August 2026 products:

Device Qi Standard Max Wireless Speed Magnetic Support Notes
Galaxy S26 Ultra Qi2.2 (EPP) 25W Requires magnetic case 50% in 33 min with 45W adapter + Qi2 case
Galaxy Watch Ultra2 WPC Qi 2.5W Built-in (watch strap) Snap-on charging puck; WPC-specific profile
Galaxy Watch9 WPC Qi 2.5W Built-in (watch strap) Same WPC profile as Ultra2; smaller battery = faster full charge
Galaxy Buds3 Pro Universal Qi 5W N/A Flat wireless charging pad; any Qi charger works

A critical distinction many reviewers miss: the Galaxy Watch Ultra2 and Watch9 use the WPC’s standard Qi protocol, not Qi2 MPP. They have built-in charging coils and magnetic rings designed for Samsung’s own snap-on charging puck. They are not Qi2 Extended Power Profile (EPP) devices — they are standard WPC Qi devices with a magnetic physical interface. This means a charger that works perfectly for iPhone 16 Pro Max (Qi2 MPP 15W) may not correctly charge a Galaxy Watch.

Case Study: Why Generic Qi2 Chargers Fail Samsung Watches

A user buys a third-party “Qi2 3-in-1” charger advertised for iPhone 16 + Apple Watch + AirPods. When they try to charge their Galaxy Watch Ultra2 on the watch zone, it either doesn’t start charging, charges very slowly, or pops up an “incompatible accessory” warning. This is because the watch zone in many generic chargers is calibrated to Apple Watch’s specific frequency and power curve, not Samsung’s WPC implementation. The C01S watch zone was specifically tuned for Samsung’s WPC protocol used in Galaxy Watch Ultra2 and Watch9.

Q: Is the C01S watch zone compatible with Apple Watch as well?
A: The C01S watch zone is calibrated for Samsung Galaxy Watch (WPC profile). Apple Watch uses a different charging protocol. For Apple Watch users, Elecdov recommends the WC01A (2-in-1 for iPhone + Apple Watch). The C01S is optimized exclusively for Samsung Galaxy Watch Ultra2, Watch9, and earlier Galaxy Watch models.
Q: What’s the difference between Qi2.2 and Qi2.1 for Galaxy S26 Ultra wireless charging?
A: Qi2.2 introduced the Extended Power Profile (EPP) at 25W, with stricter thermal monitoring requirements. Qi2.2 chargers must enforce a <40°C surface temperature on the charging coil during full-power output. The C01S phone zone operates within Qi2 EPP parameters and delivers up to 15W to Galaxy S26 Ultra — below the 25W maximum to ensure thermal safety in a 3-in-1 configuration.

Elecdov C01S: The First Charger Built for All Three Devices

Elecdov C01S factory certified production

Elecdov C01S — FCC-certified, Samsung Galaxy Watch WPC-optimized, shipping now in Black.

The Elecdov C01S was developed as a direct response to the fragmentation in Samsung’s charging ecosystem. Before the August 2026 Galaxy Watch launch, most Samsung-focused 3-in-1 chargers on the market were calibrated for Apple Watch compatibility — leaving Galaxy Watch users with compatibility gaps, slow charges, or no-charge errors.

The C01S resolves this with a three-zone architecture, each independently calibrated:

Zone Target Device Max Output Calibration Certification
Phone Pad (flat) Galaxy S26 Ultra / S25 Ultra / S24 Ultra 15W Qi BPP+EPP aligned FCC
Watch Pad (angled) Galaxy Watch Ultra2 / Watch9 / Watch8 / Watch7 2.5W WPC Samsung profile FCC
Earbuds Pad (flat) Galaxy Buds3 Pro / Buds2 Pro / any Qi earbuds 5W Universal Qi FCC
USB-A/C passthrough Backup phone, battery pack 15W combined Standard PPS FCC

Elecdov Engineer’s Note

The watch pad’s angled design is intentional: it matches the natural resting angle of Galaxy Watch Ultra2’s 47mm titanium case and Watch9’s aluminum case. When placed correctly, the watch magnetically snaps to the optimal coil position. The watch display automatically switches to Nightstand Mode (if enabled), showing time and alarm while charging overnight.

Q: Does the C01S support fast charging for Galaxy S26 Ultra at the full 25W?
A: The C01S delivers up to 15W to the Galaxy S26 Ultra on the phone pad, which is above the Qi2 BPP standard (15W) and matches Samsung’s Qi2 EPP implementation for the S25/S24 Ultra. Full 25W charging is available via Samsung’s EP-P2900TBTGTW single-device charger. For a 3-in-1 station, 15W is the practical ceiling that ensures safe thermal performance across all three simultaneous zones.
Q: How does the C01S compare to Samsung’s own EP-P2900TBTGTW charger?
A: Samsung’s EP-P2900TBTGTW (25W, $49.99) is a single-device charger optimized for phone-only fast charging. The Elecdov C01S ($32.99) is a 3-in-1 that charges phone + watch + earbuds simultaneously — the trade-off is 15W phone output instead of 25W. If speed for the phone alone is your priority, Samsung’s own charger wins. If you have a watch and earbuds to charge too, the C01S eliminates two additional cables.

Compatibility Matrix: Galaxy Watch Ultra2 vs. Watch9 on C01S

Elecdov-C01-Living_Room_Video_Call

C01S watch pad — optimized for both Galaxy Watch Ultra2 (47mm) and Galaxy Watch9 (40/44mm).

Both Galaxy Watch Ultra2 and Galaxy Watch9 use Samsung’s WPC-based charging standard. The C01S handles them identically in terms of protocol — but there are practical differences in placement and full-charge time:

Parameter Galaxy Watch Ultra2 Galaxy Watch9 C01S Handling
Case diameter 47mm 40mm / 44mm Ultra2 fits fully; Watch9 centered
Charging profile WPC Qi 2.5W WPC Qi 2.5W Identical — no switching needed
Battery capacity 800mAh 390mAh (44mm) Same rate; Ultra2 takes ~2x longer
Full charge time ~100 min ~70 min Overnight — both fully charged by morning
Nightstand Mode Supported Supported Activates automatically on C01S pad
Charging alignment Magnetic snap — optimal Magnetic snap — optimal Angled pad ensures correct coil position

Case Study: The Dual-Watch Household

In a household with Galaxy Watch Ultra2 (partner) and Galaxy Watch9 (user), both watches can be placed on the C01S at the same time — one in the watch zone, one on the phone zone (flat, using a magnetic adapter ring). This workaround is not officially recommended by Samsung, but testing confirms both watches charge successfully on the C01S simultaneously, though at slightly reduced individual speed.

Q: Can the C01S charge the Galaxy Watch Ultra2’s titanium strap band while the watch is charging?
A: No. The watch must be placed face-down on the C01S watch pad with the rear charging coils making contact with the pad surface. The strap band rests on the surface of the charger. The C01S design accommodates the Watch Ultra2’s strap comfortably without applying pressure to the band mechanism.
Q: Does the C01S work with older Galaxy Watch models (Watch7, Watch6, Watch5)?
A: Yes. The C01S watch zone is backwards compatible with Galaxy Watch8, Watch7, Watch6, Watch5, Watch5 Pro, Watch4, Watch4 Classic, Watch3, Watch Active 2, and Watch Active 1 — all of which use the same WPC Qi charging standard. Simply place the watch on the pad and charging begins automatically.

Black Edition First Batch: Color Coordination & Availability

Elecdov C01S 3 In 1 Magnetic Charging for Samsung,Includes Charger Plug

Elecdov C01S Black Edition — coordinating with Galaxy Watch Ultra2 Titanium Gray and Watch9 Graphite.

Elecdov has prioritized the Black Edition of the C01S for first-batch production. The decision was driven by two factors: color coordination with Samsung’s flagship product palette, and immediate manufacturing readiness.

Black
In Stock — Ships Now
White
Early September 2026
Wood grain
Early September 2026
Gray
Mid September 6–10

The Black C01S colorway was specifically chosen to match Samsung’s current flagship color language across three new products: the Titanium Gray of Galaxy Watch Ultra2, the Graphite of Galaxy Watch9 (44mm), and Samsung’s own Dark Gray EP-P2900TBTGTW Magnet Wireless Charger. Placing all four products on a desk creates a unified, professional color palette — no clashing whites or mismatched metal tones.

Other color variants (White, Silver, Deep Blue) are undergoing production optimization and are expected to be available in early-to-mid September 2026. No price difference exists between color variants — all C01S models retail at $33.50 USD.

Elecdov Engineer’s Note

The C01S Black Edition uses the same PCB, coils, magnets, and FCC-certified housing as future color variants. Color is purely a cosmetic difference in the outer shell finish. There is no functional advantage or disadvantage to choosing Black over any other color. All variants undergo identical quality control and burn-in testing before shipping.

Q: If I pre-order a White or Silver C01S, will I be notified when it ships?
A: Standard Elecdov pre-order notifications apply. We recommend purchasing the Black Edition now if you want the earliest possible delivery. Pre-orders for other colors can be placed at elecdov.com and will ship within 3–5 business days of availability. No price protection is offered if the MSRP changes between pre-order and fulfillment.
Q: Is the Black Edition finish prone to showing dust or scratches?
A: The C01S Black Edition uses a matte soft-touch finish that is fingerprint-resistant and scratch-masking. For daily use, it holds up well against desk dust and minor scratches. Like all dark finishes, it may show fine dust particles on close inspection, but these are easily wiped clean with a microfiber cloth.

Article Summary

Samsung’s August 2026 launches (Galaxy Watch Ultra2, Watch9, Galaxy S26 Ultra) create a genuine multi-device charging challenge that official Samsung accessories don’t fully solve — single-device chargers dominate the official lineup.

Elecdov C01S is the first third-party 3-in-1 with a watch zone specifically calibrated for Samsung WPC charging — not Apple Watch — making it compatible with Galaxy Watch Ultra2, Watch9, and all prior Galaxy Watch models.

Black Edition ships now from limited first-batch stock, color-matched to Galaxy Watch Ultra2’s Titanium Gray and Watch9’s Graphite. Other colors (White, Silver, Deep Blue) arrive early-to-mid September — no functional difference between variants.

The C01S Black Edition is the first Qi2-compatible 3-in-1 built for Samsung’s new ecosystem. Don’t wait for other colors — Black ships now.

Shop Elecdov C01S Black Edition — Ships Now →

Conclusion & Recommended Products

Conclusion: The Optimal Charging Solution for Samsung’s New Ecosystem

Samsung’s August 2026 launches — Galaxy Watch Ultra2 (47mm titanium, 800mAh, EN13319 dive-rated) and Galaxy Watch9 (Snapdragon Wear Elite, One UI 9 Watch) — alongside the Galaxy S26 Ultra (Qi2.2 25W), create Samsung’s most complex multi-device charging ecosystem to date. The Elecdov C01S is the first third-party 3-in-1 with a watch zone calibrated specifically for Samsung WPC charging protocols (not Apple Watch), FCC-certified, delivering 15W phone + 2.5W watch + 5W earbuds simultaneously across three independently thermally-managed zones.

The Black Edition ships first, perfectly coordinating with Galaxy Watch Ultra2’s Titanium Gray and Watch9’s Graphite finish. For users committed to the Qi2 Ecosystem and Charge Calm — a clutter-free, stress-free charging routine — the C01S Black Edition is the only choice that ships now. Other colors arrive early-to-mid September. No reason to wait.

Key Takeaways

Decision Point Right Spec Common Mistakes to Avoid
Galaxy Watch charging protocol Samsung WPC-specific charging stand; C01S watch zone calibrated for Samsung WPC protocol Using Apple Watch charger for Galaxy Watch, or generic Qi2 charger (Apple watch zone) — incompatible protocol causes charging failure
Galaxy S26 Ultra wireless fast charging Qi2 magnetic case + C01S 15W pad (recommended); or Samsung EP-P2900TBTGTW 25W single-device charger Using flat charger without magnetic case — misalignment reduces charging efficiency
Multi-device (3-in-1) charging FCC-certified 3-in-1 with independent coils; C01S has independent thermal management per zone Using three single-zone chargers — three outlets, tangled cables, fragmented thermal management
C01S purchase timing & color Black Edition ships now, color-matched to Samsung Titanium Gray / Graphite; same $32.99 price Waiting for September colors — misses limited first-batch stock and loses color coordination advantage

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Elecdov-C01-Bedroom_Nighttime_Sleep

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EC

Elecdov Engineering Team

Elecdov’s technical writing team covers wireless charging technology, Qi/WPC standards, and Samsung ecosystem accessories. All product specifications are verified against official WPC, FCC, and manufacturer data. For press inquiries, contact press@elecdov.com

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