Tenergy TN480U 8-Bay LCD Display Fast Charger for NiMH/NiCD AA review
Quick take
The Tenergy TN480U is an 8-bay AA/AAA charger for NiMH and NiCD rechargeable batteries that charges each battery independently and shows progress on an LCD. It is a strong fit if you regularly cycle remotes, controllers, and other devices that use rechargeable AA or AAA, especially when you do not always have an even number of batteries. The main caveat is that you must provide the right USB power setup, since the charger requires DC 5V input and faster charging depends on how it is powered.
Pros and cons
Pros
- 8 independent bays with detailed LCD progress, so you can monitor charging status battery by battery.
- Works with both AA and AAA NiMH/NiCD rechargeables, and supports charging multiple batteries at once.
- Designed to avoid the “charge in pairs” limitation, which helps when batteries are not discharged evenly.
- Fast-charging rates are specified (up to 500mA for AA, 250mA for AAA) with negative delta V cut-off.
Cons
- You will need to supply a suitable DC 5V power source (a Micro-USB to AC adapter is not included).
- Charging speed is not identical for AA vs AAA, and AAA will charge at a lower stated current.
- If you only have an uneven count or want maximum readiness, you may still be limited by the 8-slot capacity.
What buyers think
Buyer feedback centers on convenience and per-battery control. Many people like the fact that the charger does not force batteries to be charged only in matched pairs, making it easier to handle odd counts or mixed usage patterns. The LCD status display is repeatedly mentioned as clear and easy to check at a glance. Several users also report that charging behaves as expected, with batteries reaching a full state without obvious overcharging behavior.
There is also a common theme around power quality. Some buyers emphasize that the charger works best when paired with a capable USB power supply, implying that an underpowered adapter can slow things down or prevent the charger from performing at its intended rate.
Overall, buyer-review evidence supports the idea that the TN480U is practical for regular AA/AAA rechargeable users, with the biggest “it depends” factor being how you power it.
How the Tenergy TN480U charger is different
This is not just an 8-slot cradle. The TN480U combines multiple bays with an LCD that provides visible charging progress for what is currently seated in the charger. The charger is compatible with NiMH and NiCD batteries in both AA and AAA sizes, using negative delta V cut-off for termination.
From a day-to-day standpoint, the biggest differentiator is individual handling across bays. That matters if your devices do not drain batteries evenly, or if you often find yourself with a mix of partially drained cells rather than a perfectly matched set.
Charging speed and what to expect
The charger is rated for fast charging at up to 500mA for AA and 250mA for AAA. It estimates charge time based on battery capacity, and it is designed to end charging using negative delta V cut-off.
Because it takes DC 5V input (rated 5V 2A input in the specs), your experience can vary depending on what power adapter or USB setup you use. Some buyers specifically call out that a low-power wall wart can affect performance, so if fast charging is a priority, you will want a solid 5V supply.
Compatibility and battery types
- Battery chemistry: NiMH and NiCD rechargeable AA and AAA
- Battery sizes: AA and AAA
- Termination: negative delta V cut-off
- Battery slots: 8 charging slots
If you use rechargeable AA or AAA only, this model is purpose-built for that routine. If you have other battery formats (like C/D cells or non-rechargeable alkalines), you will need a different charger.
Ports and power setup (the part many people overlook)
The TN480U uses USB power input and supports both Micro-USB and USB-C inputs. It specifies 5V 2A input, and the package includes a Micro-USB cable. A Micro-USB to AC power adapter is not included, so you will need to supply your own wall adapter (or DC car adapter) if you are not already using a compatible USB power source.
There is also a practical note on power sources: if you plug in both ports at the same time, it will take power via the USB-C cable.
Pros and cons recap
Best for: people who regularly recharge AA and AAA NiMH or NiCD batteries, want an LCD to see charge progress, and appreciate being able to charge odd counts without waiting for perfect pairings.
Better to double-check first if: you do not already have a good USB 5V power adapter or you expect the charger to come with an AC adapter. In that case, your setup needs a small planning step.
Who should avoid: shoppers looking for a charger that includes an AC wall adapter, or those who need support for battery types outside rechargeable AA/AAA NiMH and NiCD.
Verdict
The Tenergy TN480U is a solid option for everyday rechargeable battery users who want per-bay visibility and more flexible charging than pair-only chargers. If you are willing to pair it with a capable 5V USB power source and you charge AA or AAA NiMH/NiCD batteries as part of your routine, it is the kind of charger that reduces the hassle of keeping multiple devices running.
Price and availability
Pricing can change by retailer and bundle. Check current pricing and options to confirm what is included with your order.
FAQ
Will this charger work with both AA and AAA batteries?
Yes. The charger is compatible with AA and AAA rechargeable batteries (NiMH and NiCD).
How fast does it charge AA vs AAA?
The rated fast charging current is up to 500mA for AA and up to 250mA for AAA. Actual charging time can vary based on battery capacity.
Do I need to charge batteries in pairs?
No. This model is designed around 8 bays and individual charging status per battery, which is helpful when your batteries are not evenly drained.
What power source does the TN480U require?
It uses DC 5V input via Micro-USB or USB-C. The included package includes a Micro-USB cable, but a Micro-USB to AC adapter is not included.
What batteries is it compatible with?
It is designed for NiMH and NiCD rechargeable AA and AAA batteries, with negative delta V cut-off for charging termination.
Specifications
| Product Title | Tenergy TN480U 8-Bay LCD Display Fast Charger for NiMH/NiCD AA AAA Rechargeable Batteries with Mirco USB and USB Type C Input for AA and AAA Rechargeable Batteries |
|---|---|
| Category | Electronics > Household Batteries, Chargers & Accessories > Battery Chargers |
| Brand | Tenergy |
| Manufacturer | Tenergy |
| Model Number | TN480U Charger |
| Color | Black |
| Item Weight | 145 Grams |
| Product Dimensions | 7"D x 4.4"W x 2"H |
| Output Voltage | 1.25 Volts |
| Input Voltage | 5 Volts |
| Current Rating | 0.5 Amps |
| Amperage | 0.5 Amps |
| Compatible Devices | NiMH/NiCD AA AAA Rechargeable Batteries |
| Connector Type Used on Cable | micro USB, USB-C |
| Number of Ports | 8 |
| Item Dimensions D x W x H | 7"D x 4.4"W x 2"H |
| Specification Met | FCC, CE, CEC |
| Mfr Part Number | 844949031592 |
| UPC | 844949031592 |
| Warranty Description | Charger Tenergy 1 Year |
| Unit Count | 1.0 Count |
Available variants
Size
- Charger + 4xAA & 4xAAA
- Charger Only
- Charger + 8xAA
- Charger + 8xAAA
- PRO 8xAA + Charger
- PRO 8xAA & 8xAAA + Charger
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