# Can I use 2 12V charger on a 24V battery?

## Can I use 2 12V charger on a 24V battery?

You cannot use the 12V charger directly to charge a 24V battery. To do the task you will need a boost converter capable of generating output voltage greater than 24V. Boost converters step up the voltage, keeping the input and output power constant. You cannot use the 12V charger directly to charge a 24V battery.

## What happens if you charge a battery with more amps?

Amperage Provided versus Amperage Required Device may fail, may run or charge slowly, power supply may overheat, may damage the device being charged — all depending on the magnitude of the difference. The amperage provided by your charger must match or exceed what the device being charged requires.

How long should you charge a 12 volt battery at 2 amps?

If you’re using a 1-amp charger and your battery is completely dead (0 amps), it will take 48 hours. However, if you’re using a 2-amp charger, it will take 24 hours. Each amp that the manufacturer rates the charger for will restore one amp in the battery per hour.

### How do you hook up a 12V battery charger to a 24V system?

This requires only one bank of a 12V charger to be attached to the positive terminal of the first battery, and the negative terminal of the second battery. In the second example, to charge a 24V system simply use each bank of the charger on each 12V battery terminal leads.

### What voltage should I charge a 24V battery?

The target voltage for a 24 volt charger for AGM or some flooded batteries is 2.4 to 2.45 volts per cell, which is 28.8 to 29.4 volts.

How do you charge an 8 volt battery?

Using a standard 12 volt car charger, the charger will charge a lead-acid battery to 13.8 volts, or 2.3volts per cell. For an 8 volt battery this is 9.2 volts for a fully charged 8 volt battery. To use a 12 volt charger, connect a 4.5 ohm 10 watt resistor in series with the charger to the battery.

#### When to change Charger from 12 volt to 8 volt?

If everything goes smoothly, you could disconnect the 12-Volt battery charger after half an hour or so and then change to the 8-Volt battery charger. Keep an eye out for excessive gassing and dramatic rises in temperature, shut off the charger once these signs appear.

#### Can a dead 8 volt battery be charged?

The other key to charging the 8-volt battery is that the voltage of the charger must match the voltage of the battery. That is why some people say to put the batteries in a series so that your 12 volt battery chargers can bring power to those dead batteries.

Do you need a resistor to charge an 8 volt battery?

In the usual case, the 12-Volt battery charger would charge to 13.8 Volts but you only need 9.2 Volts for 8-Volt batteries. That is why the resistor is needed because it would reduce the current by 4.6 Volts to match the 8-Volt batteries. The resistor is going get fairly hot so it’s probably wise not to touch it with your bare hand.