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Add to SafariWhen comparing Tenergy TN438 vs Nitecore D2, the Slant community recommends Nitecore D2 for most people. In the question“What are the best rechargeable AAA battery chargers?” Nitecore D2 is ranked 1st while Tenergy TN438 is ranked 3rd. The most important reason people chose Nitecore D2 is:
The maximum charging current of this battery charger is 1000 mA. It can charge a massive 18650 (3000 mAh) battery in 3 hours.
Specs
Question Ranking
Pros
Pro It can charge a lot of batteries at once
This battery has 16 independent AAA/AA-sized charging bays that allows it to charge up to 16 batteries at the same time in any possible arrangement.
Pro Simple and informative interface
The interface consists of two large LCD screens and a refresh button. The LCD screens show the current status of each individual battery, whether they're charging/discharging or if the battery is already fully charged. The 'Refresh' button activates the refresh charging cycle (the batteries are fully discharged, before charging begins).
Pro Easy to use
The charging process is dead simple. Simply connect the adapter to the charger, plug the charger into a household electric outlet and insert the batteries into the battery compartment. Charging will start automatically.
Pro It knows when to stop charging
This charger automatically detects the end of the charging process by measuring battery temperature. Once the battery hits the ‘perfect spot’, when it’s already fully charged, yet not overcharged, the temperature of the battery increases. This temperature increase signals the charger that the charging process is complete.
Pro Can be used inside vehicles
Besides the regular 100 - 240 VAC adapter, you will also receive a free 12 V car adapter. It makes this unit a decent choice for those who needs a battery charger while driving.
Pro Good for fast charging
The maximum charging current of this battery charger is 1000 mA. It can charge a massive 18650 (3000 mAh) battery in 3 hours.
Pro It can charge almost any standard battery
With this charger, you will be able to charge almost any standard household battery. It supports all the regular NiCD and NiMH batteries, such as AA, AAA, AAAA, C, and D, and you can also charge various Li-Ion and IMR batteries.
Pro You can monitor the charging process using a large LCD screen
This battery charger has a large, high quality, crystalline LCD display. The display is used to help set up the charging procedure and show the current charging status.
Pro Good for charging overnight
This charger is perfect for those who prefer to charge their batteries during the night. Battery chargers usually have a bright interface made of multiple LEDs or an LCD display. When used at night, such displays can generate lights bright enough to interfere with your sleep. This charger has a night mode to dim its screen and prevent this issue.
Cons
Con It cannot charge Lithium-Ion batteries
You'll need to consider buying a separate charger for your lithium-ion batteries, since this unit can only charge NiCd and NiMH batteries.
Con It cannot do fast charging
There's no way to change the charging current of this unit, therefore it's not good for situations where you need to charge a battery in 1 or 2 hours, which could be done by applying a high charging current. The charging currents for AA and AAA batteries are set to 500 mA and 250 mA correspondingly. Even though these currents are adequate, it will take approximately 4 hours to charge approximately 4 hours to charge a standard 2000 mAh AA battery or a standard 1000 mAh AAA battery.
Con Can’t charge more than 2 batteries at once
The small charging capacity is the biggest downside of this unit. Therefore, this might not be the correct option for those who require higher charging capacity. However, this charger has a 4 bay alternative: the Nitecore D4, which has exactly the same technical specifications, except it comes with 4 battery bays.
