Nutool 24V Sabre Saw

[OnOff]

Bought a cheapo NuTool 24V cordless sabre saw on a whim at Makro more years ago than I can remember. It was silly money at the time (£20 rings a bell) on one of their deals so when I eventually got round to getting it out of the box and it didn't work I shoved in in with the rest of the "must fix it one day" stuff.

Using the Makita 110V sabre today and thinking how handy a cordless would be for the odd job and I dug the Nu Tool out of the garage. Tried the 24V battery in the charger and nada. No lights nothing. The charger states the output on the label at 24VDC, 0.8A but I'm only  seeing 12 / 13V DC at the +/- terminals on the charger. Will post of some pics of the guts of it when home but no apparent burn marks or blown caps etc. Diodes in the rectifier maybe?

 

[Sidewinder]

It may only provide charge voltge with a load, such as the battery connected, so a few thin bits of wire stuffed in to measure the terminal voltage with the battery fitted.

 

[ProDave]

After that period, the battery will be completely flat.

Try and charge it on a bench power supply or whatever you can cobble together to get some power into it.

 

[OnOff]

It may only provide charge voltge with a load, such as the battery connected, so a few thin bits of wire stuffed in to measure the terminal voltage with the battery fitted.

Cheers for that.

On load as you suggest and I get 24VDC at the charger. Guessing the battery pack itself is duff as I can "jam" an 18V battery in off of another "no name" tool and the saw works fine. Pack consists of 20 1300mAh NiCad sub-C cells. A family friend runs this outfit, Vapextech so I might tap him up for a quote for some Ni-MH cells:

http://vapextech.co.uk/

 

[Sidewinder]

We could do with another sponsor Onoff, see what he thinks!