NO you cannot charge
your 12V AGM battery directly with a 19V Laptop power supply. You need a battery charger. The laptop power supply IS NOT a battery charger, it is a fixed voltage SMPS power supply.
Can I use 12V charger for 19V laptop?
Portable computer Can an ac 12V adapter replace an ac 19V adapter?
No No No No No No
To expand the response in Taes, no, no, no. If you do not use the appropriate voltage adapter and amplifier the battery will not be charged, and the laptop will be very unstable, if it works at all.
Can I charge my laptop with a 12V charger?
A
pure sine wave inverter
works just fine with laptops, but even so, inverters aren't very efficient for charging laptops. An inverter steps up your 12V to 220V (or 110V), and then the laptop charger will step the power back down to 18.5V, 19V, 20V etc.
Can a 12V charger charge a 20V laptop?
If your laptop requires 20V input, it may well have a 14.8V Battery configuration. If it does, then
12V input won't work very well
, as the internal battery will have to be basically drained flat before you can drawn any current from your external power.
Can you charge 18v battery with 12V charger?
Theoretically, you can charge your car battery
with a 12V power supply
. … For a car battery to be good enough for use, it will need to read at least 13.8V. So if you are charging it with a 12V power supply, you can only get as much as 12V in the battery. It won't charge it higher than 12V.
Can a laptop run on 12v?
Laptops are ideal because
the battery will charge off the 12v
and then provide the proper 120v to the computer. The laptop runs off the battery all the time, and the AC charges the battery. So the laptop battery would be the intermediary and there shouldn't be an issue.
Can I charge laptop with phone charger?
Most likely, your cell phone charger has a USB Type A connection, too. Unfortunately, while you can use Type A to power smart devices,
you can't use it to power your laptop
.
Is it OK to use a lower voltage charger?
Voltage
too low
– If the voltage on an adapter is lower than the device, but the current is the same, then the device may work, albeit erratically. … Usually, an under-voltage condition won't cause damage or shorten the life of your device.
How do I charge my laptop with a 12 volt battery?
However, to answer your question –
yes you can
. There's any number of 12v laptop chargers on eBay for a few quid. They are in effect a mini inverter converting the 12v input to an output of typically between 15v and 24v.
Can you charge a 16v battery with a 12V charger?
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.
How can I charge without a charger?
- Use a USB Port.
- Charge With a Battery Pack.
- Hand-Crank Chargers for Emergencies.
- Use a Solar-Powered Charger.
- Charge With a Car Charger.
- Wireless Chargers for Easy Charging.
How long can a 12V battery run a laptop?
A car battery can charge a laptop. But How Long Can a Car Battery Power a Laptop? When a car battery powers a laptop for 6.5 hours, a laptop powered by 45 watts can run for 5.1 hours, and a laptop powered by 60 watts can run for
3.8 hours
when equipped with an inverter.
How many volts does it take to charge a laptop?
Most laptop chargers are rated at
19 volts
. The extra voltage a charger has over a battery is so the charger can simultaneously power the laptop and charge the battery (if they had the same voltage rating the charger would only have enough power to run the laptop).
Can you run a laptop off a cigarette lighter?
Your vehicle also must have a working cigarette lighter, which is usually near the car stereo area. Once you obtain the appropriate adapter for your laptop, charging the computer with your running motor vehicle is a simple task. Keep in mind
you won't be able to charge your laptop
if the car's engine isn't running.
