I have a firing system with a 12v SLA battery. As most things Chinese it came with no instructions or charger.
It charges via a socket - round hole with a central pin.
No labels tell me which is the + Pos or - Neg part of this socket, so I am loath to plug anything into it as the rest of it is pcb/digital - easily fryable !!
and I cant afford to destroy it this side of Nov 5th.
I have a screwfix freebie digital multimeter - never used one in my life though.
I guess it is not going to be up to much - but will it tell me which part of the socket is negative and positive, so I can decipher what sort of charger to get ? if so - how !
Also - charger - how would I know what polarity a charger is, for example - I have a multi headed charger 3 - 12 v here for mobile phones and suchlike, can I find out the polarity of these too ?
In fact - is there an online multimeter basics guide anywhere ?
Many Thanks
Gerry
It charges via a socket - round hole with a central pin.
No labels tell me which is the + Pos or - Neg part of this socket, so I am loath to plug anything into it as the rest of it is pcb/digital - easily fryable !!
and I cant afford to destroy it this side of Nov 5th.
I have a screwfix freebie digital multimeter - never used one in my life though.
I guess it is not going to be up to much - but will it tell me which part of the socket is negative and positive, so I can decipher what sort of charger to get ? if so - how !
Also - charger - how would I know what polarity a charger is, for example - I have a multi headed charger 3 - 12 v here for mobile phones and suchlike, can I find out the polarity of these too ?
In fact - is there an online multimeter basics guide anywhere ?
Many Thanks
Gerry