Is the larger the capacity of the high-capacity polymer lithium battery the better?
In today‘s society, most of them use some lithium batteries as a power source. Because of their small size, light weight and large capacity, they are very popular among consumers. But have you really researched whether the lithium batteries that are often used are qualified? Is the storage capacity of high-capacity polymer lithium batteries the bigger the better?
Different models and specifications, especially batteries of different sizes, the higher their storage capacity, the longer the usage time. Let us put aside the factors of size and weight, large-capacity backup lithium batteries are naturally the higher the storage capacity, the better.
The same large-capacity backup lithium battery model has the same nominal capacity (for example, 600mAh), but the specific initial storage capacity is different. better?
In fact, there are many battery manufacturers on the market now, in order to achieve monetary benefits, falsely mark the storage capacity, and sell the 40-amp battery as 80-amp, reminding everyone to buy a battery from a lithium battery manufacturer; the actual situation is likely to be storage. A battery with a higher capacity, after all, there are some things in the electrode material that increase the initial capacity, thereby reducing the stability of the electrode. The result is that after repeated use for dozens of times, the battery with higher storage capacity will quickly become Storage capacity declines, while lower-capacity batteries are still going strong.
If you are afraid of the virtual standard of polymer lithium battery, then let‘s take a look at the calculation method of polymer lithium ion battery:
For the quick estimation of polymer battery capacity, the commonly used estimation formula is: storage capacity=thickness*width*length*K (K unit is mah/mm^3). In the range of K value (0.07~0.11), the K value depends on the storage capacity. ). In fact, the value of K can be set to 0.1.
For example, 103450 (10mm thick, 34mm wide, 50mm long), the calculated capacity=10*34*50*0.1=1700, the actual capacity is about 1800mah;
For example, 603048 (thickness 6mm, width 30mm, length 48mm), the calculated storage capacity=6*30*48*0.1=864, the actual capacity can reach 900mah.
