Battery Encyclopedia

What Is the Self-discharge of Secondary Battery? Self-discharge is also called charge retention capability. It’s the retention capability of battery for the stored power under certain environmental conditions in an open circuit state. Generally speaking, manufacturing processes, materials, and storage conditions are the main influence factors for self-discharge. Self-discharge is one of the main parameters to measure battery … Read more

What is Charge and Discharge Efficiency of Battery? Discharge efficiency refers to the ratio of the actual electricity discharged to the terminal voltage and the rated capacity under a certain discharge condition. It is mainly affected by factors like the discharge rate, ambient temperature, and internal resistance. Generally, the higher the discharge rate, the lower … Read more

What Is the Output Power of Battery? The output power of a battery refers to the ability to output energy per unit time. It is calculated based on the discharge current I and the discharge voltage, P=U*I, the unit is watts. The smaller the internal resistance of the battery, the higher the output power. The … Read more

What Is Pulse Charging and Its Impact on Battery Performance? Pulse charging generally uses the method of charging and discharging, that is, charging for 5 seconds and then releasing for 1 second. So most of the oxygen generated during the charging process will be reduced to electrolyte under the discharge pulse. And that limits the amount of internal … Read more

What Is the Charging Method of Lithium Battery? Constant current and constant voltage charging: The battery is first charged with constant current (CC). When the battery voltage rises to a certain value, the voltage remains unchanged (CV), and the current in the circuit drops to a small amount, eventually tending to zero.

What Are the Battery Safety Test Items? 01) Short circuit test 02) Overcharge and overdischarge test 03) Withstand voltage test 04) Impact test 05) Vibration test 06) Heating test 07) Fire test 08) Variable temperature cycle test 09) Trickle charge test 10) Free drop test 11) Low air pressure test 12) Forced discharge test 13) … Read more

What Is the Marking Method for Rechargeable Batteries Specified by IEC? According to the IEC61960 standard, the identification of the secondary lithium battery is as follows: 01) The identification composition of battery: 3 letters, followed by 5 numbers (cylindrical) or 6 (square) numbers. 02) The first letter: indicates the negative electrode material of the battery. I—represents lithium … Read more

What Are the Reliability Test Items for Battery? 01) Cycle life 02) Discharge characteristics of different rate 03) Discharge characteristics at different temperatures 04) Charging characteristics 05) Self-discharge characteristics 06) Storage characteristics 07) Over-discharge characteristics 08) Internal resistance characteristics at different temperatures 09) Temperature cycle test 10) Drop test 11) Vibration test 12) Capacity test 13) … Read more

What Is the Purpose of Battery Packaging, Assembly and Design? 01) Beautiful and branded. 02) Limited battery voltage. To obtain a higher voltage, just connect multiple batteries in series. 03) Protect the battery, prevent short circuit and prolong battery life. 04) Size limitation. 05) Easy to transport. 06) Design of special functions, such as waterproof, special appearance design, etc.

What Are the Packaging Materials of Battery? 01) Non-dry meson (paper) like fiber paper, double-sided tape 02) PVC film, trademark tube 03) Connecting sheet: stainless steel sheet, pure nickel sheet, nickel-plated steel sheet 04) Lead-out piece: stainless steel piece (easy to solder) Pure nickel sheet (spot welded firmly) 05) Plugs 06) Protection components such as temperature control … Read more