Hi all, I have got a few different battery types that all need charging.
There are different voltages ranging from 3.5 up to 9 volts, they are used to drive small electric ride on toys and similar usage.
They are all sealed dry batteries.
My question is this, do I need to buy a special multi voltage , variable amperage charger OR can I use a Walwart type power supply that allows me to lower and raise the voltage from 12 all the way down to 3 volts.... but the amps remain the same.
I understand about trickle charging batteries as I worked as a mechanic for a few years but my knowledge is limited.
Lastly is there a fundamental difference between trickle charging and Walwart style charging?
I am just worried that I will roast all the batteries and end up having to buy them all again.
Regards Alan
PS I would like a set up using crocodile clips rather than a plug in affair, as all the batteries are different shapes.