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  • Energizer CHVCWB2 Overnight NiMH AA/AAA Charger With 2 2000mAh AA Batteries
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Energizer Recharge Basic Charger with AA Batteries 2 Pack

49 customer reviews

List Price: $13.30
Price: $9.99 & FREE Shipping
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Ships from and sold by Sullivan Executive Services.
Single
  • Charges two AA or AAA NiMH batteries overnight
  • Includes two AA, 1700mAh NiMH batteries
50 new from $7.15

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$9.99 & FREE Shipping Only 1 left in stock. Ships from and sold by Sullivan Executive Services.

Frequently Bought Together

Energizer CHVCWB2 Overnight NiMH AA/AAA Charger With 2 2000mAh AA Batteries + Energizer NH12BP-4 Rechargeable Nickel Metal Hydride AAA Battery, 4 Count
Price for both: $19.98

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Product Description

The Energizer® Recharge® Basic Charger, along with long lasting Energizer® Recharge® batteries, is the perfect solution for all your power needs. Comes complete with two AA Energizer® Recharge® batteries but can charge up to four AA cells at once. Will also charge AAA size.

Product Details

  • Shipping Information: View shipping rates and policies
  • ASIN: B00CN0H3CS
  • Average Customer Review: 3.3 out of 5 stars  See all reviews (49 customer reviews)
  • Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

11 of 11 people found the following review helpful By NLee the Engineer HALL OF FAMETOP 50 REVIEWER on January 30, 2012
Size: Single
There are smart chargers, there are dumb chargers, and then there is this Energizer Overnight Charger.

A 'smart' charger monitors each battery's status individually, and stops charging when each battery is full. This is the only way to ensure that your batteries are fully charged but not over-charged.

A 'dumb' charger typically charges batteries in pairs only, and relies on a safety timer to terminate charging after 8-12 hours.

This Energizer CHVC3 Overnight charger (also called 'Basic Charger') shown here is dumber than dumb. It has no charge termination mechanism at all. It simply charges each pair of batteries at a low current (190mA for AA, 90mA for AAA) FOREVER. It is up to you to remember to remove the batteries after certain number of hours, as estimated by:
[ Charge Time (hour) = Capacity (mAh) / Current (mA) ]

For example, if your batteries' capacity is 2000mAh _and_ they are completely discharged, then it takes roughly 11 hours to fully recharge them (2000/190 = ~11 hours). But if the capacity is lower _or_ they are only partially discharged, then the required charge time is shorter.

NiMH batteries can typically withstand over-charging at 0.1C current (which means 200mA for a 2000mAh cell) without immediate damage. So if you forgot and left your batteries in this charger for an extra day, they are not going to leak or explode. But in the long run, over-charger will lead to reduced capacity and shorter lifespan.
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15 of 17 people found the following review helpful By Daniel F. Heiman on August 11, 2008
Size: Single Verified Purchase
It is not clear enough from the earlier reviews -- This charger DOES NOT automatically shut off when the batteries reach full charge. It just keeps cooking them, and they do get quite hot. Can't be very good for them....
Update July 2013:
The Energizer rechargeable batteries are not particularly good either. They survive few recharging cycles than the Eneloops.
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10 of 11 people found the following review helpful By Jason on September 23, 2010
Size: Single
I don't have this specific model of charger (I have CHVCM with the same green lights), but I want to give some input on overcharging. It is only safe to leave NiMH batteries charging indefinitely if the charging current is less than 10% of the cell's current rating (The mAh rating.) If the charging current is higher, then you definitely do not want to leave the batteries charging past full charge.

To calculate the charging time, just divide the battery's mAh rating by the charging current output by the charger (measured in mA.) I couldn't find a spec sheet on this charger, so you'll have to flip it over and look at the writing on the back or sides. It will be around the other electrical specifications (AC input voltage and DC output voltage ratings.)

My charger lists the charging current as: 260 to 300mA (~15% of cell's rating). So with 2000mAh batteries, that's an average charging time of about 7 hours. Of course, chargers and batteries vary, so I would let it run a little longer. (My spec sheet reads 8.5hrs for 2000mAh and 10.5hrs for 2450mAh. It also says that there is an 11 hour shutoff timer. Nice!)

You don't need to be totally paranoid about how long you let the charge go, but it does need your attention. Going by the math above, I don't think you'd run into any trouble if you let the charge run for 10 hours, but I would be nervous to let it run for 15 hours. If you want to let it run overnight, but are worried of charging too long, just use a simple AC lamp timer to decide how long to run the charge while you're sleeping. You can pick one up for $10 or less.

That being said, you may be able to charge the suckers for 24 hours without starting a fire or causing the batteries to explode (but maybe not), but it would definitely hurt the battery's ability to hold a charge.
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15 of 19 people found the following review helpful By buyer me on June 10, 2007
Size: Single
The light comes on when it's charging, but never goes off, so you never know when it's done. Also, you have to charge 2 or 4 at a time, not one or three. Seems to work OK.
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7 of 8 people found the following review helpful By hex on November 23, 2008
Size: Single
Indeed, like the others said, there is NO WAY to know when the batteries are fully charged because the green light stays on forever. This is wrong.
I am not even sure if this charger actually stops charging when the batteries are full. If not, this means it is a serious hazard.
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3 of 3 people found the following review helpful By William Smith on August 28, 2012
Size: Single Verified Purchase
I purchased these batteries because they were listed as: 2000mAh AA Batteries.

In reality, what I received was 1400 mAh batteries. May seem like a minor difference, but I assure you that 2000 mAh will perform longer and better. This listing is not true.

I'm calling Amazon right now to request that they send me the batteries that they advertised and that they send them overnight. If they have fool you too, I suggest that you do the same thing.
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4 of 5 people found the following review helpful By Doherty on May 17, 2011
Size: Single
What a waste of money. left on charge overnight, i thought my house was gonna burn down with the heat generated from this crappy charger.
Lights come on but never turn off so its impossible to know when they are at full charge ( if they ever reach full charge).
Battery life is woefully low, i used it for my Radio Controlled racing car and got about 3 mins of constant use then, zip ! batterys flat dead. charged them again overnight. woke up, same deal. batterys scorching hot to the touch and 3 or so minutes use in my RC car before dying out completley.
This charger now rests comfortably in the bottom of my garbage bin, awaiting for the bin man to come and take it where it belongs, in a land fill.
kept the actual batterys that came with it and now charge them in my brand new Duracell charger, works like a charm.
very surprised and disapointed with Energizer ??? WTF

Duracell Value Charger With 4AA Pre Charged Rechargeable Nimh Batteries, CEF14DX4N
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