Apple Watch Ultra (2022) Battery A2749 | 3.86V 542mAh 49mm Titanium — EN 13319 Dive-Rated, Dual-Frequency GPS
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✅ Fits Apple Watch Ultra 1st Gen (2022, 49mm titanium) — P/N A2749 (542mAh / 3.86V); covers A2684 (GPS + Cellular Global), A2685 (GPS + Cellular US), A2886 (GPS + Cellular China)
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✅ 542mAh — EN 13319 dive standard (100m), L1+L5 dual-frequency GPS, 86dB siren, and 60-hour Low Power Mode runtime all supported at rated capacity
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✅ ±0.1mm tolerance for titanium enclosure fitment; Action Button flex cable routing verified; 100m water resistance re-seal required post-repair
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✅ Factory direct — distinct from Ultra 2 (A2956, 564mAh); custom labeling from 200 pcs; 12-month warranty
Descrição do produto
When Apple launched the Watch Ultra in September 2022, it was entering territory no Apple Watch had occupied before — a device built for open-water diving, high-altitude trail running, and endurance events, rated to EN 13319 dive standards at 100m. The Ultra wasn’t an incremental upgrade to the standard Watch lineup; it was a new product category built around a 49mm titanium case, a flat sapphire front crystal, an 86dB emergency siren, L1+L5 dual-frequency GPS, and a 542mAh battery that delivered 60 hours of runtime in Low Power Mode.
That battery — P/N A2749, rated at 542mAh / 3.86V — is specific to the 2022 Ultra. The 2023 Ultra 2 uses A2956 at 564mAh. Same voltage, different capacity, different P/N, different physical dimensions. Units from the 2022 launch are now approaching the 3-year mark — early adopters in the outdoor sports and dive community tend to be heavy users, which means high cycle counts and battery wear happening faster than the typical Watch owner.
Modelos compatíveis verificados:
| Dispositivo | Apple Model IDs | Número de peça da bateria | Capacidade |
|---|---|---|---|
| Apple Watch Ultra (2022) | A2684 (GPS + Cellular Global) | A2749 | 542mAh |
| Apple Watch Ultra (2022) | A2685 (GPS + Cellular US) | A2749 | 542mAh |
| Apple Watch Ultra (2022) | A2886 (GPS + Cellular China) | A2749 | 542mAh |
⚠️ Not compatible with Apple Watch Ultra 2 (2023, A2986/A2987/A2988) — that model uses A2956 at 564mAh. Case dimensions look identical but internal battery dimensions differ. Always verify the Watch generation engraved on the back housing before ordering.
Parâmetros técnicos
| Parâmetro | Especificação |
|---|---|
| Número de peça da bateria | A2749 |
| Modelos compatíveis | A2684 / A2685 / A2886 (Apple Watch Ultra 2022) |
| Case Size / Material | 49mm titanium |
| Tensão Nominal | 3.86V |
| Capacidade | 542mAh |
| Tipo de célula | Li-ion Polymer soft-pack (Grade A) |
| Dimensional Tolerance | ±0.1mm (100m water resistance re-seal dependent) |
| PCM Spec | 3.86V — NOT interchangeable with Ultra 2 (A2956, 564mAh) |
| Charge Voltage (Max) | 4.35V ± 0.05V |
| Discharge Cut-off | 2,75V |
| GPS | L1+L5 dual-frequency — rated for continuous outdoor tracking load |
| Water Resistance (Device) | 100m / EN 13319 dive standard — requires re-seal post-repair |
| Published Runtime | 60 hours (Low Power Mode) / 36 hours (standard) / 12 hours (GPS workout) |
| Feature Compatibility | Action Button, AOD, SpO2, ECG, depth gauge, 86dB siren, Compass |
| Ciclo de vida | ≥ 600 cycles @ 80% DOD |
| Temperatura de operação | 0°C ~ 45°C (charge) / -20°C ~ 60°C (discharge) |
| Tipo de conector | OEM-compatible flex connector |
| Protection (PCM) | Overcharge / over-discharge / short circuit / over-current |
| Certificações | CE, FCC, RoHS, UN38.3; MSDS/SDS on request |
| OEM/ODM | Custom label / packaging from 200 pcs |
| Doença | Brand new, 0 cycle, 100% capacity-tested |
| Garantia | 12 months from shipment date |
| Lead Time (Stock) | 3–5 business days |
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Características e vantagens
✅ 🏔️ Built for High-Drain Use Cases — 542mAh Rated for L1+L5 GPS and Siren Load
The Ultra’s target users — trail runners, mountaineers, divers — generate significantly higher battery drain per day than a standard Watch user. L1+L5 dual-frequency GPS runs continuously during outdoor workouts; the 86dB siren draws peak current in emergencies. The A2749 cell is rated for these high-drain profiles. A sub-grade replacement cell that meets capacity on paper but has elevated internal resistance will show premature GPS dropout and reduced siren output under simultaneous load — failure modes that matter in the field, not just on a spec sheet.
✅ 🤿 EN 13319 Dive Rating — 100m Water Resistance Seal Demands Dimensional Precision
The 100m dive rating is not just marketing — it’s a functional spec that the Ultra’s target users rely on. Opening the Watch for battery replacement breaks the original water resistance seal. Restoring 100m rating post-repair requires correct cell dimensions (±0.1mm) so the housing re-seats fully, plus professional re-application of the adhesive gasket. An oversized cell that prevents full enclosure closure makes the 100m re-certification impossible regardless of gasket quality. Dimensional accuracy on A2749 cells is a prerequisite for post-repair dive use, not an optional quality detail.
✅ 🔘 Action Button — First Generation, Flex Cable Routing Note
The Ultra (2022) introduced the Action Button — a programmable button on the left side of the case that routes its flex cable near the battery compartment. The cable must be repositioned during battery installation without stretching or kinking. This is a technician procedure variable, not a battery spec variable, but it’s worth flagging for distributors advising repair shops: Action Button non-response post-replacement is almost always a cable seating issue, not a battery defect.
✅ 🏭 Low-Volume, High-Value SKU — OEM Options for Premium Repair Channels
The Ultra (2022) repair segment is smaller in unit volume than standard Watch series, but the device retails at $799 and the target user base skews toward high-income outdoor enthusiasts who prioritize repair over replacement. Per-repair revenue is higher, and supplier competition on A2749 is materially thinner than on S8/S9. Apple Watch Ultra battery replacement custom labeling and retail packaging from 200 pcs. For distributors serving specialist outdoor gear repair or premium Apple service channels, A2749 is a margin-positive catalog addition.
Embalagem e entrega
Prazo de entrega e envio
Produtos em estoque: Envio em até 3 dias
Para modelos de substituição padrão com estoque disponível.Encomendas de produção em massa: Envio em até 7 dias.
Para modelos regulares, de acordo com as especificações e requisitos de embalagem confirmados.Encomendas personalizadas: Envio em até 15 dias.
Para configuração personalizada de células, tamanho, fios/conectores, PCB/BMS, etiquetagem ou embalagem.
Observação: O tempo final de despacho depende de quantidade total, complexidade do modelo, requisitos de embalagem e documentos de conformidade de envio. Confirmaremos a data estimada de envio (ETD) após a confirmação do pedido.
Frete aéreo (urgente, volume menor)
Frete marítimo (custo-benefício para grandes volumes)
Ferrovia / Rodovia (dependendo do destino)
Canais expressos
Documentos disponíveis: UN38.3 / FISPQ / Relatório de Teste de Transporte (se aplicável)
A embalagem e a rotulagem das caixas de acordo com as normas podem ser providenciadas com base no método de envio escolhido.
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Perguntas frequentes
Q1: Is the Apple Watch Ultra (2022) battery the same as Ultra 2 (2023)?
A: No. The 2022 Ultra uses A2749 at 542mAh. The 2023 Ultra 2 uses A2956 at 564mAh. Both run at 3.86V but have different physical dimensions and P/Ns — they are not interchangeable. The cases look identical from the outside, which makes this a common ordering mistake. Always verify the Watch generation from the back housing inscription, not just the case appearance.
Q2: After battery replacement, can the Watch Ultra still be used for diving to 100m?
A: The 100m EN 13319 rating requires the enclosure to be fully sealed. Opening the Watch for battery replacement breaks the original seal. To restore dive-rated water resistance after repair, two conditions must be met: the replacement cell must be within ±0.1mm dimensional tolerance so the housing closes completely, and the adhesive gasket must be professionally re-applied. A cell even slightly over spec prevents full closure — no amount of gasket work compensates for an enclosure that cannot fully seat. Post-repair pressure testing is the only way to verify the rating has been restored.
Q3: The Ultra’s target users are heavy users — how many charge cycles do early units have by now?
A: The Ultra launched September 2022, making early units roughly 2.5 years old. A trail runner or triathlete charging daily — and some Ultra users charge twice daily after long training sessions — can accumulate 900–1,200+ equivalent cycles in that timeframe. Apple’s 80% capacity threshold is typically reached around 600 full-equivalent cycles. Many Ultra units in active outdoor use are now operating on batteries that have lost 20–30% of original capacity, which is particularly noticeable in the extended Low Power Mode runtime that outdoor users rely on.
Q4: Does L1+L5 dual-frequency GPS still work at full accuracy after battery replacement?
A: Yes — when the battery delivers stable output under continuous GPS load. L1+L5 dual-frequency GPS locks faster and maintains accuracy in urban canyons and heavy tree cover compared to L1-only GPS, but it draws more sustained current. A high internal resistance cell causes voltage sag during continuous GPS tracking, producing periodic signal dropout and reduced fix accuracy over long routes. This is the failure mode that matters most for the Ultra’s use case. Grade-A low-internal-resistance cells handle the sustained GPS draw without sag.
Q5: What is the Action Button, and does battery replacement affect it?
A: The Action Button is a programmable physical button on the left side of the Ultra case, introduced with the first generation. Its flex cable routes adjacent to the battery compartment. The button itself doesn’t interface with the battery electrically — it communicates directly with the S8 chip. However, the cable must be carefully repositioned during battery installation. Action Button non-response after battery replacement is almost always a cable seating issue from the repair procedure, not a battery defect. Distributors advising repair shops on this SKU should flag this as the primary post-repair callback risk.
Q6: How does A2749 differ from standard S8 batteries, and can repair shops use the same tooling?
A: The S8 batteries (A2961/A2810) use aluminum cases with 50m water resistance. A2749 goes into a titanium case with 100m dive rating. The core tooling — heat pad, plastic picks, suction handle — is the same. The differences are procedural: titanium requires more careful heat application (it conducts heat differently than aluminum), the 100m gasket re-seal is more involved than the standard Watch procedure, and the Action Button cable management adds a step not present in S8 repair. Shops experienced with standard Watch battery replacement can do Ultra work but should treat it as a more demanding job, not a direct equivalent.
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