Custom rechargeable lithium polymer battery packs for TWS earbuds charging cases, wireless earphones and Bluetooth audio devices. We support 3.7V / 3.85V and 100–600mAh configurations with custom voltage, capacity, dimensions, connector, wire, label and packaging options. Application references include Apple AirPods, Samsung Galaxy Buds, Sony WF series, Bose QuietComfort, JBL Tune/Live and Jabra Elite. OEM/ODM, sample development and mass production are available.
Brand Name :
OEMBattery Type :
Li-polymerNominal Voltage :
3.7V / 3.85V, CustomNominal Capacity :
3.7V / 3.85V, CustomCell Options :
CustomApplication :
Wireless Earbuds Charging Case, TWS Bluetooth EarphonesCompatible Brands :
Custom, Compatible with Various BrandsCompatible Models :
Customized ModelsCertification :
CE / RoHS / UN38.3 / MSDS / Regulation (EU) 2023/1542 CompliantCUSTOM BATTERY SOLUTIONS FOR TWS EARBUDS CHARGING CASE
We specialize in custom lithium battery packs for wireless earbuds charging cases, offering flexible specifications, stable quality and OEM/ODM service.
Custom Specifications
Voltage / Capacity / Size
Custom Connector
Wire length / Plug type
Safe & Reliable
Over-charge / Over-discharge / Over-current / Short circuit protection
OEM/ODM Factory Direct
Sample order / Fast sample service
Compact & Lightweight
Fits perfectly in small devices
Compatible with Popular Brands
Your Custom Battery Partner
TWS Earbuds Charging Case | Bluetooth Earbuds | Headphones | Bluetooth Speaker | Smart Speaker
From your initial requirements to sample evaluation and production planning.
Project timing and production arrangements depend on the confirmed specifications, sample approval and order requirements.
Meet our team at industry exhibitions to discuss custom battery packs, application requirements and OEM/ODM cooperation.
Explore our manufacturing capabilities, available compliance documentation and battery development experience across different applications.
Documentation may be available according to the battery model, destination market and project requirements. Please confirm the applicable documents for your specific product.
Note: Displayed documents are examples of available compliance or test documentation. Applicability and validity depend on the specific battery, configuration, market and project. Please request the relevant documents for your order.
Examples of battery solutions developed for different equipment and application requirements.
Our battery development experience covers a wide range of equipment categories and specialized applications.
Our team supports custom battery projects with technical communication, product evaluation and after-sales coordination.
Warranty coverage, duration and remedies are subject to the applicable quotation, order terms and product specifications. If an issue occurs, please provide the order details and relevant photos or test information so our team can assess the case and advise on the next steps.
Our team can help coordinate technical questions related to battery specifications, connectors, wiring, charging requirements and product application. Response times depend on the inquiry, project details and support arrangements.
For suspected quality issues or products that do not meet the agreed specifications, contact us with the order number and supporting details. Return, repair or replacement arrangements will be reviewed according to the confirmed order terms and the assessment results.
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