Hello Mrs Lehmann, we also have a Dyson V8, which is now doing its job in the cellar. The charging stations do not match. The plug is different and the charging voltage. The V8 charges at 26.1 volts and the V15 at 30.45 volts.
The big advantages of the V15 are:
-Automatic adjustment of suction power (for carpet and hard floor)
-Green laser light on the hard floor roller (dust is clearly visible here)
-The wet mopping function is very easy.

If you have any further questions, please do not hesitate to contact us.

MfG.
Günter