| Ahhh you assumed I was in the US when in fact I am in the UK, easy mistake | seeing as I didn't mention it. | | I wish to use the charger on a work site and on worksites we use 110 Volt | power supplies. | The power supplies do not use the US type plugs. That's why I need to know | which is the positive and which is the negative wire.
Work site power in the UK is actually a 55/110 volt split system similary to the 120/240 volt split system in the USA. What that does is gives you 1/4 the voltage relative to ground, but still enough to power heavy duty tools.
Such a power system (60/120) is used in the USA for certain audio purposes where ground noise is an issue. But there are rules that restrict its use because not all 120 volt equipment is compatible.
The USA battery charger MAY cause a ground fault when used. If the frame of the battery charger is wired to the NEUTRAL wire (wider blade), plugging it into UK work site power would energize the frame with 55 volts, and trip your leakage breaker when you touch it, or give you a shock if it fails to.
If the charger has a 3-prong plug, then it MAY work. But be sure to wire the ground in as well.
If it only has a 2-prong plug, check how it is wired inside before trying to use it. It may be best to replace the entire cord with a
3-wire cord intended for the UK 55/110 volt work site system that includes ground, and wire the ground wire to the frame and the TWO hot wires to the transformer and switch w/o crossing to the frame.