Why does lithium polymer battery have zero voltage? How to deal with it?

The reasons for the zero voltage of the lithium polymer battery: 1) Whether the battery has suffered an external short circuit, overdischarge, or reverse charging (reversely connect the positive and negative poles of the battery or the positive and negative poles of the charger, the battery is equivalent to forced overdischarge when charging); Whether the electrical circuit is normal; whether the battery of the spot welded product is burnt again. 2) Whether the battery is continuously overcharged by high-rate and high-current, which causes the battery core to expand, and the internal positive and negative electrodes are directly contacted and short-circuited. 3) Whether the battery tabs are in good condition. 4) Check whether the battery has zero (low) voltage; 5) Check whether the connection of the battery pack, the electronic components, and the protection circuit are abnormal. 6) Check whether the charging device or charging circuit has charging voltage/current output in the charging state; 7) Whether the ambient temperature is too high and the charging efficiency is low; the method of dealing with the zero voltage of the lithium polymer battery 1) Know the specifics of the customer’s battery Usage; 2) Recharge the battery of the same model and connect it to the electrical appliance to determine whether the electrical appliance is normal; 3) Charge the battery with 1C current for 30 minutes and leave it in an open circuit for about 10 minutes, if the open circuit voltage of the battery is stable at the battery's normal voltage Within the range, the battery can basically return to normal. If the battery has been damaged, the voltage cannot be restored; if the battery is not used and this phenomenon occurs, the charging voltage cannot be restored with IC, and further analysis by professional and technical personnel is required. 4) Customers can be advised to choose batteries with protective electronic components such as fuse, temperature switch, or integrated circuit (disconnect the circuit in the case of overcurrent charging and discharging and short circuit, overcharging, overdischarging, and reverse charging, so as to protect the battery from damage). 5) Customers are advised to pay attention to the spot welding current and the distance between the welding pins, and minimize the number of times of folding the tabs back and forth. 6) Understand the customer’s specific usage and usage conditions of the battery: 7) Analyze and process the same steps as the single battery; 8) Take the same type of battery and a multimeter (current file) into the circuit for charging, and judge whether the charging device is based on the charging current value normal. 9) It is recommended that customers choose charging equipment or charging circuits with better stable performance; 10) Know whether customers are self-assembled battery packs. If there is no such phenomenon, or there is such a phenomenon before use, further analysis by professional and technical personnel is required. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Detailed explanation of the characteristics of supercapacitor batteries