# Can I use a 20v on a 12v?

## Can I use a 20v on a 12v?

These smaller batteries only fit on tools labeled as 12v MAX, and vice versa. 20v MAX and Flexvolt batteries are not only too powerful, but they are physically too large for the receptacles on these pint-sized devices.

## Can you start a car with a 20 volt battery?

You’ll need a fully charged battery from a drill or other power tool. I used 14.4v battery. Batteries between 12v – 18v should work just fine. Some people even reported using 20v batteries with great success, but I wold not go that high.

What happens if you charge a 12v battery with 20v?

It will drop down to about 15 volts when loaded, which is good for charging a 12 volt battery. You would need 4 of these, wired in parallel to charge your battery at a little less than 30 amps. This means using a charge controller rated for at least 30 amps.

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### How do you convert 20v to 12v?

You can use a resistance in series with 20-volt source to drop down the voltage to 12 volts. You can use a resistance in series with 20-volt source to drop down the voltage to 12 volts. You can drop down the voltage by use of 7812 regulators or by Zener diode voltage regulator.

### What does 12v 20v mean?

The main difference between 12v, 18v, and 20v tools is their power; the higher the voltage of the tool means the more influential the tool is, so here the voltage is 12, 18, and 20 volts, indicating the 12v tool has less power compared to the 18 and 20-volt tools.

Can you jumpstart a car with a cordless drill battery?

#### Can you use a Dewalt battery to start a car?

Powered by DEWALT tool batteries, including 20V MAX and FLEXVOLT (not included), this portable battery booster connects directly to your vehicle battery to get things started. And with no batteries to charge, you can leave it in your car, van or pickup truck until you need it.

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#### Can you charge a 12V battery with an 18v charger?

Too many volts can damage your battery. This should have a charge controller between it and the 12v battery. That would keep it around 13-14v see less You are correct; 18vdc is too much voltage for charging your car battery.

Can you jumpstart a 12V battery with a 24V battery?

Unless the 24 volt has two-12 volt batteries in series to work from, you don’t. There could by a ‘shade-tree’ workaround if the terminal connectors are externally accessible, but it would be a ‘bubba’ workaround for sure. It’s easy. A 24V system is 2 12v batteries hooked up in series.

## Can I charge 2 12V batteries in series?

Series Batteries. Charging time will be the same as charging a single battery. Charge more than five batteries by connecting one 12-volt battery charger across each battery in the series, as if each battery were the only one being charged. Charge all the batteries at the same time.