For now, the vivo S2 FE is the only one of these two phones with specifications confirmed by its manufacturer in the information available as of October 7, 2026. vivo lists a 10,000mAh typical battery (9,800mAh rated) and 44W charging. POCO/Xiaomi confirmation for a phone called the POCO X8 Power was not located, so its reported specifications and price are not a sound basis for a buying decision.
What can you compare with confidence?
The vivo figures below come from vivo India’s specifications and October 6, 2026 launch announcement. The POCO X8 Power figures come from a 91mobiles report dated October 6, 2026; they were not verified against an official POCO or Xiaomi source. Treat them as reported claims, not confirmed product specifications.
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| Detail | vivo S2 FE | POCO X8 Power |
|---|---|---|
| Battery | 10,000mAh typical; 9,800mAh rated, according to vivo India | 10,000mAh, reported by 91mobiles; not officially confirmed here |
| Charging | 44W, according to vivo India | 100W, reported by 91mobiles; not officially confirmed here |
| India price | Launch-announced prices: INR 38,999 for 6GB/128GB and INR 42,999 for 8GB/128GB, according to vivo India | Starting at INR 35,999, reported by 91mobiles; not officially confirmed here |
| Chipset | Dimensity 7300e, according to vivo India | Snapdragon 6 Gen 5, reported by 91mobiles; not officially confirmed here |
| Display | 6.83-inch AMOLED, 2800 × 1260 resolution, up to 120Hz, according to vivo India | 6.83-inch AMOLED, reported by 91mobiles; resolution and refresh rate are not established by the cited report details here |
| Rear cameras | 50MP main and 2MP bokeh, according to vivo India | 50MP main and 8MP ultrawide, reported by 91mobiles; not officially confirmed here |
The table is not a confirmed product-to-product comparison: only the vivo column is manufacturer-confirmed in these sources. In particular, a reported 100W charging figure or lower reported starting price does not establish what a retail POCO X8 Power will offer.
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vivo India announced that sales would begin October 20, 2026, through partner retail stores, vivo’s official website, Flipkart and Amazon India. That date was still in the future on October 7, 2026, so check current listings and stock before relying on it. The announced prices are launch prices, not a guarantee of what a retailer currently charges.
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The two listed configurations both have 128GB storage: 6GB RAM at INR 38,999, or 8GB RAM at INR 42,999. The manufacturer’s product details also list a 32MP front camera.
Why the 10,000mAh label does not settle battery life
For the S2 FE, vivo distinguishes the battery’s 10,000mAh typical capacity from its 9,800mAh rated capacity. Capacity alone does not show how long a phone lasts: actual runtime depends on factors such as workload, display settings, network conditions and software. No independent matched battery-life test comparing these two models is established here.
vivo’s runtime and longevity claims
vivo says the S2 FE achieved 30 hours of binge-watching in a single-app laboratory test at 25°C ±2°C, using Wi-Fi, 150-nit brightness and 63dB volume. That is a manufacturer test result under specified conditions, not a promise of 30 hours for every user or a comparative test against the POCO.
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vivo also says the battery is designed to retain at least 80% capacity after 1,400 full cycles. The company bases this on laboratory simulation at 23°C ±2°C; it describes its simulated pattern of 1.83 days per charge/discharge as equivalent to about seven years. This is vivo’s laboratory claim, not an independent long-term test.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Do not confuse the POCO X8 Power with the regular POCO X8
The official Xiaomi Singapore page found for the regular POCO X8 lists an 8,340mAh battery, 67W HyperCharge, a 6.83-inch 1.5K AMOLED display at 120Hz, a Snapdragon 6s Gen 4 chipset and a 50MP main camera with OIS. Those specifications describe that regular POCO X8 page; they do not confirm or disprove a separately named X8 Power in another market. Do not use them as the Power model’s specifications.
Which one should you consider?
- Consider the vivo S2 FE if you want to evaluate a model with manufacturer-listed India specifications, two 128GB configurations and an announced local sale channel. Its listed charging rate is 44W; consider whether that suits your priorities.
- Wait before choosing the POCO X8 Power if your decision depends on its reported 10,000mAh battery, 100W charging, chipset, cameras or price. Seek an official POCO/Xiaomi product page or announcement and confirm the exact India configuration and availability.
- Do not decide on battery capacity alone. For a meaningful head-to-head, look for independently tested endurance under comparable conditions, plus confirmed charging times, retail prices, dimensions and software-update terms.
vivo’s announcement also says the S2 FE supports 6W reverse charging over Type-C, subject to compatibility caveats. Its Guinness World Records claim is not a battery-runtime result: vivo’s release attributes the 32 hours 37 minutes electronic-product testing livestream record to the vivo V80 Lite 5G in Chiang Mai, Thailand, on August 11, 2026, marketed as S2 FE in India.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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