Choosing the right extension cord for your battery charger is not as easy as it sounds. The power of the extension cord will determine how fast your battery charger charges.

What Gauge Extension Cord You Need To Use For Your Battery Charger

To know what gauge of extension cord you need to use. Here are some things you should consider:

1. How long is your extension cord?

If you are using an extension cord that is 50 feet or longer, you definitely need an extension cord that has a wire gauge of 12 or higher. The length of the extension cord determines how much current can flow through it. Therefore, you need to use a heavier gauge wire for longer distances.

2. How long will your battery charger be plugged in?

If you are using an extension cord that is under 50 feet and plan on leaving your battery charger plugged in all day or overnight at least sometimes, then consider getting an even higher gauge than if this won’t happen very often.

If power strips or surge protectors are already being used with other appliances, keep in mind that these devices also have limits as far as wattage goes so one more appliance might push things over the edge into having too little voltage reaching the device because there aren’t enough total watts across everything connected together which could cause problems with your battery charger.

3. How much amperage does the device require?

Battery chargers come in different wattages, which means they can range from 12 watts to 30+ watts. Make sure you know what voltage and how many amps are required by the appliance that will be plugged into it because this information should be labeled on both devices for easy reference.

You don’t want anything overheating or getting damaged when using an extension cord, so make sure you use a gauge wire high enough to match its needs without overloading it at any point in time based on these factors.

We hope that this information helps you to choose what gauge of extension cord you need for your battery charger! You can also read our blog about knowing the alternatives for 18650 batteries and how many watts in a 9-volt battery.