Impact of internal resistance on the consistency

The internal resistance of a battery is a criterion of its performance during the manufacturing process of battery.If two batteries have the same initial capacities,but have different internal resistances,the heat generated during charging batteries will be different,resulting in different rates of water loss.The decay rate of batteries' capacities will be different with cycling,then the difference of capacities will be increased,and eventually one battery will fall behind.The internal resistance as a criterion can slow down the falling behind process of battery when making batter match.