# Can a 12v charger charge an 18v battery?

Category: automotive auto parts
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You can use ANY 18V charger, as long as the Amperage of the charger is equal to, or greater than the device's Input value. The reason, is because the charging Voltage must be identical to the device's Input Voltage, and it will destroy the electronics; too high a voltage, and it will fry it.

In respect to this, can you charge a 14.4 V battery with a 18v charger?

18V is around the right voltage to charge 14.4V batteries from. However, you're probably seeing a charger intended for 18V batteries, which will actually be giving closer to 22-24V, too much for 14.4V batteries.

Furthermore, will a 12v charger charge a 36v battery? Contrary to what others have said, you cannot charge a completely depleted 36v battery to 12v and get a third of the voltage. 3x 10.7v is 32.1v so that is the minimum voltage for a completely 'dead' 36v battery. Your 12v charger will just kill it even deader!

Thereof, can a 12v charger charge a 24v battery?

Re: Charging 24V Bank With 12V Charger As long as there is no 24v circuit, i.e. the batteries are still conencted in series BUT nothing else is connected across them, yes, you should be able to charge each one, one at a time, from a 12v charger.

How can I charge my 18v drill battery without a charger?

Take two small batteries and connect the positive side of one with the negative side of another through the connecting wires. Use your electric tape to secure the connectors in place. Bend the connected batteries in a U shape. Connect the positive side of the series connection to the positive side of the drill battery.

### Can I charge a 5v battery with a 12v charger?

Can I charge a 12V battery with a 5V charger? Presuming that you are talking about a charger as an integrated product purchased off-the-shelf, you cannot. However, if you have a 5-volt source of dc current there are ways to construct charging circuits that can do this, by boosting the voltage.

### Can you charge a 20v battery with a 18v charger?

This adapter will allow people with 18V stem top tools to use the newer 20V MAX batteries. The 20V batteries will not charge on the 18V chargers however using this adapter, so the user will also need a 20V MAX charger.

### What voltage should I charge my 18v battery?

How to Charge an 18V Battery. An 18 volt battery will consist of 15 individual cells with an output of 1.2 volts each. The cells are wired in series as this combines the output voltage from each cell.

### Can you charge a 14v battery with a 12v charger?

So you definitely need a charger having more than 13.2V. So I prefer using a 14V charger to charge a 12V battery. You can also use a boost converter with the 13V charger to increase the output voltage from 13V to 14V. This is the most cost effective way.

### Can I charge a lithium battery with a normal charger?

This voltage for a lithium battery is way too low. At this voltage the lithium battery will have been depleted to approx 10-15% state of charge. A lead-acid charger that can be set to charge no higher than 14.6v can be used for regular charging and then MUST be disconnected after the battery is fully charged.

### Can you use a 24v battery on a 18v drill?

Using 18V cordless tools on 24V battery bank. The 24V is a bit bore than the tools were designed for so it may wear on the tool a bit more but the batteries are around 20V fresh of the charger and you are going to see a bit of voltage drop in your new cables especially with stall currents of around 40A.

### Can I charge multiple batteries with one charger?

Charging Batteries in Series
This means you should focus on the increased voltage and ways to use that to charge multiple 12 V batteries by using, for example, a charger with the same voltage as each battery. For charging 6 volt batteries in series with a 12 volt charger, you can use a single charger.

### What happens if you charge a 12 volt battery with 24 volts?

Yes, if you regulate the voltage down to the right amount. If you just plug a 12 volt a battery into a 24 volt charger it will die in a matter of hours.

### Can you charge 12v batteries in parallel?

When you connect the batteries in parallel, you are keeping the total voltage the same. For example, if you connect two 12 volt batteries in parallel, the voltage of the combination is 12 volts. When you connect multiple batteries in parallel, connect the + of the first battery to the + of the second battery.

### How many amps are needed to charge a 12v battery?

A medium amp output 12 volt charger would be in the range of 20 to 50 amps or so, and be used for many applications using about 100 amp hours of battery and up, or applications with a constant amp load (power supply application).

### How do you hook up two 12 volt batteries to make 24 volts?

Making a 24-volt battery from two 12-volt batteries is moderately simple if you follow a few guidelines.
1. Connect one battery cable to the positive (+) terminal of one of your 12-volt batteries.
2. Connect the other end to the negative terminal (-) of the second 12-volt battery.

### Can you charge a battery with a lower voltage charger?

Yes it will discharge the battery if it was fully charged. Note that if you charge a lithium Ion battery to a lower voltage than the full charge voltage (in this case 4 volts instead of 4.2 volts) you will actually extend the number of charging/discharging cycle life of the battery.

### Can I charge a 24v system with a 12v alternator?

The 24v systems that employ 12v batteries can be recharged with a 12v alternator by simply being plugged in like any other 12v battery. If the 24v system uses an actual 24 volt battery, the electricity will have to pass through a voltage converter before it goes from the 12 volt alternator to the battery.

### Can you use a 12v charger on a 16v battery?

6 Answers. Your 12v adapter would only be able to raise the battery voltage to 12v, but to charge a car battery fully you would need to raise the voltage to 13.8v. The 16v adapter would raise the voltage too high and could cause damage.

### Can I charge a 20v battery with a 12v charger?

Yes, because you need more voltage than the battery terminal voltage. Yes, because you need more voltage than the battery terminal voltage. A 12v battery will need 13-15V to charge with values such as 13.8v or 14.4v being common for float and cycle charging assuming we are speaking about lead acid.

### Can I charge a 48v battery with a 36v charger?

Even then, it won't charge properly - because the 48V charger will still be in constant current mode, so if you cut it at 42V, it won't have fully charged the 36V battery. In addition to the other mentioned issues. OP: Just, no. Do not do this, period, the end.

### How can I charge my laptop battery without a charger?

If your laptop has a built-in USB-C port, then you'll be able to charge your laptop via a USB-C cable - you just have to make sure the cable has a plug adapter (the box-shaped plug at the end of your phone charger than can plug into an outlet). Some laptops, in fact, use a USB-C cable as the primary charger.