The battery life of a cordless ratchet depends on several factors, including the battery capacity (measured in ampere-hours, Ah), the power demands of the tool, and the specific tasks being performed. Typically, cordless ratchets use lithium-ion batteries, which are known for their efficiency and longevity.
1. **Battery Capacity**: Most cordless ratchets come with batteries ranging from 1.5Ah to 5Ah. A higher Ah rating generally means longer runtime. For example, a 2Ah battery might last around 30 to 60 minutes of continuous use, while a 4Ah battery could last up to 2 hours or more, depending on usage.
2. **Power and Torque**: The power output and torque settings of the ratchet also affect battery life. Higher torque settings and more demanding tasks will drain the battery faster. For instance, using the ratchet at maximum torque to loosen tight bolts will consume more power than lighter tasks.
3. **Usage Patterns**: Intermittent use, such as tightening or loosening a few bolts at a time, will extend battery life compared to continuous operation. Additionally, frequent starts and stops can impact battery efficiency.
4. **Brand and Model**: Different brands and models have varying efficiencies. Some high-end models are designed to optimize power usage, extending battery life.
5. **Environmental Factors**: Temperature and storage conditions can also affect battery performance. Extreme cold or heat can reduce battery efficiency and lifespan.
In summary, while a cordless ratchet's battery might last anywhere from 30 minutes to several hours on a single charge, the actual duration will vary based on the factors mentioned above. For professional use, having spare batteries or a rapid charger can help minimize downtime.