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  • Tenergy Advanced Universal Charger TN190 (4 Channel AA/AAA/C/D/9V Ni-MH Charger with LCD Display and USB Power Outlet)
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Tenergy Advanced Universal Charger TN190 (4 Channel AA/AAA/C/D/9V Ni-MH Charger with LCD Display and USB Power Outlet)

by Tenergy
234 customer reviews
| 27 answered questions

Price: $29.99 & FREE Shipping on orders over $35. Details
In Stock.
Sold by Battery Superstore and Fulfilled by Amazon. Gift-wrap available.
  • Recharges 1 to 4 pieces of AA/AAA/C/D Ni-MH batteries and 1 to 2 pieces of 9V Ni-MH batteries. •Recharges batteries in single or group - with 4 individual charging channels for AA/AAA/C/D batteries and 2 individual channels for 9V batteries.
  • Built-in USB outlet (output: 5V DC 500mA) - recharge and power up your personal digital devices
  • Automatic charge and discharge function. Intelligent microprocessor controlled
  • Automatic charging current selection for the different size of batteries. •Powered by an external AC adaptor (100-240V AC) for worldwide use.
  • Unique designed with blue Electric LCD screen to indicate the battery status: Charge, Discharge, Full, Bad. •With backlight button - press it once and the backlight will turn on for 10 seconds under trickle charging mode.
4 new from $29.99
$29.99 & FREE Shipping on orders over $35. Details In Stock. Sold by Battery Superstore and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

Tenergy Advanced Universal Charger TN190 (4 Channel AA/AAA/C/D/9V Ni-MH Charger with LCD Display and USB Power Outlet) + 8 pcs of Premium Tenergy D Size 10,000mAh High Capacity High Rate NiMH Rechargeable Batteries
Price for both: $88.89

Buy the selected items together


Technical Details

  • Brand Name: Tenergy
  • Model Number: TN190

Product Description

Upgraded firmware and improved lid design!

Features & Benefits:
Supports the following NiMH Battery Sizes: AA, AAA, C, D, & 9v
Fast Smart Charging Capabilities
Easy-to-Read Blue LCD Status Display & Ambient Edge Lighting
Intelligent Charging Mode with Auto Cut-Off for Safety
(Negative delta V)
Unique algorithm to detect Bad or Defective Cells
Automatically detect Non-changeable/Disposable battery and cease charging
Refresh Button - battery recondition & helps increase battery life
Independent Charging Channels - 4 Slots
(2 additional for 9v)
Powered by an external AC adaptor (100-240V AC) for Worldwide Use
Automatically Detects/Selects proper charging current for inserted batteries

Safety Features:
Safety Timer Control for Overcharge Protection.
Negative Delta V (- ∆V) Cut-off Function (except for 9V batteries)
Reverse Polarity Protection
Short Circuit Protection.
Non-Rechargeable & Bad Battery (Cell) Detection

Charging Time Table
Battery Type (Ni-MH) Capacity Charging time (approx.)
AAA 500-1200mAh 1.5 - 2.5 hours
AA 1300-2800mAh 1.5 - 2.5 hours
C 1800-4500mAh 1.5 - 4 hours
D 1800-9000mAh 1.5 - 7 .5 hours
9V 150-300mAh 5-10 hours

Product Details

  • Product Dimensions: 10 x 7.5 x 4 inches ; 1.3 pounds
  • Shipping Weight: 1.4 pounds (View shipping rates and policies)
  • ASIN: B006OSQALU
  • Item model number: TN190
  • Average Customer Review: 3.6 out of 5 stars  See all reviews (234 customer reviews)
  • Amazon Best Sellers Rank:
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: December 22, 2011
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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

131 of 132 people found the following review helpful By NLee the Engineer HALL OF FAMETOP 50 REVIEWER on November 22, 2012
I bought this Tenergy Advanced Universal Charger (TN190) because I needed a smart charger that can handle high-capacity rechargeable batteries. Previously I have been using my old Rayovac PS3 Universal Smart Battery Charger for charging C and D cells. But the PS3 can only charge up to 3000mAh in each session, whereas my newer batteries (such as the Tenergy Centura C Size NiMH Batteries) are rated for 4000mAh or more.

Electrically, the TN190 is a very good charger. Here are several aspects I like:

- It is a true 'smart' charger in that it monitors the voltage profile of each cell individually, and stops charging as soon as a negative delta-voltage signal is detected. Most other products in this price range (such as the Rayovac PS20PL Platinum Universal Battery Charger) are timer-based and can only charge in pairs.

- The AC power adapter accepts 100-240V AC worldwide voltage. In contrast, my old Rayovac PS3 charger uses an AC transformer that is heavy, bulky and only works from 110V AC.

- The charger itself accepts 12V input. So with the correct CLA (cigarette lighter adapter), it can even be powered from 12V car battery.

- The charger has a very nice LCD panel, which shows you the charging status of all batteries at a glance.
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95 of 98 people found the following review helpful By K. Martin on April 9, 2012
Verified Purchase
Best charger for the best price I've ever owned. Handles my AA, AAA, D, and 9V NiMH LSD batteries like a charm. After placing a battery in the charger, the charger shows an animated bar graph indicating how full the battery is and that the battery is charging. As time passes, the bars get higher until it's full, at which point the bar graph is solid.

What's nice is that the batteries are only lukewarm while charging, yet they seem to charge adequately fast. No bad chemical odors and no hot batteries like I would get from the old Ray-O-Vac PS3 (the model I've had from the days of rechargeable alkaline batteries). The Tenergy is more compact and lighter than the Ray-O-Vac, and finally, the Tenergy recharges my 9V NiMH batteries (for backup power in the bedside alarm clocks) based on an intelligent controller instead of a timer like most older chargers do.

One time I put a battery in the charger that I'd forgotten I'd charged. The Tenergy attempted to charge it, but after a minute it realized it was full, and the charger completed. The old Ray-O-Vac probably would have spent another two hours overly pumping current into the cell.

I had an AccuManager charger that I thought was great. Paid about $50 for it and it worked for a while, but it died after a year, so I had to find a replacement. I wasn't about to fork over big $$$ for a decent charger, but I found this Tenergy unit and am happy. I actually look forward to restoring batteries back to good health in the Tenergy instead of fretting over whether the Ray-O-Vac will cause my batteries to explode.

I haven't had a need to try the discharge feature yet, but it's good to know it's available should I need to recondition my cells. One last comment about this charger is that I'm glad it's conservatively styled. I'm no fan of overly styled devices. I want a tool, not a toy.
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79 of 82 people found the following review helpful By Daniel D. Miller on August 5, 2012
Verified Purchase
After almost two years of regular use, I felt obliged to raise my rating of this device, and comment further on my experience with it.

First of all, *everything* that I stated about its construction quality was true, and I am still disappointed by it; I'm even more disappointed because I have come to *really* love this charger (!!), and having to using a string to hold it closed is very annoying!!

However, it has become my Number One charger, for several reasons, all of which I alluded to in my original review.

1. The ability to charge odd numbers of batteries is Supremely valuable in this world, where so many of my devices use either one or three batteries. I approved of that in my original review, but the reality over time has been that I appreciate this far more than my original review indicated; I have come to treasure this charger!!

2. The LCD display on this unit is superb!!! Every other charger just gives a done/not_done LED for each battery, but this unit shows the current level of charge for EACH battery, and then just shows a solid, non-blinking battery when the battery is fully done... it is Far clearer than the plain LED indicators are, and provides much more confidence to the user!!

3. Although my initial impression of the device was that it might fall apart at any moment, the reality has been that I've been using it for two years now, using it HEAVILY for the last few months, and it is Fine!! I've seen no indications that it has any thoughts of failing on me... so clearly it is more robust than my original impressions indicated.
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