Reserve Strap
Reserve Strap is a private consumer hardware company that designed and sold a battery strap accessory for Apple Watch, providing over 30 hours of additional battery life by charging through the watch's hidden diagnostic port. The product was sold direct-to-consumer online to individual Apple Watch owners.
- Company typePrivate
- Founded2015
- HeadquartersAustin, United States
- Headcount—
- GTM typeB2C
- OfferingHardware or Manufacturing
What Reserve Strap does
Reserve Strap is a private, Austin-based consumer hardware company founded in 2015 that designed and sold a single product: a battery strap accessory for Apple Watch. The strap integrated an external battery pack into a watch band form factor and was one of the first accessories to charge the Apple Watch through its hidden diagnostic port rather than via Apple's magnetic inductive charging solution. The company claimed the final product delivered more than 30 hours of additional Apple Watch battery life, equivalent to roughly 2.7x the built-in battery, reducing required charging frequency from daily to every 3–7 days depending on usage. The product was offered in three colors and both 38mm and 42mm Apple Watch sizes, with water resistance matching the Apple Watch itself.
The business model was direct-to-consumer hardware sales with no recurring revenue component. Distribution ran through the company's own e-commerce storefront and third-party online retailers serving global markets, with awareness driven primarily by earned media in third-party technology publications. Target customers were individual Apple Watch owners dissatisfied with the device's daily charging requirement, including fitness users and travelers needing multi-day battery endurance. Pricing was not publicly disclosed in the available data.
The company's strategic position was structurally fragile: it depended entirely on a single platform vendor (Apple) and a specific hardware surface (the hidden diagnostic port). Apple subsequently disabled that port in a watchOS update, eliminating Reserve Strap's primary technical differentiation. No funding rounds, management team, headcount data, partnerships, or follow-on product launches are documented in the available inputs, and there are no signals of a pivot or continued active operations.
Reserve Strap firmographics
Firmographics- Name
- Reserve Strap
- Website
- https://reservestrap.com
- Company type
- Private
- Founded year
- 2015
- Operating status
- Operating
- Short description
- Reserve Strap is a private consumer hardware company that designed and sold a battery strap accessory for Apple Watch, providing over 30 hours of additional battery life by charging through the watch's hidden diagnostic port. The product was sold direct-to-consumer online to individual Apple Watch owners.
- Ownership category
- akta.pro rank
Reserve Strap industry classification
Industry- Product category
- Consumer Electronics Accessories
- NAICS
- Battery Manufacturing (33591)
- SIC
- Electronic Components & Accessories (3670)
- akta.pro primary industry
- Batteries & Battery Packs (Rechargeable/Primary, Device-Specific Packs) (CRACATAG)
- akta.pro secondary industry
- Mobile Device Accessories (Cases, Screen Protectors, Mounts) (CRACALAH)
Keywords
Where Reserve Strap is headquartered
LocationHeadquarters
- HQ city
- Austin
- HQ country
- United States
- HQ region
- North America
Markets served
Reserve Strap business model
Business model- GTM type
- B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Marketing or Sales, Technology or R&D, Personnel
Revenue model
- Hardware Sales: Reserve Strap generated revenue through the sale of physical battery strap accessories for Apple Watch. The product was sold as a one-time purchase hardware device with no recurring subscription component.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels1 record
Reserve Strap product offering
Product offeringCore offering
Reserve Strap designs and sells a single hardware product — a wearable battery strap accessory for the Apple Watch that delivers 30+ hours of additional battery life by tapping into the watch's hidden diagnostic port via an integrated battery pack. It is sold as a one-time-purchase consumer electronics accessory available in multiple colors and sizes for different Apple Watch models.
Product overview
Reserve Strap is a single-product company offering a battery strap accessory for Apple Watch. The product functions as an external battery pack integrated into a watch band form factor, providing extended battery life for Apple Watch users who find the device's standard daily charging requirement inconvenient. The Reserve Strap connects to Apple's hidden diagnostic port on the Apple Watch (rather than using Apple's standard magnetic inductive charging) to enable faster charging and to avoid interference with the watch's sensors. The company announced the final product would deliver more than 30 hours of additional usage, equivalent to 2.7 times or 167% of the built-in Apple Watch battery. The strap is available in three colors (white, gray, and black) for both 38mm and 42mm Apple Watch models, with equal battery life specifications across sizes. The product is water resistant to the same degree as the Apple Watch itself.
Differentiator
Problem solved
Functional benefit
Products and services
- Reserve Strap (Apple Watch Battery Strap)
Companies that use Reserve Strap
Customer profileSegments1 record
Ideal customer profiles1 record
Reserve Strap technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Reserve Strap partnerships and signals
Strategic signalScale indicators1 record
Recent moves4 records
Expansion highlights1 record
Reserve Strap competitors and assessment
Company assessmentDirect peers
- Otterbox: Otterbox is a leading mobile device accessories maker (cases, chargers, power) with a dedicated Apple Watch accessories line. Operates the same DTC + retail model for Apple ecosystem power and protection accessories.
- Spigen: Spigen is a consumer mobile accessories brand producing cases, bands, and charging accessories, including Apple Watch straps (Rugged Armour referenced in source). Comparable direct-to-consumer Apple Watch accessories competitor.
- Twelve South: Twelve South specializes in Apple-focused accessories including charging stands and Watch docks. Comparable boutique accessory brand serving the same Apple Watch consumer persona as Reserve Strap.
- Belkin: Belkin is a major accessories manufacturer with an extensive Apple Watch charging and power lineup (BoostCharge, Valet chargers). Directly competes in the same Apple Watch charging accessory category as Reserve Strap with deeper retail distribution.
- Nomad Goods: Nomad designs premium Apple Watch straps, charging accessories, and power solutions marketed to the Apple ecosystem enthusiast. Competes in the same premium Apple Watch band/accessory niche with similar DTC distribution.
- Casetify: Casetify is a digital-native mobile accessories brand with bands, cases, and chargers - including Apple Watch bands. Comparable DTC-first, design-led accessories business with overlapping customer persona.
- Mophie: Mophie pioneered consumer battery cases and power packs for mobile devices, including iPhone battery cases and portable power solutions. Directly comparable to Reserve Strap as a third-party battery/charging accessory brand targeting Apple ecosystem users seeking extended device runtime.
- Anker: Anker is a global leader in consumer charging accessories - power banks, wireless chargers, and portable batteries - including products targeting Apple Watch. Comparable business model of selling high-capacity battery accessories direct-to-consumer at scale.
Broad incumbents
- Logitech (Logi): Logitech's Logi brand is a broad incumbent in computing and mobile accessories (mice, keyboards, webcams, charging). While not specialized in Apple Watch power, it offers overlapping peripheral/accessory capabilities backed by a much larger balance sheet.
- Apple (MagSafe / Watch charging portfolio): Apple is the platform owner and primary competitor for Apple Watch charging accessories via its MagSafe Duo, Apple Watch magnetic chargers, and first-party battery programs. Defines the MFi accessory ecosystem in which Reserve Strap operates.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat2 records
Key risks5 records
Key highlights6 records
Customer concentration
Reserve Strap social profiles
Digital presenceReserve Strap financial estimates
Financial estimateRevenue estimate
Valuation estimate
Reserve Strap leadership team
Management profileNumber of profiles
Reserve Strap funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Reserve Strap M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Reserve Strap
What does Reserve Strap do?
Reserve Strap designs and sells a single hardware product — a wearable battery strap accessory for the Apple Watch that delivers 30+ hours of additional battery life by tapping into the watch's hidden diagnostic port via an integrated battery pack. It is sold as a one-time-purchase consumer electronics accessory available in multiple colors and sizes for different Apple Watch models.
Is Reserve Strap a public or private company?
Reserve Strap is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Reserve Strap founded?
Reserve Strap was founded in 2015.
Where is Reserve Strap based?
Reserve Strap is headquartered in Austin, United States, in the North America region.
How does Reserve Strap make money?
One revenue line is on record: hardware Sales.
Who are Reserve Strap's main competitors?
Direct peers on record are Otterbox, Spigen, Twelve South, Belkin, Nomad Goods, Casetify, Mophie and Anker. Broad incumbents are Logitech (Logi) and Apple (MagSafe / Watch charging portfolio).
Does Reserve Strap have an API?
No public API is recorded for Reserve Strap.
What industry is Reserve Strap in?
Reserve Strap's product category is Consumer Electronics Accessories. Its primary akta.pro industry code is CRACATAG, Batteries & Battery Packs (Rechargeable/Primary, Device-Specific Packs), with a secondary code of CRACALAH, Mobile Device Accessories (Cases, Screen Protectors, Mounts). Its NAICS code is 33591 and its SIC code is 3670.