Question: what is the difference between vax blade 3 and 4?
Answer: What is the difference between the Vax Blade 3 and Vax Blade 4? The Vax Blade 3 comes with a 3.0Ah battery and the Vax Blade 4 has a 4.0Ah. The unit Ah stands for amp hours so it is the amount of amperage the battery can pack per hour – the Vax Blade 4 therefore has more power for a longer time.