Black & Decker CLM3820

Troll

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Apr 27, 2019
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Hi,

I have Black & Decker CLM3820 without original Li-ion 36V battery, so I decided to change it to 3x12V lead battery.
On the lawn mower is four clips/contacts (two bigger and two smaller) for battery connection - on the left side should be + and on the right side -
So it was not enough to connect plus and minus only - where should I connect these two smaller clips/contacts?

Best regards
 

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tom3

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Am I reading that label right, 96 db noise rating on an electric mower? But I like the reuse of the mower with conventional batteries, maybe 1/2 the cost of the OE Li-ion pack?
 

bertsmobile1

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Am I reading that label right, 96 db noise rating on an electric mower? But I like the reuse of the mower with conventional batteries, maybe 1/2 the cost of the OE Li-ion pack?
When the CSIRO was researching mower noise they found that most of it comes form the blades.
That was a surprize to many and the "quiet " Victa Vortex has a really funny shaped blade holder.
They sold the exact same mower all over Europe as the Mustang with the standard blade holder on it
And I have tried swapping them over and sure enough a Mustang holder on a Vortex is a lot lot noisier than a Vortex blade holder on a Mustang.
And that is even allowing for the fact that in order to reduce engine noise the Vortex idles at 3200 rpm & the Mustang at 36000 rpm.
 
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