702030 3.7v 400mAh 1.48wh Rechargeable Lithium Li-polymer Battery Cell For Bluetooth Speaker

Product Description

702030 3.7v 400mAh 1.48wh Rechargeable Lithium Li-polymer Battery Cell For Bluetooth Speaker

Good performance in bluetooth speaker:

Outstanding Battery Life:
The 400mAh battery capacity is a high specification for Bluetooth earbuds, enabling longer periods of continuous use compared to traditional lithium-ion batteries (typically 200-300mAh). For example, users have observed full-day battery life during commuting and meetings, and multiple days of use on a single charge.

Size and Weight Control:

The polymer battery utilizes a soft-pack design, making it more compact and lightweight (approximately 9.1g per unit), making it easier to carry. This feature is particularly important in true wireless earbuds, as it prevents excessive battery size from compromising wearing comfort.

Safety and Lifespan:

Polymer batteries are leak-proof and non-polluting, offering enhanced safety. Furthermore, they offer a cycle life of hundreds of times (depending on the product), reducing the need for frequent charging.

Main Application:

Bluetooth headsets:

Used as a charging case battery.

Smart bracelets/watches:

Suitable for smart wearable devices. Some models use this battery for daily use.

Small electronic devices:

Includes drone accessories, locators, disinfection boxes, and other applications where size and weight are critical.

Product Pictures:

Shenzhen Resky Electronics Co., Ltd is a company specialized in manufacturing, sales and marketing of rechargeable lithium battery and related battery packs.

Our lithium battery cells and packs products are widely used in portable mobile devices such as Bluetooth headsets, MP3 players, PDAs, Digital camcorders, Mining lamps, medical device, GPS, RC Models and electric vehicle such as electric bike, electric scooter, and solar energy storage system.

Vision:

To be an international premier innovative technology corporation, rooted in the Chinese culture, excelling in the global green energy industry. International standard production workshop, advanced manufacturing equipment, precise testing instruments, automatic lithium battery with set of machines, all computer monitoring intelligent aging equipment, bringing together the industry's most excellent product development and management team to ensure that provide customers with qualified quality of lithium battery products.

Mission:

Aims to be a premier solution provider for high quality, efficient, safe, environmental power. We are experienced R&D team focus on the latest development and application in every field of lithium-ion batteries, dedicated and professional spirit of enterprise continuously for customers to develop the most advanced, the safest, most stable lithium battery application solutions, world-class lithium electric OEM/ODM enterprise as the goal, with science and technology into low carbon and green life.

Battery cell:

Welding battery with PCM:

Insulation:​

Battery pack assembled with PCM + connector:

Wrapping pvc:​

Voltage measurement:

Printing logo:

Package: