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.
