Oztech Core Power Bank S Debuts as a Lightweight 78-Gram Portable Charger for iPhone and Apple Watch
The Oztech Core Power Bank S is aiming to stand out in the crowded portable charger market with a compact, travel-friendly design and enough battery capacity for everyday top-ups. Built with an ultralight carbon fiber-style focus and weighing just 78 grams, this waterproof power bank is designed for users who want backup power without carrying a bulky battery pack.
Despite its small size, the Power Bank S is claimed to offer practical charging performance for popular Apple devices. According to the campaign details, it should provide enough power to fully recharge an iPhone Air or an iPhone 16 Pro once. For larger devices, such as the iPhone 16 Pro Max, the battery pack is expected to charge the phone from 0% to around 72%.
Apple Watch users may find it especially useful for travel, as the Power Bank S can reportedly fully charge an Apple Watch Series 11 up to eleven times. That makes it a convenient option for weekends away, business trips, commuting, hiking, or emergency use.
The compact USB-C power bank supports charging speeds of up to 22.5 watts, which should be enough for quick and efficient charging of smartphones, earbuds, smartwatches, and other small gadgets. One of its more interesting features is a 5-watt low-power mode. This mode is designed to reduce operating temperatures and improve efficiency, with the company claiming it can deliver up to 35% more usable energy in certain situations.
That low-power mode could be particularly useful when charging smaller accessories or when heat management matters, such as during long charging sessions or warm outdoor conditions. For users who prioritize battery efficiency over speed, it adds flexibility that many standard compact power banks do not offer.
The Oztech Core Power Bank S is currently available through a Kickstarter crowdfunding campaign. Early backers can reserve the charger through the “Super Early Bird” offer for $32, while the expected retail price is set at $49. The package includes an ultralight short USB-C cable, making it ready for use with compatible devices.
Shipping is currently expected to begin in November 2026. Buyers should note that the listed campaign price does not include shipping, which is expected to cost between $5 and $7. Import duties or local taxes may also apply depending on the buyer’s location.
For anyone looking for a lightweight waterproof power bank for iPhone, Apple Watch, and USB-C accessories, the Oztech Core Power Bank S could be a promising option. Its combination of compact weight, 22.5W charging, low-power efficiency mode, and travel-focused design makes it an interesting portable charger to watch as it moves through crowdfunding.
