Can I charge my 12V battery with a 19V charger?

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.

How many volts do you need to charge a 12 volt battery?

12.9 volts
A: A 12V car battery can be safely charged over a range of voltages. It needs at least 12.9 volts to charge, but at this voltage the charge rate of an automobile battery is very slow. A car battery can be charged safely at high voltages as long as the battery is not fully charged.

Can I charge a 12 volt battery with 15 volts?

If you use a 15 volt charger on a 12 volt battery it will work no matter what type of battery it is. But charging will be very fast, the battery will get hot, depending on the type it could get very hot or even explode! So if you do this, that is, use the 15 volt charger on the 12 volt battery.

How long does it take to charge a 12 volt battery at 1 amp?

A 12-volt battery could take up to 12-24 hours to charge fully. When recharging your battery, remember that if it gets too hot while you’re charging it, you need to stop charging. It should not get too hot above 125 Fahrenheit. Ideally, slow charging your batteries is the best option.

How do you convert a resistor from 12V to 19V?

Find out the current demanded of the 12 v load. The simplest way is a 12 v battery and a resistor from its positive terminal to the 19 v positive supply. Connect the load accross the battery. And the other terminal of the 19 v to the other terminal of the battery… .

What voltage is too low for a 12 volt AGM battery?

The truth is that any lead acid battery, be it a Gel Cell, AGM or flooded batteries such as DCBs, should be cut-off at 11.6 volts. Not doing so increases the risk of damage to the battery and if taken down deep enough into the batteries charge, will ruin the battery.

Can I use 14V adapter for a 12v device?

You’ve not mentioned what the device is, but I’d say the answer to your question is: Yes you can. 14 V is not excessively high so all should be fine. More over, once you connect the device to the adapter (start drawing current), the voltage will probably drop somewhat, depending on how much current your device draws..

Can a 5V charger charge a 12v battery?

No, u can’t run a 12V motor on 5V supply because 5V supply can not provide much current to motor to rotate.

What size resistor do I need to run a 12V led?

So to run a small LED off of 12 volts we need to use a 500 Ohm 1/2 Watt resistor. Enter any Starting Voltage, and then the Needed Voltage and finally the Current Draw (in AMPS) in the fields above then press CALCULATE to find other values.

What size resistor do I need for a 1 4 watt?

Typical sizes for small resistors are 1/8 Watt, 1/4 Watt, 1/2 Watt, 1 Watt, and so on. So in our case a 1/4 Watt (0.25) might be on the small size, but a 1/2 (0.5) Watt resistor should be fine. Using a larger Wattage resistor is almost always OK.

What size resistor do I need for a 9v battery?

If we want to run one LED off of a 9 V battery, that means we have to take up a whopping 7.2 V with our resistor, which would need to be 288 Ω (or the nearest convenient value: 330 Ω, in my workshop). 9 V (power supply) – 1.8 V (yellow LED) = 7.2 V

What type of resistor is used in a 12V battery?

A battery of 12 V is connected to a series combination of resistors 3Ω, 4 Ω, 5 Ω and 12 Ω. How much current would flow through the 12 W resistor?