As zxr.I believe the batteries need connecting in series, not in parrallel.
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i put it together quickly in photoshopUPDATE Ok
I've just done the test I mentioned and the way I've shown will give 18v,unfortunately Rosie the other way as I suspected only gives a longer lasting 9v output.
I think the Halo's do work differently hence the confusion,ok
ZX where you get a prutty little diagram like that....
Spot on ZXR, 18V of lovlinessI believe the batteries need connecting in series, not in parrallel.
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