Power head string trimmer vs carbon fiber powerload trimmer

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I was wondering if the power head (multitool) string trimmer is more powerful than the carbon fiber powerload string trimmers. Also does anyone know if there is any difference between the two carbon fiber trimmers besides the battery (2.5ah split shaft 5.0ah straight shaft). Is the straight Shaft any more powerful than the split shaft?
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Posted 9 months ago

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Oregon Mike, Champion

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It seems I've read the multi-head system is more powerful, but my memory could be a bit rusty. Difference between split shaft and straight shaft is merely the packaging. The split shaft allows for a shorter box and once the hinge in the middle of the shaft is put together you never take it apart again. 
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szwoopp, Champion

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Agree with mike.
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Is there a noticeable difference?
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I believe the powerhead system is slightly heavier as well, plus the new CF string trimmer has the "powerload" feature, and I don't believe the string trimmer attachment for the power head includes that option.  

I have the powerhead with edger and hedge trimmer attachments. I also have the CF string trimmer.  In my opinion, the CF String trimmer is plenty powerful, so I don't think you are missing out on anything by not getting the power head version, but I don't have the trimmer attachment for the power head system to compare directly.

If you already have the power head the string trimmer attachment may be cheaper than a full bare tool depending upon sales (I got the CF trimmer with charger and 2.5AH battery for $179 due to a good sale over Memorial day, so that was a no brainier over the $149 attachment only...)

I needed the long reach of the powerhead hedge trimmer attachment for the top of an 8' hedge, otherwise I would have gotten one of the handheld hedge trimmers for a lighter weight tool, and the only reason I have the edger is that the edger/powerhead bare tool kit for $129 is the cheapest way to buy the powerhead, but I'm liking the edger a lot!
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Blue Angel, Champion

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The Powerhead string trimmer combo is psycho powerful. For really heavy trimming it’s the way to go.

The 15” trimmers are plenty powerful for ordinary trimming. Unless you are clearing overgrown areas that don’t get regular maintenance the 15” trimmers are more than enough.