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Archive for May, 2012

Tenergy 9V Battery Charger TN346 Review

Tuesday, May 15th, 2012

They say that necessity is the mother of all invention.  All I can say is that for the last few years I have been talking with battery charger manufacturers about the need for a higher capacity 9V Battery charger that could handle multiple chemistries – both NiMH and Li-Ion rechargeable batteries.

Finally somebody listened. The Tenergy Corp has just introduced an inexpensive, 6-bay 9V battery charger that will handle both NiMH and Li-Ion cells.  We had the opportunity to perform a “hands-on” product review of the Tenergy TN346 battery charger and see how it stood up to  the charging of Ansmann NiMH 9V cells as well as  HiTech and Tenergy Li-Ion Cells.  Take a few minutes to watch the product review.

We found the charger to perform well with both chemistries. The Ansmann NiMh’s charged up to capacity on the first charge.  Both the HiTech and Tenergy Li-Ion’s required 2 or 3 intital charge cycles to bring them up to full capacity. (This is typical of new batteries, particularly Li-Ion chemistry)

As to the batteries, the “new kid on the block” the Tenergy li-Ion 9V, (rated at 500 mah,)  we found the true capacity to be closer to 350 mah  (it’s stated minimum capacity.)

The best feature of the this new charger is when you have different devices that require a variety of run-times. You can opt for the higher capacity 9V’s in Li-Ion and still use it to charge the NiMH cells of lower capacity.

An example of this would be wireless mics or in-ear monitors. Suppose you have a few units that are real power hungry and require runtimes in excess of 4 hours. You could use a Li-Ion battery and get up to 15 hours and still use the NiMH cells for your shorter run time devices.  NiMH have higher recycles value than Li-Ions so you can still get the most mileage from them and use the high capacity Li-ions for your longer run-times – without the need for separate chargers — and the possibility of charging the wrong cells in the wrong charger.

 

High Quality Rechargeable Batteries

Wednesday, May 2nd, 2012

What constitutes a high quality rechargeable battery? This is not as simple as some may think.  As the public becomes more aware of the “green” value of rechargeable batteries, there is a growing list of new battery brands popping up.  It  reminds me of the “natural foods” phenomenon that occurred when the major food brands were challenged about the nutritional value of their products. Suddenly, every cereal, bread, snack, etc.,  starting touting the label “all natural.”

And so it goes with the rechargeable battery industry.

Here a few ways to tell if you’re getting  high quality rechargeable batteries:

  1. Check who’s using them.  The professionals that rely on high quality rechargeables have been using the best brands for quite some time. They’ve already done the research by trial and error.  This is a good time to point out some of our high profile companies – like Cirque du Soleil, Blue Man Group, plus thousands of production facilities and professional photographers who all use the Ansmann batteries and chargers.  This should be a huge “hint.”
  2. Check the warranty.  Is there a performance guarantee outside the 30-day refund? (Some brands won’t even provide the 30 days!)  Professional grade rechargeable batteries will offer a two-year guarantee on the ability for a nimh rechargeable battery to hold a charge. That doesn’t mean that the battery will still be able to be charged to 100% capacity – as this will vary greatly by frequency of use and drain applied to the battery. The warranty has more to do about internal shorting of the battery and it’s ability to continue to be used for more recycles.
  3. Check the Label.  Just like everyone in the supermarket is reading the nutritional value of the foods they consume, your batteries should provide a bit of truth to “what’s inside.” Recently, the European Union forced battery manufacturers to provide the “minimum capacity” on the package of rechargeable batteries and on the battery itself.  (EU Battery Directive 2066/66/EC)   This is a step in the right direction as  you will now see the differences in what the stated “maximum capacity” is and the minimum capacity.  If it differs by more than 10%, you going to see a lot of “re-labeling” occur.  Some brands out there that have been purporting AA 2900 mah reflect a minimum capcity of 2400 mah or less!  Although this new labeling is not mandatory here in the US  (yet) the Ansmann brand is already providing both the maximum AND minimum capacities on their labels.

All though you’ve heard it before, I’ll say it again.  You get what you pay for. Competition is the battery field is fierce. This is good for consumers with one caveat: Always compare apples to apples.  In a slow economy, price is king – however – saving $1 on a 4-pack of batteries that you’ll need to replace 3-4x times sooner makes no sense at all.


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