Quite simply, for more time-consuming projects (such as laying decking), where you will be relying on your cordless drill driver to run for longer between charges, WONKEE DONKEE recommends that you select a battery with a higher amp hour rating (or consider purchasing a spare battery to use in the tool while one is charging).
Batteries with larger capacities are often used by workers in the construction industry, who don’t want their tools to be out of use during the workday.
If you only want to use your cordless drill driver for less time-consuming tasks (such as fitting hinges to cupboards), or if it doesn’t matter how often you have to recharge the battery, then select one with a lower amp hour rating so you are not paying for something you don’t need.
Battery capacity summary
A battery with a higher Ah rating has a larger capacity and will run for longer between charges compared to a smaller capacity battery doing the same task.
However, a tool with a larger battery capacity is likely to be more expensive.
