What is the meaning of secondary lithium battery pack
Lithium battery" style="white-space: normal;">Lithium battery is divided into primary and secondary. Primary lithium battery is not rechargeable lithium battery, secondary lithium battery is rechargeable lithium battery.
Primary lithium battery is mainly used in the civil field: public instrument RAM and CMOS circuit board memory and backup power: memory backup, clock power, data backup power: such as a variety of smart card meter /; water meter, electricity meter, heat meter, gas meter, camera; electronic measuring instruments: intelligent terminal equipment, etc.; in the industrial sector is widely used in automation instruments and equipment: automotive electronics TPMS, oilfield Oil wells, mining, medical equipment, anti-theft alarm, wireless communication, sea rescue, servers, inverters, touch screen, etc;
Secondary lithium batteries are often used in cell phone batteries, electric car batteries, electric car batteries, digital camera batteries, etc.
The four major differences between primary and secondary batteries
From the structural point of view, the secondary battery reversibly changes between the volume and structure of the electrode during discharge, while the primary battery is much simpler internally because it does not need to adjust these reversible changes.
Primary battery
Primary batteries have a higher mass-to-capacity and volume-to-capacity than ordinary rechargeable batteries, but the internal resistance is much larger than that of secondary batteries, so the load capacity is lower.
Primary battery
The self-discharge of primary batteries is much smaller than that of secondary batteries. Primary batteries can only be discharged once, for example, alkaline batteries and carbon batteries belong to this category, while secondary batteries can be recycled repeatedly.
Secondary batteries are more environmentally friendly than primary batteries. Primary batteries must be discarded after use, while rechargeable batteries can be used repeatedly, in line with national standards of the next generation of rechargeable batteries can usually be used repeatedly more than 1000 times, which means that the waste generated by rechargeable batteries is less than 1 in 1000 of the primary battery, whether from the reduction of waste or from the perspective of resource utilization and economic considerations, the superiority of the secondary battery is very obvious.
The internal resistance of the primary battery is much larger than the secondary battery, and its high-current discharge performance is not as good as that of the secondary battery.
Under the condition of low current and intermittent discharge, the mass ratio capacity of primary battery is larger than that of ordinary secondary battery, but when the discharge current is larger than 800mAh, the capacity advantage of primary battery will be significantly reduced.
Secondary lithium battery pack 4-cell and 6-cell which is better
6-cell is a battery pack composed of 6 cells, while 4-cell is a battery pack composed of 4 cells.
In general, the damage to the battery is due to damage to a single cell, resulting in the destruction of the entire battery. The number of cells will naturally have a lower chance of failure. But the 6-cell battery standby time is long. As for that good depends on your own, if you can disassemble and repair the choice of 6-cell, otherwise it is recommended 4-cell.
In the case of the same brand with the same capacity, I think the four-cell better, because many of the battery damage is due to damage to a single cell led to the scrapping of the whole battery. The number of cells is less natural failure rate will be lower.
But the battery can not simply use the number of batteries to measure, to see the brand quality of the battery cells and other factors.
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