Energizer CHVCWB2 Overnight NiMH AA/AAA Charger With 2 2000mAh AA Batteries

by Energizer

Product Features

• Charges two AA or AAA NiMH batteries overnight
• Includes two AA, 1700mAh NiMH batteries

Product Description

Amazon.com Product Description

Energizer Recharge Batteries

Energizer Recharge batteries and Energizer battery chargers offer an impactful solution to power-demanding devices. Energizer Recharge batteries can be recharged hundreds of times saving you time and money when powering high-draining devices. Ideal for high-draining devices like cameras and gaming accessories, these batteries also deliver everyday power needs for toys.

Can be recharged hundreds of times: affordable power solution AA batteries come pre-charged: saves time as they are ready to use right out of the package Holds charge for up to 12 months: reliable Energizer Recharge Batteries work with all Energizer Chargers: offers versatility and compatibility	Available in multiple cell sizes to power your whole house. ____________________________ Energizer Recharge AA Lasts up to 4X longer* in Digital Cameras *vs. Energizer MAX (results vary by camera) Energizer Recharge AAA Energizer Recharge C Energizer Recharge D Energizer Recharge 9V
Energizer Battery Chargers Basic Charger Basic Charger: Compact design Fold-out plug Charges up to 4 AA or AAA batteries at one time Compatible Cell Sizes: AA AAA Value Charger Value Charger: Compact design Fold-out plug Convenient indicator lights showing charge status Charges up to 4 AA or AAA batteries at one time Compatible Cell Sizes: AA AAA Smart Charger Smart Charger: Energy Star Certified Large charge countdown timer Convenient indicator lights showing charge status Bad Battery Alert detects non-rechargeable batteries when inserted and safely shuts down charger Charges up to 4 AA or AAA batteries at one time Compatible Cell Sizes: AA AAA Rapid Charger Rapid Charger: Energy Star Certified Includes car adapter in addition to wall adapter for on-the-go charging Convenient indicator lights showing charge status Charges up to 4 AA or AAA batteries at one time Compatible Cell Sizes: AA AAA Universal Charger Universal Charger: Energy Star Certified LCD screen shows charging status of all batteries inside Charging only begins once case is closed for added safety Charges up to 8 AA, 8 AAA, 4 C, 4 D or 2 9V batteries at one time Compatible Cell Sizes: AA AAA C D 9V

(C) 2011 Energizer. Energizer, Energizer Bunny design, card and label graphics and shape, and other marks are trademarks of Energizer.

Product Description

Energizer basic charger with slots for 4 AA or AAA batteries. Included are 2 AA batteries and is good for at least 100 charges.

Product Details

• Product Dimensions: 9 x 4 x 2.2 inches ; 11 ounces
• Shipping Weight: 8 ounces (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B00095M8VA
• UPC: 039800074010
• Item model number: CHVCWB2
• Average Customer Review: 2.4 out of 5 stars  See all reviews (22 customer reviews)
• Amazon Best Sellers Rank: #9,719 in Health & Personal Care (See Top 100 in Health & Personal Care)
  • #59 in Health & Personal Care > House Supplies > Household Batteries > AA

Customer Reviews

Most Helpful Customer Reviews

13 of 15 people found the following review helpful:

4.0 out of 5 stars Overnight Nimh Aa/aaa Charger: It's OK, June 10, 2007

By 

buyer me "I buy things" (California, USA) - See all my reviews

This review is from: Energizer CHVCWB2 Overnight NiMH AA/AAA Charger With 2 2000mAh AA Batteries (Electronics)

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.

9 of 10 people found the following review helpful:

1.0 out of 5 stars Slow cooker, August 11, 2008

By 

Daniel F. Heiman (http://LuteSocietyofAmerica.org) - See all my reviews
(REAL NAME)   

This review is from: Energizer CHVCWB2 Overnight NiMH AA/AAA Charger With 2 2000mAh AA Batteries (Electronics)

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....

6 of 6 people found the following review helpful:

2.0 out of 5 stars Overcharging, September 23, 2010

By 

Jason - See all my reviews

This review is from: Energizer CHVCWB2 Overnight NiMH AA/AAA Charger With 2 2000mAh AA Batteries (Electronics)

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.