/diy/ — Making cordless chainsaw wired

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I think a 100w 18v power supply wired to chainsaw battery terminals should do the trick while completely bypassing any charging circuits, thing is I don't know how much the chainsaw is drawing under load

>>2995436
Maybe you should run stupid ideas by Grok before /diy/. These things need at least 20A 18V to run reasonably well, bump it up to 40A if you don't want it to bog down.
>butt the battery
When you're running off a PSU, you have no buffer for high peak current and the thing bogs down.

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what happened to you $3 100a chinkamp power supply from your retarded poasting a month ago?

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i solved it for you

Just get a gas chainsaw.
Otherwise you're going to end up cutting the cord and killing yourself

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First buy one of these to experiment and measure the current, then you can get a 24V power supply of the variety used in 3D printers which are relatively cheap

>>2995623
If only they made an electric chainsaw with a built in generator. Then it could run off gas with zero cords!

>>2995434 (OP)
yes I have converted several tools from cordless to corded. it's really simple.

buy a switching power supply that can output 40 to 50% more than the tool needs to run under light load. if your chainsaw requires 21v at 5 amps then you can get any DC power
supply that puts out 20vdc most switching power supplies can adjust their voltage 2 or 3 volts +/-. you will want a power supply that can put out 3 or 4 times the running amperage for starting loads and for running loads.

then you just need to get the appropriate wire. 12 or 10 AWG wire is a good place to start. larger for longer runs.

if your tool requires some kind of signal besides just raw DC then you are probably not going to be able to do it.

you can build a linear power supply but that would require some brains to figure out the proper transformer, and how to build a linear power supply.

>>2995436
this guy does not know what he is talking about.

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>>2995642
this is the power supply I built to run an old 18v drill someone gave me, and a 18v pipe cutter band saw that I use as a desk metal band saw.

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>>2995644
here it is built on a test fixture with the band saw.

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>>2995645
here is the bench mount.

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>>2995646
one of my switching power supplies I use top power some old cordless makita tools.

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>>2995647
one of the old makita tools I converted to corded for the above power supply, and 2 old batteries that I turned in to home made adapters to use makita batteries.

>>2995434 (OP)
>There is nothing like this anywhere which is obvious profit tactic
incorrect it is not a nefarious plot by the battery jew, it is just not practical because corded tools exist. anyone doing this is doing it because they want to and not because it saves money.

also calling bullshit on "batteries don't last long" I have makita batteries that are over 10 years old. batteries don't last long if you abuse them, and by cheap chinese clones.

>>2995434 (OP)
>There is nothing like this anywhere which is obvious profit tactic to make you buy more batteries but I don't always need to be cordless dammit and the batteries don't last long
I looked into this about 10 years ago and was surprised it did not exist, even DIY versions.
It is the AC vs DC and electronics/battery management that is the issue, not a conspiracy, unfortunately.