![]() ![]() Let’s say the Makita XFD07 needs 360 watts of power to drill the next hole. Where the number of cells comes into play is in the amps (current). The drill really is asking for 18V from both batteries, so that remains constant. Power is measured in watts and you can calculate it by multiplying volts and amps. A closer look at the pack design offers some insight. It stands to reason that if both battery packs deliver 18 volts, it shouldn’t affect the power, just the runtime. 5.0Ah Power Boost: 25.88% Faster Drilling Battery Amp Hours Affect Power, But Why? Here again, the 5.0Ah battery showed its ability to deliver higher power to finish the task, taking 11.26 seconds compared to the 2.0Ah’s 14.60 seconds. The last test we ran was with a 2 9/16-inch Switchblade, calling on a much greater level of power from the drill. We started testing how much battery amp hours affect power by drilling with 1-inch Bosch Daredevil High-Speed Auger Bits. Drilling through 5 layers isn’t exactly a real-world application, but it evens out issues that come from hitting knots or other inconsistencies in lumber. We like using stacked OSB subfloor as a testing material because of its consistency. Makita 18V LXT 2.0Ah vs 5.0Ah Battery Comparison 2.0Ah Packĭo Battery Amp Hours Affect Power? High-Speed Test: 1-Inch High-Speed Auger Bit Read more about the relationship between voltage and amp-hours. In general, higher amp hours mean more runtime and higher voltage means more power. So in addition to having double the cells, the 5.0Ah battery also has a higher energy density in each one. They’re both 18650 sizes, but with different energy densities. That’s because they’re using different cells. You see, the 5.0Ah pack actually has more than double the amp hours of the 2.0Ah battery. That keeps the voltage at 18 but doubles the amp hours to 5.0. The 5.0Ah pack uses two rows of battery cells attached to each other with a parallel connection. The Makita 2.0Ah battery uses just a single row of 5 cells. Each cell contributes 3.6 volts (4.0 volts Max) and the series connection between them brings it to a total of 18 volts (5 x 3.6). 18V and 20V Max batteries both use 5 cells per row to reach 18 nominal volts. ![]()
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