Not exactly what they are but the easiest context to understand. That said I did a quick look at the two ads again and the 2 6AH battery notes a combined run time of 70 minutes or 35 minutes per battery. The 7.5ah doesn't mention run time. As someone noted below the 7.5 AH adds 25% to this or about 9 additional minutes or 44 minutes per battery. CREABEST 2Packs 14.4V 3.5Ah Ni-MH for Makita Replacement Battery 1434 1420 1422 1433 PA14 1435 1435F 192600-1 193985-8, Include 1.2V-18V Ni-MH/Ni-CD Battery Charger Replacement Battery Compatible with Makita 14.4V Battery Ni-MH 3.0Ah 1420 1422 1433 1434 1435 1435F 192699-A 193158-3 192600-1 Cordless Power Tool-2 Pack . If you are going to be buying high power tools in the future, go with a 5Ah for the extra runtime. For the impact driver, the DTD 152 is brushed and a basic model. The DTD 153 is brushless. Brushless is much better, more efficient (more runtime with the same battery) and it will last longer. I have the Makita XCU06, in my use with it I have noticed that the 4ah batteries run really well in it for a short period of time, whereas the 5ah donā€™t have quite the torque but run for a lot longer. Itā€™s cool to see why, the 4ah has a higher discharge rate on top of being a smaller battery. So it could charge a 4Ah battery in 1hr. 6Ah battery would take 1.5hrs. It claims it charges 2X faster than PCG002. PCG002 is the generic charger that comes with most kits. If PCG004 is 2X faster, then PCG002 charges at 2Ah. Assuming you have this charger, two 4Ah batteries would take 4hrs to charge, and a single 6Ah battery would take 3hrs to This 18V ONE+ 6.0 Ah LITHIUM+ HP Batteries (6-Pack) is backed by the RYOBI 3-Year Manufacturer's Warranty and includes (6) P193 18V ONE+ 6.0 Ah LITHIUM+ HP Battery and Operatorā€™s Manual. Charger sold separately. LED Indicator to show charge status. Easily snaps into place and detaches with quick-release buttons. Recharge on any 18V ONE+ charger. Posted October 3, 2019. On 9/30/2019 at 4:45 AM, JimboS1ice said: The 6.0 xr has the higher output cells versus the flex volt 2.0/ 6.0 running the older 18650s. You will get more performance and runtime on the xr 6.0 because of those cells compared to a flex battery. If you go into the 3/9 FV they have HO cells in it.

makita 6ah battery vs 5ah