Since the voltage platform and performance of lithium iron phosphate batteries can perfectly replace lead-acid batteries, can 12V lithium iron phosphate batteries be mixed and used together with 12V lead-acid batteries?

　　12V lead-acid batteries and 12V lithium batteries must NOT be mixed!

　　Lithium batteries and lead-acid batteries are inherently different in internal resistance and materials, and their charge and discharge characteristics are very different, which can easily cause safety hazards.

　　The charging method of lithium batteries is completely different from that of lead-acid batteries, and it is likely that both of them cannot be charged normally when the two are mixed and matched.

　　In the application scenario with lead-acid batteries as the main body, the charging and discharging conditions are set according to the conditions of lead-acid batteries. If the voltage range of the lithium battery is greater than the voltage range of the lead-acid battery, no special protection is needed for the lithium battery, but it is easy to cause the lithium battery to be not fully charged or empty. If it is less than, then the lithium battery will often be in a protected state and is easily damaged.

　　The load characteristics and capacity of lithium batteries and lead-acid batteries are different. Mixing and matching will cause abnormal situations. We must determine the battery parameters according to the actual conditions, and then select the appropriate battery.

　　To sum up: 12V lithium batteries and 12V lead-acid batteries cannot be mixed and used. If they are mixed together, it is very likely that accidents such as battery damage or even fire will occur.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect substitute for lead-acid batteries, and are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data centers and other industries.