I'm actually charging my 12V sealed lead acid battery with a laptop adapter which output is 19V, 2.1A. I'm not sure this will shorted the life of my battery or not, but the battery hold the charge.
I don't have a voltmeter to test the voltage, but the battery can light up a 12V car headlight light bull. So, I guess it work.
no you can not will it not charge the battery to 12volts?ie charge it but not fully
Two 12 Volt batteries connected in series = 24 Volts.Two 12 Volt batteries connected in parallel = 12 Volts.
Can't be to healthy for the power tool either way.
The NiCad battery costs around 45 to 50$.The Lithium Ion battery starts at around 75$.
If,for example, a 12 volt car battery is used to charge an 18volt mobile battery then an electronic oscillator stacking voltages on capacitors via diodes is used. This is called a 'charge pump' or 'Cockcroft and Walton' voltage multiplier.
18 V
although very sensitive to static electricity, CMOS is very stable compared to other (older) technologies. it also can handle wider voltage ranges (standard 3.3volt to 18volt) upto 40volt in some cases. in addition CMOS requires very little current (amps) compared to other technologies (1/1000 of amps required for ttl) the static problem is overcome with good handling practices (always earth your hand and handling equipment to each other)