Four major differences between primary batteries and secondary batteries

From the structural point of view, the secondary battery undergoes reversible changes between the electrode volume and structure during discharge, while the interior of the primary battery is much simpler, because it does not need to adjust these reversible changes. The mass specific capacity and volume specific capacity of primary batteries are larger than ordinary rechargeable batteries, but the internal resistance is much larger than that of secondary batteries, so the load can be lower. The self-discharge of primary batteries is much smaller than that of secondary batteries. A battery can only be discharged once, for example, alkaline batteries and carbon batteries fall into this category, and secondary batteries can be recycled repeatedly. The secondary battery is more environmentally friendly than the primary battery. Once a battery is used, it must be discarded, and the rechargeable battery can be reused. The next-generation rechargeable battery that meets the national standard can usually be reused more than 1000 times. That is to say, the waste generated by the rechargeable battery is less than 1/1000 of the primary battery. Regardless of from the perspective of waste reduction or resource utilization and economy, the advantages of secondary batteries are very obvious. The internal resistance of the primary battery is far greater than that of the secondary battery, and its high-current discharge function is not as good as that of the secondary battery. Under the condition of low current and intermittent discharge, the mass specific capacity of the primary battery is greater than that of the ordinary secondary battery, but when the discharge current is greater than 800mAh, the capacity advantage of the primary battery will be significantly reduced. Which is better, 4-cell or 6-cell secondary lithium battery pack. A 6-cell battery pack is a battery pack made of 6 batteries, and a 4-cell battery pack is a battery pack made of 4 batteries. Under normal circumstances, the damage of the battery is due to the damage of a single cell which leads to the obsolescence of the whole battery. If the number of batteries is small, the probability of natural failure will be lower. But the 6-cell battery has a long standby time. As for the good one, it's up to you. If you can disassemble and repair it yourself, choose 6-core, otherwise you still advocate 4-core. In the case of the same brand and the same capacity, I think the four-cell is better, because many battery damages are caused by the damage of a single cell, which leads to the failure of the entire battery. If the number of batteries is small, the probability of natural failure will be lower. Disclaimer: The articles published on this website are all from the Internet. If there is any infringement, please contact to delete it. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to charge lithium batteries