What should I check in an electric screwdriver battery specification?

When checking an electric screwdriver battery specification, buyers should verify the battery chemistry, voltage, capacity, watt-hour rating, runtime, charging time, protection circuit, and battery model.

We recommend checking:

Battery chemistry: usually lithium-ion or lithium-polymer

Nominal voltage: must match the motor, PCB, and charging system

Capacity: normally stated in mAh; higher capacity can increase runtime but also size, weight, and cost

Watt-hour rating: important for battery comparison and international shipping

Battery model and manufacturer: should remain consistent with the approved sample and compliance documents

Runtime: test under a defined torque and speed, not only under no-load conditions

Charging time: confirm how long a full charge takes

Charging current and voltage

Protection functions: overcharge, over-discharge, over-current, and short-circuit protection where applicable

Cycle life: check how well the battery retains capacity after repeated charging

Temperature rise: monitor the battery during charging and continuous operation

Voltage stability under load: excessive voltage drop can reduce torque and speed

UN38.3 documentation: required for lithium-battery transport

SDS/MSDS: may also be requested for shipping or customer documentation

For ToolQeen precision electric screwdrivers, a typical battery specification is 3.7 V / 400 mAh / 1.29 Wh, with approximately 70 minutes charging time and around 120 minutes runtime, depending on working conditions.

For OEM and bulk orders, buyers should lock the battery manufacturer, model, voltage, capacity, Wh rating, protection circuit, charging specification, and compliance documents before mass production. Changing the battery later can affect runtime, torque performance, safety, and existing compliance documentation.