Tenergy TN141 2-Bay 9V Battery Charger with Centura 9V Batteries Included

HOLA Soy Martin: Excelente accesorio, funciona muy bien, las pilas duran mas que las compraba regularmente.

Mexico on Jun 22, 2023

Mauricio Garcia: Precio y calidad cargan rápido y lo uso para sensores de movimiento

Mexico on May 16, 2023

Amazon Customer: This 9V rechargeable must have 8x1.2V packaged together as it's multimeter measurement when fully charged shows 9.6V which is exceptional and suggests very good in-use performance can be expected.

If it lives up to its 'low discharge' status and advertised long battery life it would certainly be highly recommended.

The one downside is that having bought this from an Australian Amazon web site no obvious mention was made that it shipped from the USA and that a plug adapter would be required at additional cost AU$8 - this should be corrected.

Australia on Sep 05, 2022

Eaton Drinkwell: These 9 volt batteries don't hold a charge as long as non-rechargeables, but given the price of these rechargeable they are well worth the $. I purchased 4 extra of these batteries and keep a rotation for my daily device needs. So far all have held a charge well, and I have no reason to be skeptical of the sellers claim that they can be recharged up to 1000 times. So far, so good.

United States on Sep 21, 2021

Cliente de Amazon: Ya llegó gracias

Mexico on Mar 19, 2021

c: They charged quite fast. I'm not sure how long it took to charge. I plugged them in, an hour later I checked on them and they were fully charged. They work great & last a lot longer in my medical equipment than Energizer batteries. I like it the charger is travel size. Fits right into my purse or make-up bag.

United States on May 24, 2018

C.S. Park: For those that play Electric Acoustic guitars, I recommend this product. A slight downside, which is not a huge problem, is that the battery is slightly bigger than regular non-chargeable batteries. I own a Taylor guitar and it is so tight that I have to push it hard to get it inside. Nonetheless, it fits and works like a champ. I play very often plugged in and always doubtful that my guitar will go without power during a worship service. Now, I do not worry about changing one out before a service. In the long run, this should save me quite a bit of $. I will come back and update this more.

There is a "hum" when charging. Not a big problem.

United States on Jan 11, 2016

W BRUCE MACDONALD: When reviewing Amazon.com reviews about this product, the common complaint by nearly everyone was that the male connection on the battery pulled off and could not be reattached making the battery useless. When I received my four batteries and charger, I used a flat screw driver blade to bend the female connections slightly larger on all batteries, charger and devices using these batteries. Now the connections slip on very easily and put very little strain on the battery connections. So far this has worked, and the batteries and charger perform perfectly. The charger has LEDS that change color from red to green when each battery is fully charged. The electric plug on the charger swivels flat for storage or travel. I now note that the supplier I ordered from Vision Store USA is no longer available on Amazon.ca and although the price is the same from the new supplier, the cost of postage has doubled which seems very extreme.
Update Nov/15-I have now used these batteries for 5 months and they have all performed perfectly with no problem with the connections
pulling loose after I loosened them. I'm so impressed with these batteries, I have now purchased 12 batteries and use them...

Canada on Jul 14, 2015

Every Miles A Memory: My wife has a Karaoke Machine and the Cordless Mic's use 9Volt batteries. We were going through quite a few batteries which just seemed like a waste of money

I ordered this set of Tenergy Rechargeable 9volts with a few back up sets of batteries to keep stored, and we've never had to buy another set of batteries

Only thing I dont like is when the batt's are on the charger, the charger hums loudly. We just have to plug it into a different room so we dont hear the hum

These work great, last a long time and have paid for themselves multiple times already

Pat Bonish
[...]

United States on May 13, 2012

Zodoz: I knew nothing about this brand and took a chance based on the reviews. Ordinary NiMH 9V retail for about $10 each, so getting 4 and a charger for about $30, inclusive of S&H, is still a good deal, assuming at worst, the battery and charger are like any ordinary NiMH 9V or a simple timer based 9V charger.

The packaging and products build quality are first rate, as good as name brands like Energizer or Duracell.

Charger
It not only shuts off based on reaching the final voltage, but has a backup timer to prevent overcharging. Out of box, the batteries top up in < 1 hour, and this was confirmed because I did it 4x, one for each battery. On a depleted battery I had at home it was fully charged in under 2 hours. It does not get hot to touch. It works as described with the LED being RED when charging, and turning green when charge completed. The charger is very small and pocket sized.

Battery
9V batteries are made of multiple cells in series, it can have 6,7,8 giving a final voltage of 7.5, 8.4 and 9.6Vdc. Cheaper 9V use 6 cells, and the benefit of having more cells is that often devices powered with 9V batteries turn off when it detects low voltage, so...

United States on May 20, 2011