Datasheet CR2450 (EEMB) - 7

CR2450 Datasheet EEMB Li-MnO2 Battery
(Edition: Apr. 2016)  When the batteries are piled up in a disorderly way, their positive and negative terminals may short-circuit, consuming some batteries while charging others, causing explosion.  Lithium batteries that are almost exhausted can output a voltage that is almost the same as that of a new battery: Please does not judge a battery only with a Voltmeter. Do not mix batteries of different types and brands, or new and used batteries. We are well informed that battery pack should be assembled with single batteries of similar voltage, capacity and inner resistance.  Lithium batteries need a period of time to recover their normal voltage after even a slight short circuit. Therefore, if the battery is short-circuited, wait an adequate long time for batteries to recover before measuring their electrical characteristics.  Use a high impedance (1M or higher) voltmeter to measure battery voltage.  Add fuse between negative and connector. Once short circuit, it will cut immediately and permanently.  Do not contactterminals with conductive i.e. metal, goods. Keep batteries in non-conductive, i.e. plastic, trays.  Reduce impact to insulation layer from vibration, but the dimension willenlarge.  Battery characteristics vary with type and grade, even when batteries are the same size and shape. When replacing batteries with new ones, be sure to carefully check the symbols and numbers on them.
! Danger
 DO NOT recharge, short-circuit, disassemble, deform, heat or place the battery near a direct flame. This battery contains flammable materials such as lithium and organic solvent and performing any of the above actions could cause it to ignite explode or become damaged.  DO NOT over-discharge the battery. In case the battery is over-discharged when connected with exterior power source or connected with other batteries in series, explosion mayoccur.  Keep this battery out of the reach of children. If it is swallowed, contact a physician immediately.  When storing a battery or throwing it away, be sure to cover it with tape. If the battery is contacted with other metal objects, it could cause fire or become damaged.
! Warning
 Thoroughly read the user’s manual before use, inaccurate handling may cause leakage, heat, smoke, explosion, or fire, causing device trouble or injury.  Insert the battery with the "+" and "-" ends correctly oriented.  If the battery is used together with new batteries, do not use it with a different type battery.  Do not solder the battery directly. Protect the welding point and connector.  The battery should be preferably stored in dry and cool conditions. Avoid storing the battery in direct sunlight, or in excessively hot and humid place. Storage at high temperature must be avoided to preserve the battery life time.
! Storage and Mount
The cell should be preferably stored in dry and cool conditions. +60℃, 120 days stored condition is the equivalent of 6 years at room temperature (+21℃). Button lithium batteries need special method to avoid short-circuiting before and after they are installed. As short circuits tend to occur in the following cases, please take care when handing the batteries. 7 Document Outline EEMB CO., LTD Specification Battery Structure Scope Features and Applications Battery Basic Characteristics Performance and Test Methods Characteristics Curve Matters Needing Attention ! Caution ! Danger ! Warning ! Storage and Mount Overlapping Batteries Batteries put in a Metallic Container or on a Meta When a Battery is Held with Tweezers When Battery Lead Plates Touch Each Other Solder Bridges Short-circuited though Soldering Iron Shorts through Piled Circuit Board Discharge through Conductive Electrostatic Prevent Improper Battery Mounting Polarity Solder