Technical Handbook Rechargeable Li-Ion Button Cells

Content 1. GENERAL INFORMATION ______________________________________ 1.1 Definitions __________________________________________________ 1.2 Features ____________________________________________________ 1.3 Applications _________________________________________________ 1.4 General design and application c riteria __________________________ 1.5 Construction and electromechanical processes of CoinPower Batteries ______________________________ 2. MISCELLANEOUS ____________________________________________ 10 2.1 Specification table VARTA CoinPower Batteries ___________________ 11 2.2 Data-Matrix...

1. General Information 1.1 Definitions 1.2 Features 1.3 Applications 1.4 General design and application criteria 1.5 Construction and electromechanical processes of CoinPower Batteries

COINPOWER | GENERAL INFORMATION General Information VARTA Microbattery is a leading manufacturer of batteries and provides professional support worldwide to customers to help them to design VARTA batteries into their applications. Quality, reliability, high performance and customer satisfaction are the main reasons for our leading position in the market. VARTA Microbattery provides solutions to major OEM companies for high-tech applications such as Bluetooth headsets, activity trackers, heat cost allocator devices, back-up for memory and the real-time clock in PCs / notebooks as well as alarm...

COINPOWER | GENERAL INFORMATION 1.1 Definitions Unless otherwise stated, specified values are valid for operation at room temperature 20 ºC ± 3 ºC. Specific Data The gravimetric energy density of the Li-Ion Coin Power series depends on battery size, and ireaches up to 190 Wh/kg. Volumetric energy density ranges up to 500 Wh/l. Voltage Definitions Open Circuit Voltage (OCV): Equilibrium potential 3.0 V to 4.3 V on average, dependent on temperature, storage duration and state of charge. Nominal Voltage of Li-Ion cells is 3.7 V End of Discharge Voltage (EOD): The voltage at the end of discharging...

COINPOWER | GENERAL INFORMATION 1.2 Features VARTA CoinPower batteries are the first choice for a number of modern high-tech portable products. They provide a long lasting, reliable main power source which is lightweight and occupies a minimum of space in the host device. VARTA CoinPower batteries meet the most important design requirements of these products: Reliable high-power output, design flexibility with a minimum of space requirement and a round form factor. • High energy density • Wound electrode design • Built-in safety device with chemical safety components • Fully automated production...

COINPOWER | GENERAL INFORMATION 1.3 Applications VARTA CoinPower batteries are especially suitable for modern electronic applications such as Bluetooth Mono / Stereo Headsets, Sensors for Fitness / Sport / Healthcare, Smart Watches, Wearable Technology, Smart Car Keys and many more. These cells are the ultimate power source for your electronic devices and make your products smaller, lighter and more attractive. VARTA CoinPower provides outstanding performance and reliability, excellent quality along with very safe operation. IOT Smart Home

COINPOWER | GENERAL INFORMATION 1.4 G eneral design and application criteria Choose the most suitable battery from our range of VARTA CoinPower cells for the needs of your application and the conditions in which it is expected to operate. The most important criteria for the selection of battery type are these: • • • • • • • Required minimum operating time Max. and average current drain Min. and max. operating voltage Operating temperature range Mechanical properties Available space Environmental conditions You can choose a cell from the VARTA CoinPower range to operate within the following limits:...

COINPOWER | GENERAL INFORMATION 1.5 C onstruction and electromechanical processes of CoinPower Batteries The housing of the CoinPower cells consists of two stainless steel parts. This gives the cell very high mechanical stability during assembly in the end-product as well as during the product’s use by the customer. Inside the cell the anode, cathode and separator are wound to a coil. The connection of the electrodes to the housing is made by welding from the outside to the lid and cup. The innovative design of the housing, combined with its foil gasket, provides for the most efficient use of...

2. Miscellaneous 2.1 Specification table VARTA CoinPower Batteries 2.2 Data-Matrix Code

2.1 S pecification table VARTA CoinPower Batteries The CoinPower is available in three different chemistries, different diameters and 3 different heights. Version Technology Nominal Voltage Max. charging Current Cell diameters in the range of 7.8 mm up to 21 mm Further designs on request Model Number The model numbers are two uppercase letters and a figure consisting of four digits. The version number consists of one letter and one figure as shown in the example. Model Number Battery Type (CP – CoinPower) Cell Height (here: 5.4 mm) Cell Diameter (here: 16 mm)

2.2 Data Matrix Code In order to make every single cell fully traceable, two data matrix codes are printed on lid and cup of each one. This codes provide information about the production date, the version and the winder or assembly line. Please note that the codes are printed on every individual cell produced in Germany. The battery code is different, and is indicated on the battery drawing. Data Matrix Code cell diameter ≥ 10 mm Data Matrix Code Unique cell identification code Data Matrix Code Unique cell identification code Day of the year

Data Matrix Code cell diameter < 10 mm Data Matrix Code Unique cell identification code Day of the year 0124010740 Date Code Version number VARTA Day of the year

Charging Specific Charging A-Version Specific Charging C-Version Specific Charging F-Version 3.2 Discharging Specific Discharging A-Version Specific Discharging C-Version Specific Discharging F-Version 3.3 Charging IC