Battery for Ryobi tools 18v 4000mAh/6000mAh/9000mAh 4,0Ah/6,0Ah/9,0Ah Li-Ion BPL-1815 Replacement

The Ryobi 18v 4000mAh/6000mAh/9000mAh 4.0Ah/6.0Ah/9.0Ah Li-Ion battery has a capacity of 4000/6000/9000 milliampere hours. This indicates the current of the battery and is indicated as Ah or mAh. Is the capacity high? Then it takes a long time for the battery of your 18v ​​tool to be empty. Is mAh lower? Then you will have to charge the battery more often. With more mAh your machine does not become more powerful!