An electric screwdriver uses a motor to drive screws, replacing manual wrist effort with consistent rotational power. They range from compact 3.6V units for light assembly to 12V models that rival a drill/driver for torque.
Corded vs Cordless
Corded electric screwdrivers are rare today - almost all consumer and professional models are cordless with rechargeable lithium-ion batteries. Corded models still exist for industrial assembly lines where constant uptime matters and battery swaps cost productivity. For everyone else, cordless is the standard.
Voltage and Torque Comparison
| Voltage | Typical Torque | Weight (approx.) | Best For |
|---|---|---|---|
| 3.6V | 3–5 Nm | 0.3–0.5 kg | Light assembly, furniture flat-packs, eyeglass repairs |
| 4V | 5–6 Nm | 0.4–0.6 kg | General household tasks, light switch plates, cabinet hardware |
| 7.2V | 8–10 Nm | 0.5–0.8 kg | Medium-duty assembly, drywall outlet covers, appliance repair |
| 8V | 8–12 Nm | 0.6–1.0 kg | Heavier household tasks, hinge installation, deck fixtures |
| 12V | 12–30 Nm | 0.8–1.2 kg | Heavy assembly, approaching drill/driver territory |
For most household tasks, a 3.6V or 4V electric screwdriver is all you need. Only step up to 8V+ if you regularly drive screws into hardwood or need to handle #10+ gauge screws.
Electric Screwdriver vs Manual
Use a manual screwdriver when you need precise torque feel, when working near delicate components, or when a fastener needs only a quarter-turn adjustment. Use an electric screwdriver when you have more than a few screws to drive, when working overhead (arm fatigue), or when speed matters.
Key Features to Look For
- Adjustable clutch - lets you set maximum torque to avoid over-driving
- Forward/reverse switch - essential for both driving and removing screws
- Built-in LED worklight - illuminates the screw in dim spaces
- Magnetic bit holder - standard ¼″ hex shank compatibility
- USB-C charging - faster and more universal than proprietary chargers
