image from manufacturer
Some users say that the “CB” refers to “Carrying Bag” while some said that “CB” stands for “Charging Base”.
I wrote to Black & Decker to ask the question, and they replied that there is no difference between PHV1800 and PHV1800CB.
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If you own these 2 Black & Decker DustBusters and know more difference between them, please share below this post to help others to make an appropriate purchasing decision, thank you.