What are the differences between lithium battery usage and lead acid usage?

①The voltage range is inconsistent. The voltage range of lithium iron phosphate battery is 2.0V~3.65V, and the voltage range of ternary lithium battery is 2.75V~4.2V. When using a single PACK to form a battery pack, multiplying by the number of strings, the voltage range of the 12V lead-acid battery is no longer in full compliance. When lithium battery replaces lead-acid, it is necessary to update the setting parameters of the load, and even to replace the components. ②Lithium battery packs cannot be used as 12V series and parallel lead-acid batteries at will. You can do series and parallel connections at will. Like UPS products, you can also draw a neutral line from a 384V battery to 192V (that is, draw a line in the middle of the 32 strings, change Into 2 groups of 16 strings). For lithium batteries, a current limiting module must be added in parallel to achieve, and the series must be added with the withstand voltage of the BMS. Especially for battery packs with communication protocols, the realization of the BMS function after series and parallel is more complicated. Special reminder, the lithium battery pack used alone cannot be used in series or parallel connection! ③Lithium battery pack has BMS, there will be virtual voltage. Lead acid has no BMS and there is no protection, so the output voltage is the true voltage of the battery. The lithium battery pack has a BMS. When the protection function is activated, the output voltage will be a virtual voltage value. For example, after the over-discharge protection, the battery pack output is 0V and needs to be charged and activated. 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: Can lithium batteries really replace lead-acid batteries?