TWS earphones are a very popular earphone product in recent years. They can be connected immediately after opening the cover, taken out and used, and are easy to store. They get rid of the shackles of wired earphones that are difficult to store and easily tangled. Popular with users, it has replaced traditional wired headphones to a large extent. The reason why TWS earphones can be used so conveniently is that the earphone battery is the most important part.
The Apple Airpods series is currently responsible for sales in the TWS headset market, and it leads the development of the market in terms of appearance design and structural configuration. In terms of batteries, Apple AirPods 1 and 2 both used steel-cased pin-type batteries, but AirPods Pro replaced them with steel-cased button batteries. This change also caused brand manufacturers on the market to quickly follow up.
I Love Audio Network follows the development of the TWS headset market and has made detailed disassembly reports on nearly 300 products in the past few years. It is found that many brands have also adopted steel shell button batteries as Power source of own TWS earphones. This time I will give you a detailed analysis of the advantages and product use cases of steel case button batteries in TWS earphones~
1. What batteries are needed for TWS earphones?
TWS earphones are mainly composed of two parts: charging box and earphones. The charging box plays the role of storing, protecting and charging the earphones. The charging box usually uses a soft-packed polymer battery with a smaller capacity. The overall size is small and easy to carry, so you can store the earphones anytime and anywhere. However, some headphones have larger charging boxes with built-in 18650 batteries, which can support mobile power functions.
Due to the wireless connection method of the earphones, batteries are required to power the internal devices in both earphones. The batteries inside the earphones are divided into soft-pack batteries and steel-shell batteries according to their types. Soft-pack batteries can be made into various shapes to fit the shape of the earphones; steel-shell batteries are divided into steel-shell needle-shaped and steel-shell button shapes according to the shape of the earphones. . Among them, steel-cased button batteries are widely used, while steel-cased pin batteries are only used in a few products.
2. Advantages of steel-cased button batteries
I Love Audio Network disassembled and analyzed hundreds of TWS earphones and found that more and more earphones use steel-cased button batteries. Power supply. We interviewed many battery experts in the industry and learned about the advantages and usage precautions of steel-cased button batteries as batteries for TWS earphones. We shared them with everyone for study and research.
Varta:
The advantages of steel-shell button batteries include: high battery capacity density; the round buttons fit the shape of the earphones, providing the largest possible battery in a compact space Capacity; the shell is hard and not easy to be damaged; it is easy to produce and assemble earphones; there is no bulging during charging and discharging, and the size of the earphones can be designed more accurately without leaving room for expansion.
Yiwei Lithium Energy:
The steel-shell bean battery has higher energy density, lower expansion rate and leakage rate, high dimensional consistency, high space utilization and Excellent features such as fast charging make the TWS headset assembly process simpler and more convenient, giving TWS headset consumers a safe, lightweight and long-lasting experience.
VDL Zijian:
The current TWS headphone products are mainly divided into two types: in-ear and semi-in-ear. In order to achieve a comfortable wearing experience, the appearance curve of the earphones mostly presents an irregular round shape similar to the auricle. Therefore, when the battery is placed inside, it needs to be adjusted according to the appearance in order to be able to carry a larger battery capacity.
Steel-shell button batteries have the advantages of regular round volume, resistance to deformation, small expansion space, and the ability to be directly attached to the PCB board, which effectively saves space and size, thereby providing a larger capacity battery. .
Microelectricity New Energy:
For manufacturers, steel shell button batteries have good size consistency and do not need to deliberately reserve expansion space.
During product assembly, the acoustic cavity can be distributed uniformly and centrally to ensure the consistency of FR and ANC curves, and the manufacturing yield is well guaranteed.
For consumers/users, headphone products with steel case button batteries will not expand during use, and product performance will not change over time.
From the above, we can understand that the biggest advantage of steel-shell button batteries is that they have good product consistency and will not have bulging problems during charge and discharge cycles. There is no need to reserve expansion space for the battery, so it can be set Larger battery capacity; the hard steel shell of the steel-shell button battery can realize automated assembly. It can also protect the battery very well during assembly, preventing the battery from being squeezed or scratched during assembly, affecting the health of the battery. Battery life.
Steel case button batteries have many advantages, but they also have a significant disadvantage, which is the use of steel cases with higher mechanical strength to replace aluminum-plastic film packaging. Compared with soft pack batteries, they are heavier and more expensive. high.
3. Summary of TWS earphones using steel case button batteries currently on the market
This time, I Love Audio Network has summarized 43 steel case button type models from 15 brands. There are 103 battery application cases, 43 products of different sizes, with capacities ranging from 30mAh to 108mAh. The product application cases cover most TWS headphone brands currently on the market.
Battery brands include Yiwei Lithium Energy, Jinshan Battery, Penghui Energy, LEBEI, Diande Electronics, Microelectronics, Microelectronics New Energy, Nanfu Chuanying, OMNI, Samsung, Sheneng, and Yan Jiu Electronics, Valta, Chongqing Zijian, Yanjiu Electronics, Zhili Battery. Let’s take a closer look at these brands and their product application cases.
EVE Lithium Energy
EVE Lithium Energy was founded in 2001. It is a national high-tech enterprise focusing on the innovative development of lithium batteries. After nearly nineteen years of hard work, the company's lithium sub-batteries have sold well all over the world, and lithium primary batteries occupy an important position in the domestic market. In the past three years, Yiwei Lithium Energy has focused on the power and energy storage markets, using highly automated and information-based production methods to provide customers with high-quality, high-reliability lithium battery products and services.
Application cases:
(01) Teardown report: Samsung Galaxy Buds true wireless Bluetooth headset
(02) Teardown report: UGREEN HiTune T1 True Wireless Bluetooth Headphones
(03) Teardown Report: ZMI PurPods True Wireless Bluetooth Headphones
(04) Teardown Report: ZMI PurPods Pro True Wireless Noise Reduction Headphones
(05) Teardown report: Libratone AIR 2nd generation true wireless noise-canceling headphones
(06) Teardown report: Haylou MoriPods true wireless Bluetooth headphones
(07) Teardown report: Hey W1 true wireless earphones
(08) Teardown report: Redmi AirDots3 Pro true wireless noise-cancelling earphones
GP Jinshan Battery
Shenzhen Jinshan Battery Co., Ltd. was established on November 5, 2007. It is a direct branch of Hong Kong Jinshan Battery International Co., Ltd. The company's main business projects include R&D, production and sales of lithium batteries, nickel-metal hydride battery combinations, disposable battery combinations, battery chargers (including batteries) and battery accessories, as well as the above-mentioned import and export business, and battery R&D technical services.
Application cases:
(01) Teardown report: ROWCING true wireless Bluetooth headset
GREATPOWER Penghui Energy
Guangzhou Penghui Energy mainly produces secondary rechargeable batteries such as polymer lithium ion, lithium ion, and nickel metal hydride, and primary batteries such as lithium iron, lithium manganese, lithium thionyl chloride, and zinc air. The products are widely used in mobile power supplies, model aircraft, and new energy vehicle power batteries. , automobile starting power supply, communication base station backup power supply, wind and solar energy storage and home energy storage battery system solutions, and is the first to achieve large-scale production, has independent intellectual property rights, and its main technical indicators are at the domestic and international advanced level. The company has been mass-producing lithium batteries since 2002 and is an established consumer lithium battery enterprise.
Application cases:
(01) Teardown report: Funcl AI true wireless Bluetooth headset
(02) Teardown report: JBL Free true wireless Bluetooth headphones
(03) Teardown report: JBL TUNE120 true wireless Bluetooth headphones
(04) Teardown report: 1More omthing AirFree true wireless Bluetooth headphones
LEBEI
Application cases:
(01) Teardown report: Klipsch x McLaren co-branded T5 II true wireless sports headphones
LIDEA Electronics
Dongguan Electric Electronics Co., Ltd. specializes in the research and development, production and sales of button batteries. The production workshop covers an area of ??more than 5,000 square meters and has advanced automated production lines and automatic testing equipment. The products use high-quality raw materials at home and abroad, organize production and conduct strict quality process control in strict accordance with ISO9001:2008 quality system standards, and continuously improve the quality assurance system. All technical indicators of the products have exceeded IEC international standards, and have a number of buttons New utility invention patent for battery.
The company currently produces two major environmentally friendly battery series: lithium-manganese dioxide disposable button batteries and lithium-ion rechargeable button batteries, which have been widely used in various advanced electronic and electrical consumer goods fields: Main boards, calculators, electronic dictionaries, electronic clocks, remote controls, anti-theft devices, electronic scales, rice cookers, LED shoe lights, active tags, electric toys, medical equipment and various instruments and meters, etc.
Application cases:
(01) Teardown report: HiBy WH3 true wireless Bluetooth headset
(02) Teardown report: iWALK true wireless Bluetooth headphones
(03) Teardown report: KUGOU X5 true wireless Bluetooth headphones
(04) Teardown report: Padmate PaMu Slide Mini true wireless Bluetooth headphones
(05) Teardown report: Padmate T5 true wireless Bluetooth headset
(06) Teardown report: Sony Ericsson T5 true wireless Bluetooth headset
MBT MBT is the inventor of GTSS lithium-ion batteries, glass-sealed explosion-proof valves, stainless steel grooved explosion-proof valves and continues to develop new lithium-ion battery technology. Through innovative technology, we can avoid intellectual property rights, ship to the global market, and provide customers with safe, reliable, and durable lithium-ion batteries. We also provide unimaginable high energy density, tiny sizes that cannot be manufactured with traditional technology, and are always open to customized development. We regard customers as our life, innovation as our root, and quality as our soul.
Application cases:
(01) Teardown report: OPPO Enco
Guangdong Microelectronics New Energy Co., Ltd. was established in December 2017 and is located in Dongjiang High-tech Industrial Park, Huizhou City. The company is primarily engaged in the design, production, and sales of lithium-ion steel case cylindrical button batteries, and is able to provide customized cells and battery packs based on customers' design specifications, allowing them to use the safest, highest-capacity batteries to power next-generation technologies. The products are mainly used in Bluetooth headsets, headphones, etc.
Application cases:
(01) Teardown report: 233621 Pearl true wireless Bluetooth headset
(02) Teardown report: 233621 Zen Pro true wireless earphones Noisy Headphones
(03) Teardown Report: AUKEY EP-T10 True Wireless Bluetooth Headphones
(04) Teardown Report: EDIFIER DreamPods True Wireless Bluetooth Headphones
p>(05) Teardown report: EDIFIER HECATE GM4 true wireless gaming headset
(06) Teardown report: EDIFIER HECATE GM6 true wireless gaming headset
(07) Teardown report: Edifier Lollipods Pro true wireless noise-canceling headphones
(08) Teardown report: EDIFIER TO-U2 true wireless Bluetooth headphones without any concerns
(09) Teardown report: EDIFIER TWS NB2 true wireless noise-canceling headphones
(10) Teardown report: EDIFIER X6 true wireless Bluetooth headphones
(11) Disassembly report: Jabra ELITE 85t true wireless noise-canceling headphones
(12) Disassembly report: JEET Air Plus true wireless Bluetooth headphones
(13) Disassembly report: Klipsch T5 true wireless Bluetooth headset
(14) Teardown report: MEIZU POP 2 true wireless Bluetooth headset
(15) Teardown report: MEIZU POP 2s true wireless Bluetooth headphones
(16) Teardown report: RHA TrueConnect 2 true wireless Bluetooth headphones
(17) Teardown report: RHA TrueControl ANC true wireless noise-canceling headphones
(18) Teardown report: UGREEN HiTune WS100 true wireless Bluetooth headset
(19) Teardown report: VIDVIE X-Pods true wireless Bluetooth headset
(20) Disassembly report: vivo TWS Earphone true wireless Bluetooth headset
(21) Disassembly report: vivo TWS Neo true wireless Bluetooth headset
(22) Disassembly report: Feizhi Technology Silver Fox T1 True Wireless Bluetooth Headphones
(23) Teardown Report: vivo TWS 2 True Wireless Noise Canceling Headphones
Nanfu Chuanying
Shenzhen Jingfu Technology Co., Ltd. is affiliated to Nanfu Group. Relying on Nanfu's unique multi-chemical system technology advantages, Jingfu Technology innovatively launched the world's first large-capacity IoT battery - Chuanying.
According to the working mode of IoT appliances, Chuanying made fundamental adjustments to the electrochemical system of the battery, effectively increasing the effective capacity of the battery, and launched rechargeable button batteries, rechargeable lithium batteries, lithium manganese button batteries and IoT alkaline batteries. A series of IoT batteries meet the large-capacity power demand of electrical appliances in different scenarios, making everything interconnected and responsive.
Application cases:
(01) Teardown report: NetEase Cloud Music Oxygen true wireless Bluetooth headset LITE version
OMNI
Application Case:
(01) Teardown report: Buttons Air true wireless Bluetooth headset
Samsung Samsung SDI
Tianjin Samsung Vision Co., Ltd. was established in September 1996 , a joint venture established by Samsung Electronics (SDI) and Tianjin Electronic Instrument Industry Corporation. The company is located in Yixian Science Industrial Park, Tianjin Economic and Technological Development Zone. The company currently has three CRT production lines and ten lithium-ion battery production lines. The products it produces include flat-screen color picture tubes, wide-screen color picture tubes and color display tubes, as well as mobile phone lithium-ion batteries. The company has currently established a research and development center and invested in the production of new products with broad market prospects.
Samsung SDI is a cutting-edge materials company that produces secondary batteries and semiconductors, displays, solar energy and other materials used in IT, automobiles, and ESS (Energy storage systems).
Application cases:
(01) Teardown report: Samsung Galaxy Buds Pro true wireless noise-canceling headphones
SNeng Deep Energy
Dongguan Shenneng Battery Technology Co., Ltd. is a manufacturer specializing in the production and processing of button batteries, button batteries, lithium batteries, lithium manganese batteries, nickel metal hydride batteries, dry batteries, rechargeable batteries and other products. It has a complete and scientific quality management system. Shenzhen Shenneng Battery Technology Co., Ltd. has been recognized by the industry for its integrity, strength and product quality.
Application case:
(01) Teardown report: KULARK acoustic true wireless Bluetooth headset
VARTA Valta
VARTA AG Produces and markets a comprehensive battery product portfolio, from micro batteries, household batteries, energy storage systems to customer-specific battery solutions, and serves as a technology leader setting industry standards in key areas. As the parent company of the group, its business segments include "Micro Batteries and Solutions" and "Household Batteries".
The "Micro Batteries and Solutions" segment focuses on the OEM business of micro batteries and the lithium-ion battery pack business. Through intensive research and development, VARTA has set global standards in microbatteries and is a recognized innovation leader in the important growth markets of lithium-ion technology and primary hearing aid batteries. The "Household Batteries" segment includes the battery business for end customers, including household batteries, rechargeable batteries, chargers, portable power supplies (power packs) and lights, and energy storage devices.
Application cases:
(01) Teardown report: Amazon Echo buds true wireless noise-canceling headphones
(02) Teardown report: Apple AirPods Pro True Wireless Noise Canceling Headphones
(03) Teardown Report: Beats Powerbeats Pro True Wireless Sports Headphones
(04) Teardown Report: Bose QuietComfort Earbuds True Wireless Noise Canceling Headphones
(05) Teardown report: Bose Sport Earbuds true wireless Bluetooth headphones
(06) Teardown report: Bose SOUNDSPORT FREE true wireless Bluetooth headphones
(07 ) Teardown report: BRAGI The Headphone TWS Bluetooth headset
(08) Teardown report: JLab Epic Air true wireless sports headphones
(09) Teardown report: Microsoft Surface Earbuds True Wireless Bluetooth Headset
(10) Teardown Report: Samsung Gear IconX True Wireless Bluetooth Headset
(11) Teardown Report: Samsung Gear IconX 2018 True Wireless Bluetooth Headset
(12) Teardown report: Samsung Galaxy Buds true wireless Bluetooth headphones
(13) Teardown report: Samsung Galaxy Buds Live true wireless noise-canceling headphones
(14) Teardown report: SONY WF-1000X true wireless noise-cancelling headphones
(15) Teardown report: SONY WF-1000XM3 true wireless noise-cancelling headphones
(16) Teardown report: SONY WF-SP700N true wireless Bluetooth headphones
(17) Teardown report: SONY WF-SP900 true wireless sports headphones
(18) Teardown Teardown report: SONY WF-XB700 true wireless Bluetooth headset
(19) Teardown report: Google Pixel Buds Bluetooth headset
(20) Teardown report: Bamp; O Beoplay E8 True Wireless Bluetooth Headset
VDL Chongqing Zijian
VDL Group is the industry's leading professional manufacturer of polymer lithium batteries. It was founded in 2006 and is headquartered in Kaizhou District, Chongqing. VDL Group has three companies: Chongqing Zijian Electronics Co., Ltd. (headquarters and manufacturing), Guangdong Viduli New Energy Co., Ltd. (R&D and manufacturing), and Shenzhen Viduli Electronics Co., Ltd. (marketing and sales).
VDL Group is a Chinese national high-tech enterprise integrating basic research and development, application design, intelligent manufacturing, global sales and service of lithium batteries; the battery is safe and environmentally friendly, and its products have passed international safety certifications such as CE/UL . End customers are located in China, the United States, Europe, Japan and South Korea and other countries and regions. The company has a management team with rich experience working in multinational enterprises and many senior technical experts in the lithium battery industry. The team has extensive background in the battery technology industry and rich experience in terminal products.
Application cases:
(01) Disassembly report: 1MORE Wanmo Circle Iron Active Noise Canceling True Wireless Headphones
(02) Disassembly report: 1MORE Stylish True Wireless Bluetooth Headphones
(03) Teardown Report: 233621 Zen True Wireless Noise Canceling Headphones
(04) Teardown Report: Air by Crazybaby True Wireless Bluetooth Headphones
(05) Teardown report: Amazfit Huami Technology Powerbuds true wireless sports headphones
(06) Teardown report: Amazfit Huami Technology ZenBuds sleep earbuds
(07) Teardown report: Anker Soundcore Liberty Air true wireless Bluetooth headset
(08) Teardown report: Cleer ALLY true wireless Bluetooth headset
(9) Teardown report: Cleer ALLY PLUS True Wireless Noise Canceling Headphones
(10) Teardown Report: HONOR FlyPods Youth Edition True Wireless Bluetooth Headphones
(11) Teardown Report: HONOR FlyPods 3 True Wireless Noise Canceling Headphones
(12) Teardown Report: HUAWEI FreeBuds True Wireless Bluetooth Headset
(13) Teardown Report: HUAWEI FreeBuds Enjoy Edition True Wireless Bluetooth Headset
p>(14) Teardown report: Libratone TRACK Air true wireless Bluetooth earphones
(15) Teardown report: Libratone TRACK Air true wireless noise-cancelling earphones
(16) Teardown report: Libratone TRACK AIR true wireless noise-canceling headset 10th anniversary edition
(17) Teardown report: MEIZU POP true wireless Bluetooth headset
(18) Teardown report: MI Xiaomi Air true wireless Bluetooth headset
(19) Teardown report: MI Xiaomi Air2 Pro true wireless noise reduction headset
(20) Teardown report : Xiaomi FlipBuds Pro Noise Canceling Headphones
(21) Teardown Report: OPPO O-Free True Wireless Bluetooth Headphones
(22) Teardown Report: OPPO Enco Free True Wireless Bluetooth Headphones
(23) Disassembly report: plantronics BackBeat FIT 3100 true wireless sports headphones
(24) Disassembly report: plantronics BackBeat FIT 3200 true wireless sports headphones
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(25) Teardown report: Jingyuzuo U-WORLD S1 true wireless Bluetooth headset
(26) Teardown report: iFLYBUDS true wireless Bluetooth headset
(27) Teardown report: Nubia Pods TWS true wireless earphones
(28) Teardown report: Xiaowen TicPods Free true wireless Bluetooth earphones
(29) Disassembly report: Xiaowen TicPods Free Pro true wireless Bluetooth earphones
(30) Disassembly report: Xiaowen smart earphones Ticpod Solo
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(31) Disassembly report: Marshall Mode II true wireless Bluetooth headset
YANJOO Yanjiu Electronics
Shenzhen Yanjiu Electronic Technology Co., Ltd. is affiliated to Hong Kong Yanjiu New Energy Group Company is a high-tech private enterprise specializing in the research, development, production and sales of lithium-ion batteries. The company currently has four business divisions: polymer lithium batteries, cylindrical lithium-ion batteries, power lithium batteries, and PACK finished lithium batteries, with production bases in Dongguan, Shenzhen, and Yichun respectively. The main products include conventional polymer and cylindrical lithium batteries, super size lithium batteries, curved and meniscus lithium batteries, high energy density lithium batteries, high rate lithium batteries, high temperature resistant lithium batteries, and low temperature resistant lithium batteries. Products are widely used in military and civilian instruments, financial POS machines, Bluetooth and wireless digital products, wearable and Internet products, Beidou positioning equipment, drones, industrial and household robots, electric vehicles and power tools, high-end lighting and many other fields. .
Application cases:
(01) Teardown report: Baseus AirNora true wireless Bluetooth headset
ZeniPower battery
Zhuhai Zhili Battery Co., Ltd. has a 30-year history in the field of zinc-air button batteries and has become a leading international manufacturer of hearing aid batteries. The company's products have obtained a number of Chinese and American patents, and their product quality complies with the International Electrotechnical Commission IEC standards and has reached the world's advanced level.
Application cases:
(01) Teardown report: Philips SHB4385 true wireless Bluetooth headset
(02) Teardown report: SONY WF-H800 True wireless Bluetooth headphones
(03) Teardown report: Sony WF-1000XM4 true wireless headphones
4. Summary of I Love Audio Network
Among TWS headphones , the battery occupies the "heart" position, providing energy for every functional application of the product. The size, capacity, battery life, and safety performance of the battery directly affect the user experience of the terminal product. Therefore, both brand customers and consumers attach great importance to TWS headphone batteries.
As one of the application batteries for TWS headsets, steel-shell button batteries have many advantages such as small size, high density, good consistency, high safety, not easy to deform, low expansion rate, and easy assembly. Advantages, it has been widely used in TWS headsets.
From the summary of I Love Audio Network, we can find that there are already many battery manufacturers deeply exploring this market, and the battery sizes and capacities are also very rich to meet the needs of different brands according to their own product positioning choices. . Among them, Yiwei Lithium Energy, Microelectronics New Energy, VARTA, Chongqing Zijian and other brand products have been adopted by many TWS headsets and occupy a large market share in the market.
As the sales of TWS earphones continue to grow and product functions continue to enrich, the requirements for TWS earphone batteries are also constantly increasing. With its advantages, steel-shell button batteries will be used more and more in future development. for extensive. Therefore, we very much look forward to battery manufacturers continuing to launch excellent steel shell button battery products to help the stable and healthy development of the TWS headset market.