The 7 Best Rechargeable Battery Chargers of 2023

Best Overall

Energizer Recharge Pro AA and AAA Battery Charger

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The Recharge Pro battery charger from Energizer supports AA batteries as well as the smaller AAA size. To use, insert your batteries into the charger, plug it into a wall outlet, and wait about three to five hours for depleted batteries to fill back to capacity. Charging will automatically stop when the batteries are full to prevent overcharging, which can damage your batteries and reduce their life cycle.

The Recharge Pro also provides quick, basic updates on your batteries' charge status through a set of indicator lights on its front. Red means charging has started; yellow means halfway done; and green means full. You'll also hear beeps when charging stops and starts or if the charger senses a problem with the battery.

One inconvenience is you have to charge batteries either two or four at a time; it can't charge one or three. Fortunately, this isn't too hard to get around, especially with the starter set of four Energizer rechargeable AAs that come included. The Recharge Pro offers substantial value for any home looking to keep a decent number of battery-powered devices going.

Supported Battery Sizes: AA, AAA | Number of Charge Slots: 2 or 4 | Charging Current: 500mA (AA), 220mA (AAA) | Input: 100-240V AC outlet | Status Indicators: Colored LEDs, sounds

Best for Quick Charging

Panasonic Eneloop Individual Battery Quick Charger

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While having spare rechargeable batteries ready to go is ideal, sometimes you find yourself needing to charge a set ASAP. With the Eneloop Quick Charger from Panasonic, you can charge one or two typical rechargeable AA or AAA batteries in about 90 minutes, with a set of three or four taking about three hours. In comparison, the standard version of this charger lists seven hours for a full set.

Adding to the convenience is the ability to charge those batteries in any number and combination, along with LEDs that change color to indicate each battery's status. Eneloop also happens to be a trusted manufacturer of some of the best rechargeable batteries you'll find, so the four included AA batteries offer excellent value.

One potential downside is that charged batteries may come out somewhat warm to the touch due to the extra current that provides the faster charging speed. If charge time isn't a factor for you, a slow charger is less expensive and slightly better for the longevity of your battery cells.

Supported Battery Sizes: AA, AAA | Number of Charge Slots: 1 to 4 | Charging Current: 750mA (AA), 275mA (AAA) | Input: 100-240V AC outlet | Status Indicators: Colored LEDs

Best Budget

AmazonBasics Battery Charger

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If you're looking for a low-cost battery charger with few frills, Amazon offers a usable option under its in-house brand, Amazon Basics. It can hold up to four AA or AAA rechargeable batteries at a time, though, like most budget-level chargers, it can charge only pairs of batteries of the same size.

A red LED light turns on for each side that's charging, shuts off when charging is complete, and blinks to warn of bad batteries. An auto cut-off function helps make sure your batteries don't overcharge.

When you plug the unit into a wall outlet, a green light indicates the USB port is ready to use. You can then plug in a USB cable to charge a smartphone or other device. This port is a convenient extra feature that lets the charger double as a USB wall plug, but note it will not charge batteries while the USB port is in use. You also can't unplug it from the wall and use your batteries as a portable power bank to charge other devices on the go.

Supported Battery Sizes: AA, AAA | Number of Charge Slots: 2 or 4 | Charging Current: 600mA (AA), 350mA (AAA) | Input: 100-240V AC outlet | Status Indicators: Colored LEDs

Best Features

Nitecore SC4 Superb Charger

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For people who use an assortment of batteries and want detailed control of the charging process to maximize their performance, the premium-level Nitecore SC4 Superb Charger may be worth the investment.

It automatically detects the type and capacity of each battery you put in and selects the optimal current. You can also fine-tune the settings manually, such as choosing a current as high as 3A (amperes) for faster charging. You can then monitor detailed information like the battery status and time on the high-definition LCD screen.

In addition to supporting standard rechargeable batteries at AA, AAA, AAAA, C, and D sizes, the Nitecore SC4 also works with a variety of lithium-ion batteries. You can charge cells individually or, depending on the size, up to four at a time.

As a bonus, the SC4 offers USB output, so you can connect devices like a phone or laptop after your batteries are done. You can also buy it in a bundle that includes a battery case and a car adapter.

Supported Battery Sizes: AA, AAA, AAAA, C, D, 18650, many more | Number of Charge Slots: 1 to 4 | Charging Current: Max 3A (x2), 1.5A (x4) | Input: 100-240V AC, 12V DC | Status Indicators: LCD screen

Best for Bulk Charging

EBL 40Slot Battery Charger

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If the typical two- or four-battery charger doesn't cut it for your needs, you can find devices out there with eight or even 16 slots. This product from EBL, though, can charge a whopping 40 AA or AAAs at once, making it ideal for households that use up bulk quantities of batteries regularly.

The charger is like a case you can fold up, with convenient handles that make it easy to tote around. Each half has 20 battery slots and receives power from its own input port; the included power cable plugs into one wall outlet and splits up to power the two sides. This arrangement allows you to plug in just one side if you're not using both. You'll need to charge in even pairs of batteries rather than odd numbers.

Helping you keep track of all your charging batteries are lights for each pairing that change from red to blue when a battery is ready. There are even total USB output ports for charging other devices simultaneously.

Supported Battery Sizes: AA, AAA | Number of Charge Slots: 2 to 40 (in pairs) | Charging Current: max 200mA (x20) | Input: 100-240V AC | Status Indicators: Colored LEDs

Best Design

Powerowl Rechargeable Battery Charger

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The unique circular design of Powerowl's 16-bay charger makes it an elegant way to blend functional electronics into modern decor. While it may not save as much space as more compact chargers, it does allow you to plug in as many as 16 AA or AAA batteries one by one, with a small light for each battery to indicate its status.

The design also includes practical advantages, like vents built into each bay to keep temperatures lower while charging is in process. Overheating shouldn't be a big problem anyway, as the charge current is on the low side compared to other home chargers. You'll typically be leaving it running overnight to get multiple standard AAs to full capacity.

The latest version of the product lists a new feature meant to detect and automatically repair damaged cells, but actual performance will vary.

Supported Battery Sizes: AA, AAA | Number of Charge Slots: 1 to 16 | Charging Current: 200mA (AA), 150mA (AAA) | Input: 100-240V AC outlet | Status Indicators: Colored LEDs