Some questions about the use of polymer lithium batteries.

Some questions about the use of polymer lithium batteries.

1. How to use the newly purchased polymer lithium battery? Should it be charged quickly or charged from the battery first? How to charge and discharge? The factory settings are already activated, and the battery is quickly charged first, so any abnormal usage may occur.   

2. At the beginning of using the new battery, the working voltage is uneven. After charging and discharging multiple times, all the abnormalities occur again. What is the problem? The key is that although individual cells in the battery pack are well matched, there may still be individual differences in self discharge. New batteries usually take more than 3 months from the manufacturer to the customer, during which individual cells will have different operating voltages due to different self discharges, resulting in an increase in the difference in operating voltage in the battery pack (i.e. imbalance); Because current battery chargers on the market have fast charging and stable balancing functions, imbalances are usually repaired through fast charging of battery chargers.   

3. What kind of regional environment should lithium batteries be stored in? Store in a cool and dry area at room temperature of 15-35 ℃ and air humidity of 65%

4. How long can lithium batteries last? How many cycles are usually required for all deformities? What factors affect lifespan? Lithium batteries for model aircraft can usually be used about 100 times, and the key factors affecting their lifespan are: 1. Environmental temperature. The battery cannot be used or stored in an overheated area (35 ℃); 2. Charging and discharging, rapid charging of the battery pack, and improper charging of the battery should ensure that the working voltage of each individual cell is between 4.2-3.0V. During high working current operation, the continuous recovery of the working voltage should be ensured to be above 3.4V; 3. Choose a model with a suitable rated power to avoid the battery pack being used haphazardly under overload conditions.   

5. Do new lithium batteries need to be activated? Will it have any impact if it is not activated? No need to activate, new batteries usually take more than 3 months from the manufacturer to the customer's hands. The battery will remain in a dormant state and is not suitable for immediate high-intensity battery charging, otherwise it will affect the battery's utilization efficiency and lifespan.   

6. What is the reason why a new battery cannot be charged? Zero battery cells, high internal resistance of batteries, and incorrect charging mode of battery chargers.   

7. What does the C number of polymer lithium batteries represent? C is the symbol for battery capacity, which is different from the symbol for operating current; I; is the same meaning; C number; Representing the commonly referred to multiplier, which is the abbreviation for the working current of a battery that may operate at its nominal capacity. Taking 2200mAh20C as an example, 20C indicates the working current of 2200mA × 20=44000mA for all abnormal operations of the battery. Charging a 20C battery uses a working current of 44000mA to charge the battery.  

8. What is the optimal storage working voltage for polymer lithium batteries? What is the typical battery charge set at the factory? The working voltage of a single device is between 3.70-3.90V, and it is usually set to consume 30-60% of the electricity at the factory.