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The Power Behind Weeks of Uninterrupted Reading
Hanery is a leading B2B manufacturer of ultra-thin, lightweight, and low self-discharge polymer lithium-ion batteries for e-readers, e-ink tablets, and digital notepads. We engineer custom power solutions that deliver the exceptional standby performance and reliability required for a truly immersive and long-lasting reading experience.
Safety
Low Self-Discharge
Long Lifespan
Lightweight
Your Expert E-Reader Battery Manufacturer in China
In the e-reader market, battery life isn’t measured in hours, but in weeks. Partner with a manufacturer that delivers exceptional endurance.
Ultra-Low Self-Discharge
Our specialized chemistry minimizes passive power loss, ensuring the device is ready to use even after weeks of inactivity.
Ultra-Thin & Lightweight
We manufacture extremely thin cells that enable sleek, comfortable, and feather-light e-reader designs.
High Energy Density
We maximize mAh capacity within a minimal profile, providing the longest possible reading time per charge.
Custom Shapes & Sizes
We create custom-shaped batteries to perfectly fit the unique internal layout of your e-reader.
High Cycle Life & Durability
Built to withstand thousands of page turns and years of recharging.
Mass Production Consistency
Our automated facilities ensure every battery delivers the same reliable, long-lasting performance.

Custom E-Reader Batteries as Your B2B Supplier
Hanery is your specialist partner for custom 3.7V polymer batteries, meticulously engineered for the unique demands of e-ink devices. We understand that the ultimate feature of an e-reader is the ability to forget about the battery. Our expertise lies in creating highly stable, low self-discharge cells that hold their charge for an exceptionally long time, providing the seamless, “always-ready” experience that readers love.
Wholesale E-Reader Battery Capabilities
We provide custom power solutions for all categories of e-ink and digital paper devices.

Kindle Batteries

Kobo Batteries

Barnes & Noble Nook Batteries

reMarkable Batteries
Want to Advertise "Weeks, Not Hours" of Battery Life?
Our ultra-low self-discharge technology is the key to delivering exceptional standby performance.
Customized Options for Your E-Reader Batteries
We engineer every detail for a distraction-free reading experience.
Low Self-Discharge Chemistry
We use a specialized, highly stable electrolyte formulation to minimize passive energy loss over time.
Ultra-Thin Profile
We can manufacture cells with a thickness of less than 2.5mm, enabling incredibly sleek device designs.
Custom Footprints
We design batteries in various rectangular or custom shapes to maximize the use of internal space.
Optimized Capacity
We engineer the cell to provide the ideal balance of capacity, weight, and thickness for your target user experience.
Intelligent Protection Circuit (PCM)
We integrate a low-power-consumption PCM to ensure safety without draining the battery during standby.
Full OEM Integration
We provide custom connectors, labeling, and packaging for seamless integration into your production process.
Get Your Batteries in Bulk, Step-by-Step
In-Depth Consultation
We analyze your e-reader's design, power consumption profile (active vs. standby), and target battery life.
Engineering & Proposal
We provide a comprehensive proposal with detailed specifications and a transparent wholesale quote.
Prototyping & Standby Testing
We produce functional samples for you to validate for fit, performance, and long-term self-discharge.
Refinement & Certification
We refine the design based on your testing and manage all required global safety certifications.
High-Volume Mass Production
Your bulk order is manufactured with exceptional consistency in our advanced facility.
Global Logistics & Compliant Shipping
We manage the entire logistics process, ensuring your batteries are shipped safely and on schedule worldwide.
FAQ for E-Reader Batteries
A: The key is our ultra-low self-discharge chemistry. While the e-ink screen itself is very efficient, minimizing the battery’s own passive power drain over weeks is what truly enables exceptional standby time.
A: We can produce cells well under 3.0mm, with some designs approaching 2.0mm, depending on the required capacity. This is critical for creating thin and light devices that are comfortable to hold.
A: For a new custom design, our MOQ typically starts at 20,000 to 50,000 units.
A: E-readers generally have lower power demands than, say, a smartphone. We typically integrate a simpler, highly efficient Protection Circuit Module (PCM) that provides all necessary safety features with minimal power consumption.
A: E-reader batteries are designed for longevity, typically specified to retain high capacity after 500+ charge cycles, which translates to many years of use for the average reader.
A: After the design is finalized, the lead time for the first batch of prototypes is generally 4-6 weeks.
A: Self-discharge is temperature-dependent. Our cells are optimized to perform well at room temperature. Storing the device in very hot conditions can increase the self-discharge rate, which is a normal characteristic of lithium-ion chemistry.
A: Yes, we can create custom footprints to maximize the use of all available internal space, helping you increase capacity without compromising your industrial design.
A: Absolutely. We manage the entire certification process (UN38.3, IEC, CE, UL, etc.) to ensure your e-reader can be sold in your target markets worldwide.
A: Please provide the target dimensions (T x W x L), required minimum capacity (mAh), voltage (3.7V), and your estimated annual volume.