Using a 5.0Ah battery with the Ryobi R18PD3, you can drive up to 1550 4 x 32mm wood screws on a single charge. Charger sold separately. Features: We've already covered amps. If we continue our river-in-the-canyon analogy, volts are like the pressure of the water through the canyon, the force pushing the current through. If you hook something up to the wrong form of electrical delivery, it won't end well for your devices. Amp-hours, or Ah for short, are a unit of measure for a battery's energy capacity. This rating tells us how much current a battery can provide at a specific rate for a certain period. Those batteries with larger voltage sizes are heavier than smaller voltage batteries and that is always a consideration for manufacturers depending on the actual use of the tool.

Even though the Amp=-hours doesn't automatically mean the battery is more powerful by the numbers, sometimes it can equate to more power. In a higher Ah battery, the number and density of cells supplying the current and the heavier gauge of the conductors and components involved allow more current to move with less resistance.

A reliable and durable lithium battery

Powerful 5.0Ah Lithium+ battery gives more power, longer runtimes and better durability than previous Ryobi® lithium technologies

It's better to size up than to run the risk of undersizing. You don't want to run out of power on accident because you chose a 200Ah battery when you needed a 250. Does a higher Ah battery mean more power? IntelliCell™ technology monitors and balances individual cells to maximise run-times, storage life and safety Electricity is broken down into three standard units, resistance (R), voltage (V), and current (I). Voltage is measured in volts, resistance in ohms, and current in amperage.The complete list of charging times for the ONE+ 5.0Ah Battery when used with compatible ONE+ Chargers.