Pair of V7s both with similar issues

[HatMan_San]

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Greetings All. Well this sucks. One V7 new battery, brand new brush bar (gifted), runs fine good suctions no cutting out on turbo. Plug in the brush bar and it will spin quit happily for 5 or 6 seconds off the ground, but dead within a spin or two on the floor. Unused out of the box, extension, stair brush etc no difference. Use with a crevis tool until flat no problem.

Second V7 runs perfectly with crevis tool with or without extension. Plug a brush bar in and the bar wont even pretend to spin, not even a nudge, but the main motor rotations slows a tad, so there is clearly a load applied to pcb. Swapped, the tub off the other one and this makes no difference. Both cleaned to within a micron, by full disassembly and air compressor.

Help me Obi Wan, I am bald enough as it is.

[MVacs]

Is it the same floor head you are using with both?

[HatMan_San]

Hi. No I have three different powered brush heads, all of which work perfectly on my neighbors D7.

Thank you

[MVacs]

Is the new battery a genuine one or a cheapo from Amazon or somewhere?