All AA and AAA Battery Chargers are available in different shapes and sizes, meaning that they can hold an array of batteries. Depending on use and personal preference makes the difference when choosing the right battery charger. Do you have large battery consumption habits, or do you go through a few batteries a week / month. The more batteries you use the more batteries you want your charger to hold.
There are many different chargers on the market that hold various amounts of AA and AAA batteries at a time. Just because a charger can hold eight batteries does not mean it can individually charge one battery or five batteries. You must read the packaging to make sure you know how it charges the batteries and how many can be charged. There are single battery chargers on the market, but these are not too popular as they are limited to one battery per charging cycle. Other less used charger holds two batteries simultaniously. The more popular battery chargers are those that can charge four or eight batteries. There are even chargers that can hold more than that! It is advisable to purchase a charger that fits your consumption habits.
Just because a charger has slots that can hold four or eight batteries does not mean you can individually charge your batteries. Typically, AA and AAA battery chargers either charge two, four, or eight batteries at a time. Only a few models of battery chargers actually allow you to charge one battery at a time, while leaving the other slots empty. Be sure to know the minimum and maximum number of batteries that can be charged and buy the charger that suits these needs.
Battery chargers have different adapters. Some can be plugged into a wall; some use a USB port, while others can use a 12V car cigarette adapter. If you plan to travel a lot then it is recommended to get a battery charger that has both an AC and DC Adapter so it can be used in an electrical outlet or in a car. Battery chargers sometimes come with international wall plugs for no additional cost. This is great if you are planning a trip outside your country and you need outlet converters. Make sure that it comes with the converters for the country you are visiting. If you are planning a trip to Australia make sure you have outlet plugs for Australia and not for Europe. Some battery chargers will only include one outlet converter, and this may be for a country you never plan on visiting. You have to keep our eyes peeled for such instances.
This information should assist you in purchasing your new battery charger. Always read the packaging and look at the features to make sure they coincide with what you are looking for. Battery chargers can be a confusing topic, but once you fully understand them it really is not that difficult. Ultimately, it is up to personal preference and needs as to which type of AA and AAA Battery Charger you will need.