This is a private listing. Sign in to view your status or learn more about private listings.

Picture Information

Image is loading
Image not available
Have one to sell? Sell it yourself

Details about  2-Pack C & D Cell to AA Battery Adapter Charge Test C&D in BT-C2000 BM200 More

2-Pack C & D Cell to AA Battery Adapter Charge Test C&D in BT-C2000 BM200 More
Get fast shipping and excellent service from eBay Top-rated sellers.

Find out more about the Top-rated seller program - opens in a new window or tab

99.9% Positive feedback
  • Consistently receives highest buyers' ratings
  • Ships items quickly
  • Has earned a track record of excellent service

Item Information

Item condition:
Error icon
25 available / 90 sold
Please enter a quantity of $qty_dummy$ or less Please enter a quantity of 1 Purchases are limited to $qty_dummy$ per buyer Please enter quantity of 1 or more Please enter a lower number Choose quantity that is less than $qty_dummy1$ or equal to $qty_dummy$ You can only choose quantity that is equal to $qty_dummy$
US $9.98
Approximately C $10.92(including shipping)
38 watchers
Experienced Seller
Limited quantity remaining
More than 78% Sold
US $8.80 (approx. C $9.63) USPS First Class Mail Intl / First Class Package Intl Service | See details
See details about international shipping here.  help icon for Shipping - opens a layer
Item location:
Sacramento, California, United States
Ships to:
Worldwide See exclusions
International shipping and import charges paid to Pitney Bowes Inc. Learn More- opens in a new window or tab
14 day money back, buyer pays return shipping See details
eBay item number:
Seller assumes all responsibility for this listing.
Last updated on  Aug 09, 2014 13:08:34 EDT  View all revisions

Item specifics

New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read moreabout the condition
Compatible Battery Type(s):

C / D

Product Type:

Battery Adapter

Number of Batteries Included:


C and D to AA Cell Adapter for Battery Chargers

BT-C2000 and BM200 Chargers

Now you can charge and test C and D cells with your BT-C2000 or BM200 charger.

For so long I have wanted to test C and D NiMH cells. Now a plug and play solution. The Opus BT-C2000 charger will charge and test high capacity cells up to 20,000 mAh. The later version of the BM200 charger has similar firmware to charge and test cells up to 20,000 mAh. Using these C or D to AA cell adapters you can now test your high capacity C and D NiMH cells. Simpley insert the adapters into slots 1 and 4. Put in your batteries to test. Select the Charge/Test function with appropriate current selections. The rest is automatic. At the end of the test the charger will report tested capacity of that cell. Group your batteries by tested capacity to ensure you will get the performance you expect from your batteries in the field. Find out if a cell is no longer useable. Cycle the cell several times to return it to full capacity. You have those options with these battery adapters.

The adapter will fit other chargers with a test function like the La Crosse BC-700, BC-900, BC-9009, BC-1000, Technoline BC-700 and AccuPower IQ328 however these chargers have firmware limitations that do not allow the testing of high capacity cells.  The adapters can not be used to test or charge high capacity C and D cells in those chargers.


I am getting asked many questions about use in the PowerEx MH-C9000 charger. After extensive testing it is a mechanical fit issue. The srping pressure on the negative contact is not sufficient to provide good contact resistance on the adapter. Also the positive contact is landing on the smooth area in the C9000 charger contact. That contributes to contact resistance. The ability of the adapter to move when seated in the charger is also an issue. The adapters appear to work in about 80% of the C9000 chargers tested. However factors such as how the adapter is seated for charging and testing change the contact resistance and the results of charging and testing. Therefore the adapter is not guaranteed to work in the C9000.

The adapters are designed for the BT-C2000. They fit perfectly in that charger with no issues.

Beware of other adapters being sold on ebay. There are differences from the adapters sold here. Said vendors even copied text from my listings to flog their horse. The text copied is incorrect and those adapters are a worse fit in the C9000 charger. Buyer beware. Things from afar are not always what they proclaim to be. I stand behind all products that I sell and will resolve all issues. 


Length; 75mm

Width; 45mm

Each Adapter will hold one C size or one D size cell.

Adapt to standard AA size cell for testing and charging.

Included two C&D to AA adapter in retail box.


Chargers that can test batteries.

Say you purchase some batteries that are billed as the latest and greatest AA 3000 mAh batteries. How do you know?? Most major brands are very good about rating their batteries, they supply standard data sheets on their web site. However there are manufacturers and retailers that flat out lie about the capacity of batteries. So how can you tell if you are getting ripped off. Get a charger that can actually test batteries for capacity.

First a bit about battery capacity. Capacity rating is usually given in Ah or mAh (Ah - amp hours or mAh - miliamp hours) and is an indication of how much energy is usable from the battery. An example, if we have an AA cell rated at 2500 mAh it means that battery could supply a 2.5 Amp load (2500 mA) for a time of one hour. Or it could supply a 500 mA load for a time of 5 hours. Approximately. So capacity is an indication of how much work you can do with your batteries.

There are chargers that can test your batteries for the actual capacity, as opposed to what is claimed by the manufacturer or retailer. To do this all of these chargers perform the following cycle; put a full charge on the batteries, then perform a controlled discharge while measuring how much energy is obtained from the battery, then perform a full charge again. At the end of the cycle the tested capacity is displayed on the control panel of the charger. If you are serious about getting the best performance from your batteries then this kind of charger is a must have. It is the only way you will know for sure the state of your batteries.

These kind of chargers usually have other functions that are useful such as break-in and recondition cycles. Names and details differ but the ability to test is the same in all of them. Some have better capability and controls than others but the ones listed here will all do the basic job of testing batteries for actual capacity.

Shown in table form with basic parameters.

Brand Max Charge Current
Max Discharge Current
Max Testable Capacity
PowerEx C9000
2000 mA
1000 mA
19.99 Ah   (19,990 mAh)
Opus BT-C2000
1000 mA (1400 mA for 2 cells)
500 mA
20.00 Ah   (20,000 mAh)
1000 mA (1400 mA for 2 Cells)
500 mA
20.00 Ah   (20,000 mAh)
AccuPower IQ328
1000 mA (1800 mA for 2 Cells)
500 mA 3500 mAh
La Crosse BC-1000
1000 mA (1800 mA for 2 Cells)
500 mA 3000 mAh
La Crosse BC-9009
1000 mA (1800 mA for 2 Cells)
500 mA 3000 mAh
La Crosse BC-700
700 mA
350 mA
3000 mAh
La Crosse BC-500
500 mA
250 mA
3000 mAh

As you can see the PowerEx C9000 is by far the most capable charger/analyzer in this group. It also has the best build quality and provides the best cooling situation for the batteries under test. The charge and discharge functions are programmable in 100 mA increments. 

The BM200 is a capable charger. It has good space for cooling the batteries under test. The charge rate is programmable in 200 mA increments. However the discharge rate is fixed at half the charge rate with maximum of 500 mA. Testable capacity up to 20,000 mAh. This charger also has a test for battery internal resistance. This can be a useful test for some applications.

The AccuPower IQ328 is more compact, gives less cooling air to the batteries. The charge rate has 4 settings, 200 mA, 500 mA, 700 mA and 1000 mA. The discharge current is fixed at half the charge current. Maximum testable capacity is 3500 mAh. A capable charger and good value.

The La Crosse BC-1000 and BC-9009 are identical, except for the color of the case. Take off the case and the circuits boards are identical, as is the firmware revision. La Crosse just put a new case on the BC-9009 and changed the name. These two chargers have the same electrical specifications as the AccuPower IQ328. Four charge current settings, 200 mA, 500 mA, 700 mA and 1000 mA. Discharge current is fixed at half the charge current. However firmware restricts testable capacity to 3000 mAh.

The La Crosse BC-700 is just like the BC-1000 except it has only three current setting, 200 mA, 500 mA and 700 mA. Discharge current is fixed at half the charge current. 3000 mAh max testable capacity.

The La Crosse BC-500 is the most limited. The display is limited in the information it can display and charge current is 200 mA or 500 mA. It has only one function button and is a bit harder to program and use for test purposes. If is a fine charger but not a good choice for testing batteries.


Payment Information.

Paypal accepted. Credit card payments accepted through Paypal.

Payment due within 4 days. If payment not received a non paid item case will be filed automatically by the ebay system.

California Sales Tax collected for all shipments to a California address.

International Buyers Please Note:
Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.

Shipping Terms.

To view shipping options click on the Shipping and Payments tab above. Provide quantity, Country, and zip code, then click Get Rates. Shipping options will be displayed.

Shipment is to the address provided to eBay during the checkout process. If your address is incorrect please correct it BEFORE confirming your payment.

All packages returned as undeliverable are subject to an additional shipping charge to reship the item.

If you have a question about shipping please ask before making the purchase.

Customer Service Information.

To contact for questions concerning an item please use the "Ask Question" link at the bottom of the listing page. A reply is usually given within 24 hours.

Return policy.
Returns accepted within 14 days.
Returned items must be unopened in original packaging.
Buyer pays return shipping cost.

For defective items the manufacturers waranty applies. However assistance with manufacturer warranty service is offered within 30 days of purchase.


Questions and answers about this item

No questions or answers have been posted about this item.

Seller assumes all responsibility for this listing.

Shipping and handling

Save on shipping. This seller offers shipping discounts on combined purchases for eligible items.
Item location: Sacramento, California, United States
Shipping to: Worldwide
Excludes: Algeria, Angola, Benin, Botswana, Burkina Faso, Burundi, Cameroon, Central African Republic, Chad, Comoros, Congo, Democratic Republic of the, Congo, Republic of the, Côte d'Ivoire (Ivory Coast), Djibouti, Egypt, Equatorial Guinea, Eritrea, Ethiopia, Gabon Republic, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Lesotho, Liberia, Libya, Madagascar, Malawi, Mali, Mauritania, Mayotte, Morocco, Mozambique, Namibia, Niger, Nigeria, Rwanda, Saint Helena, Senegal, Seychelles, Sierra Leone, Somalia, Swaziland, Tanzania, Togo, Tunisia, Uganda, Western Sahara, Zambia, Zimbabwe, Afghanistan, China, Pakistan, Iraq, Yemen, Papua New Guinea, Mexico
Domestic handling time
Will usually ship within 1 business day of receiving cleared payment - opens in a new window or tab.

Return policy

Item must be returned within
Refund will be given as
14 days after the buyer receives it
Money Back
The buyer is responsible for return shipping costs.
Return policy details
Must be in original unopened retail package.

Payment details

Payment method Preferred/Accepted Buyer protection on eBay
Credit card or Pre-authorized Debit through PayPal
PayPal Preferred
time left
Current bid amount
Shipping amount
Bid Count
time left
current bid
Current bid amount Approximately:
Shipping amount Approximately:
Import charges:
Import charges:
(estimated and based on max bid)
Your bid amount


Your current max bid:
Increase your chances of winning by setting a higher bid now.
Let eBay place automatic bids for you  This opens a help overlay dialogue about automatic bidding.
How does automatic bidding work?
As other bids come in, eBay will automatically raise your bid in small amounts, up to your limit. Learn More. - opens in a new window or tab
Close button. This closes the help overlay dialogue.
, up to
By submitting your bid, you'll be committing to buy this item from the seller if you are the winning bidder.
By submitting your bid, you are committing to buy this item from the seller if you are the winning bidder. You have read and agree to the Global Shipping Program terms and conditions - opens in a new window or tab. Import charges previously quoted are subject to change if you increase you maximum bid amount.
By clicking Confirm, you commit to buy this item from the seller if you are the winning bidder.
By clicking Confirm, you are committing to buy this item from the seller if you are the winning bidder and have read and agree to the Global Shipping Program terms and conditions - opens in a new window or tab. Import charges previously quoted are subject to change if you increase your maximum bid amount.
Tell us what you think 
We've made a few changes to bidding.
Were these helpful?
Bid layer is updating the contents.
Resume bidding, if the page does not update immediately.
FREE shipping
See item description
+ See item description for shipping
(Enter ##1## or more)
(Enter more than ##1##)
Your max bid:
You've been outbid. Don't let it get away - place another bid.
You've been outbid by an automatic bid placed earlier by another bidder.
You're the highest bidder on this item!
You're the first bidder on this item!
You're the highest bidder on this item, but you're close to being outbid.
This auction is almost over and you're currently the high bidder.
You're the high bidder on this item, but the reserve price hasn't been met yet.
You've been outbid by someone else.
You can still win! Try bidding again.
You've been outbid by someone else's max bid.
You can still win! Try bidding again.
Your bid wasn't accepted because it's the same as someone else's bid.
Try raising your max bid.
You're the highest bidder!
To increase your chances of winning, try raising your bid.
You're the first bidder. Good Luck!
You're still the highest bidder!
You increased your max bid to
Please enter your bid again.
Enter a valid amount for your bid.
Enter a bid that is the minimum bid amount or higher.
You have to bid at least
Sorry, you can't lower your maximum bid once it's placed.
This seller requires the buyer to have a PayPal account to purchase this item. Get a PayPal account here .
Your bid is the same as or more than the Buy It Now price. You can save time and money by buying it now.
Place bid
Review and confirm your bid
Bid confirmation
Increase max bid
Enter a custom max bid more than ##2##
Enter a custom max bid of ##2## or more
+ ##2## approximate import charges
##2## (approximately)
Please enter a higher amount than the current bid.
+ ##2## for shipping
Bid ##3## now
Bid ##3##
Time left:
Current bid:
(approximately ##1##)
Your maximum bid:
(approximately ##1##)
Increase your maximum bid:
By clicking 1 Click Bid, you commit to buy this item from the seller if you're the winning bidder. Learn moreabout 1-click bid - opens in a new window or tab
(approximately ##1##)
Winning bid:
Starting bid:
Congrats! The auction has ended and you're the winner.
The auction has ended, but the reserve price was not met.
Sorry, the auction has ended and you were outbid.
Good news, you're the high bidder.
Sorry, you've been outbid.
You're the high bidder, but the reserve price is not met.
Please enter a higher amount than the current bid.
Maximum bids cannot be lowered once submitted.
Please enter a valid number.
This is a private listing and your identity will not be disclosed to anyone except the seller.