# Quick Answer: Can I Charge 12v Battery With 15v Charger?

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

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 use a 15v power supply on a 12v?

Not very familiar with electronics. the 15v (i guess its dc) will power a 12v ozone device. I read that things need to have the same polarity, same v, but varies MA is fine. The voltage should match and as long as the power supply has at least the amperage required by the device you should be fine.

## What happens if I use the wrong voltage adapter?

Voltage too high – If the adapter has a higher voltage, but the current is the same, then the device will likely shut itself off when it detects an overvoltage. If it doesn’t, then it may run hotter than normal, which can shorten the life of the device or cause immediate damage.

## Can a completely dead battery be recharged?

A car battery is considered discharged when the voltage drops below 12 volts. While your vehicle’s alternator can keep a healthy battery charged, it was never designed to completely recharge a dead car battery. … Most of the time, you don’t even have to remove the battery from your vehicle.

## Is it better to charge a battery at 2 amps or 10 amps?

Consequently, when trying to charge a larger battery at that rate, it will take a very long time and the battery may discharge at a greater rate than the 2-amp charge can provide. It is better to charge a deep cycle battery at a higher charge rate like 6-amps, 10-amps or higher.

## How long does it take to charge a 12 volt 7ah battery?

approximately 4.5 hoursFor example, to fully recharge a 12 Volt 7 Amp Hour (12V 7Ah) SLA battery using a 12V 1.8Ah charger would take approximately 4.5 hours if the battery is fully discharged.

## At what voltage is a 12 volt battery considered dead?

Resting fully charged 12-volt batteries are around 12.8-12.9 volts, and flat dead ones are at 12.0 volts, so 12.4 volts on a resting battery means it’s about 50% charged.

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

Obviously it is safe to charge a 12V battery with a 13V 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.

## What is the maximum voltage to charge a 12v battery?

Multi-stage Battery Charging A typical 12-volt lead-acid battery must be taken to approximately 14.2-14.4 VDC before it is fully charged. (For 24 volt systems, double these figures.) If taken to a lesser voltage level, some of the sulfate deposits that form during discharge will remain on the plates.

## Is it OK to use a power supply with higher voltage?

2 Answers. Higher current (A) is okay because the device won’t use as much, but higher voltage (V) is going to “fry” it. Conversely, lower voltage is unlikely to cause damage since the device simply won’t have enough power, but lower current can cause trouble because the power supply cannot provide enough.

## Can I use a 12v power supply on a 10v?

In most cases, you cannot use a 12V adapter to power a 9V guitar pedal. Using a 12V adapter on a pedal designed to only handle 9V can completely destroy it. There are some guitar pedals built to handle voltages higher than 9V. Those pedals will work perfectly fine with a 12V adapter.

## Can I use 19v charger for 12v battery?

NO you cannot charge your 12V AGM battery directly with a 19V Laptop power supply. You need a battery charger. … So your fully charged state is about 13.8 – 14.5V. Putting two batteries in parallel does not change the voltage required to charge them it simply increases the current capability (increased Ah rating).