Granberg chain sharpener

[King92]

How can i make it run off the mains electric? I dont have a battery to use it with wasnt planning on using it on the job

cheers

[TGB]

Have you got a 12v battery jump pack? That's the way a lot of people run theirs. Charge the pack off the mains, then run the grinder off the pack. If you try running the grinder straight off the mains without a step-down transformer, you'll blow the grinder, if its wires don't melt first.

Edited July 6, 2014 by TGB

[King92]

Nahh i dont have anything like that. Might have to just buy a battery?

[Jimbob87]

Battery jump pack will be more use and there not bad money anymore. Mine has a little compressor which while slow is realy handy.

 

 

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[TGB]

Linked to my first reply:

 

But I don't know how you would do this safely. All of these things I've come across, have been for a specific appliance and supplied with such. It's not just the volts you need to reduce but the amps too.

 

(Watts devided by volts equals amps.) finding out how many amps the grinder needs, is a starting point at least.

 

Jump-packs aren't that expensive and you can still you use it for its primary function if needed.

Edited July 6, 2014 by TGB

[Jimbob87]

http://www.amazon.co.uk/gp/aw/d/B0045EPMHS/ref=mp_s_a_1_3?qid=1404640044&sr=1-3π=SX200_QL40

 

Dunno if link will work but one like this is what i use

 

 

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[King92]

Dont fancy paying that much tbh. Might just wait till one comes around in Aldi:thumbup1:

[Jimbob87]

There is cheaper ones on amazon saw one for 36 quid

 

 

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[Macpherson]

I just use the old battery out of my last car which probably wouldn`t start a car now but it takes enough charge to run the grinder, back street garages usually have piles of them sitting around just find one that still produces a spark and your away, they`ll probably just give you it

[doobin]

FFS, just connect it to a cheapy battery charger. Not rocket science.