Tenergy TN141 2 Bay 9V Smart Charger with 2 Pack
Quick take
The Tenergy TN141 is a compact, micro-USB powered 2-bay 9V NiMH charger designed for topping up 9V rechargeable batteries with clear per-bay LED status lights. It is a good fit for shoppers who use 9V batteries in devices like smoke detector backups, testers, or other moderate-drain electronics, but it comes with a practical tradeoff: 250mAh capacity, so it is not the best choice for very high-drain equipment.
Pros and cons
Pros
- Two independent charging slots with LED indicators to show charging and completion status per battery
- Micro-USB powered charger design, convenient for modern chargers and cables
- Charger supports independent channel behavior when inserting each 9V battery
- Includes two 9V NiMH rechargeable batteries (250mAh) so you can start charging right away
Cons
- Capacity is limited to 250mAh, so runtime depends heavily on your device’s power draw
- Charging time is on the order of a couple hours for the included batteries, which may be inconvenient if you need a fast swap
- LED brightness may be fairly subtle, so you will want to check the indicators in a well-lit area
What buyers think
Buyer-review evidence is generally consistent on a few decision-relevant points. The charger is described as simple to use, compact, and effective at recharging 9V NiMH batteries, with LED status lights that help confirm when a battery is charging or not inserted correctly. Many comments also highlight the value of switching from disposable 9V batteries, especially for households or devices that use 9V batteries frequently. Some feedback notes that the LED indicators appear dimmer than expected on at least one model experience, which is more of a usability preference than a functional failure. Overall, the review pattern supports the idea that this set is reliable for routine 9V NiMH recharging, with the biggest variable being whether 250mAh batteries match your device’s runtime needs.
Key features and specs that matter
2-bay charging with independent status
The TN141 charges two 9V NiMH batteries at a time using separate channels, each with its own LED indicator. That is useful if you only need to recharge one battery, or if you want quick visual confirmation of whether each battery is charging, complete, or inserted improperly.
Micro-USB power input
Instead of a bulky barrel connector style, this charger uses micro-USB for power. In practice, that can make it easier to find the right cable or power adapter you already have at home or in a work bag.
Battery type and capacity
The included batteries are rechargeable 9V NiMH cells rated at 250mAh. NiMH is a solid choice for many everyday 9V devices, but capacity is the limiting factor for runtime. If your device drains batteries quickly, you may find that you need more frequent recharges even with rechargeable NiMH.
Charging behavior and operating range
The charger output is specified as 11.4V, with a charge current rating of 100mA per bay (2 channels). It is also designed for operation in a typical indoor temperature range (32°F to 104°F, 0°C to 40°C). As with most NiMH chargers, proper charging habits and avoiding heat help protect long-term battery life.
Pros and cons in real buyer terms
Best for
- 9V devices used regularly in a household, where replacing alkaline 9V cells gets expensive
- Shoppers who want a straightforward two-slot charger with per-bay LED feedback
- People who prefer micro-USB powered accessories for easier setup with existing cables
Who should avoid it
- Anyone using a high-drain 9V device that demands longer runtime between charges
- Shoppers who need same-minute “instant” battery swaps, since charging is measured in hours
- Buyers who strongly prefer very bright, easy-to-read indicator lights in low-light conditions
Is the Tenergy TN141 worth it?
This set makes the most sense when you already know you use multiple 9V batteries and you want a charger that is easy to live with. The independent 2-bay design and LED status indicators reduce guesswork, and the included batteries let you start right away. The main reason to pause is battery capacity and charging time. If your 9V device is power-hungry, you may need to recharge more often or consider a different capacity-focused rechargeable option.
If you are ready to replace disposable 9V cells with rechargeable NiMH, you can check the latest availability and price here: Buy on Amazon.
Alternatives to consider (by shopping needs)
- If you need more runtime: look for 9V rechargeable NiMH options with higher mAh ratings than 250mAh, since capacity is the biggest predictor of how long batteries last between charges.
- If you often recharge more than two batteries: consider chargers with more bays, so you are not limited to charging only two at once.
- If you prefer a different power style: prioritize chargers that match your preferred input type, like USB-C or standard wall adapters, depending on what you already have.
Price and availability
The set’s price can fluctuate over time. It is currently positioned as an affordable starter bundle for rechargeable 9V NiMH usage, and it can be more cost-effective than buying disposable alkaline 9V batteries repeatedly if you use 9V batteries regularly.
FAQ
How long does it take to charge? Charging time is listed as about 2.3 hours for the included batteries.
What power input does the TN141 use? It uses a micro-USB port for charging power.
Does it charge two batteries at the same time? Yes, it has two charging slots with independent LED indicators per bay.
What battery type is included? The package includes 9V rechargeable NiMH batteries rated at 250mAh.
Will this work with my device that uses 9V batteries? It is intended for standard 9V rechargeable NiMH cells, so it should be compatible with devices that accept standard 9V battery form factors.
Specifications
| Product Title | Tenergy TN141 2 Bay 9V Smart Charger with 2 Pack of Premium 9V NiMH 250mAh Rechargeable Batteries |
|---|---|
| Category | Electronics > Household Batteries, Chargers & Accessories > Battery & Charger Sets |
| Brand | Tenergy |
| Manufacturer | Tenergy |
| Model Number | 90261 |
| Color | White |
| Item Weight | 1.6 Ounces |
| Product Dimensions | 0.63"D x 1.02"W x 1.89"H |
| Output Voltage | 11.4 Volts |
| Input Voltage | 240 Volts |
| Battery Charge Time | 2.3 Hours |
| Current Rating | 200 Milliamps |
| Amperage | 200 Milliamps |
| Compatible Devices | Camera, Controller, Radio |
| Connector Type Used on Cable | micro USB |
| Number of Ports | 2 |
| Item Dimensions D x W x H | 0.63"D x 1.02"W x 1.89"H |
| Specification Met | UL, CE, FCC |
| Mfr Part Number | 90261 |
| UPC | 844949022163 |
| Warranty Description | Tenergy 1 Year |
| Unit Count | 3.0 Count |
Available variants
Size
- Charger + 4 Pcs Premium Batteries
- Charger + 2 Pcs Premium Batteries
- Charger + 2 Pcs Centura Batteries
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