Assembling standard of a low-speed battery pack.

Assembling standard of a low-speed battery pack.

Voltage, internal resistance, and capacity difference, the cell's platform.

It is better to leave the battery fully charged (3.65V) for 2 days before voltage pairing! It is not difficult to understand: first of all, the capacity is the same, indicating that the full capacity must be the same, in the process of use if the platform is the same, the voltage will also change. Left for 2 days this is the effect of the battery's self-consumption.

However, due to the characteristics of lithium iron phosphate battery after combination, the consistency changes are relatively large, so the general Lithium iron phosphate battery should be balanced management.

Lithium battery combination is to pay attention to consistency, a few batteries or dozens of batteries in series and parallel discharge, consistency is not good, it will lead to uneven discharge, one cell is fully discharged, but another one is only discharged half of capacity, so that the battery can not reach the maximum power discharge. Battery group requirements: the capacity difference is less than or equal to 50mAh, the voltage difference is less than or equal to 0.02V, internal resistance difference is less than or equal to 3 milliohms, of course, the type of the battery first is to be the same!