20Dec/100
How to choose a cordless drill or impact driver?
It is a few things to consider to find a suitable cordless drill or impact driver.
Technical basics you need to know:
1. What is Volt (symbol: V)? - The volt is the electromotive force, commonly called Voltage.
The higher the voltage number, the higher the Force/Torque will be.
2. What is Ampere-hour (symbol: Ah)? - The amount of energy charge in a battery that will allow one ampere of current to flow for one hour. 3.3Ah capacity Li-ion battery provides 25% more run time than 3.0Ah battery.
3. Battery Types:
NiCad: Nickel-cadmium battery low cost battery type was invented in 1899. Should i say anymore?
NiMH: Nickel-metal hydride battery. Development from NiCad. NiMH batteries have up to 30% more energy capacity than NiCad. However
