Energizer CHVCWB2 Overnight NiMH AA/AAA Charger With 2 2000mAh AA Batteries
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Energizer CHVCWB2 Overnight NiMH AA/AAA Charger With 2 2000mAh AA Batteries Details
Manufacturer: Energizer BatteriesBrand: Energizer
Format: CD
Published: 2010-09-15
Model: CHVCWB2
Product features:
- Charges two AA or AAA NiMH batteries overnight
- Includes two AA, 1700mAh NiMH batteries
Customer Reviews of Energizer CHVCWB2 Overnight NiMH AA/AAA Charger With 2 2000mAh AA Batteries
Customer Review: Overcharging
Summary: 2 Stars
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.
Description of Energizer CHVCWB2 Overnight NiMH AA/AAA Charger With 2 2000mAh AA Batteries
Energizer basic charger with slots for 4 AA or AAA batteries. Included are 2 AA batteries and is good for at least 100 charges.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.
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Smart Charger:
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Compatible Cell Sizes:
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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 |
