Customer Review

16 of 16 people found the following review helpful
4.0 out of 5 stars Good Charge. Better Neg. Delta V detection than la-cross charger thus you won't have to cook your batteries., January 2, 2014
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This review is from: Opus Tester Analyzer Battery Charger, 12V, Black (Electronics)
I have the BC-700, BC-900, and Vanson. This is a nice full feature charger. The discharge function does not recharge after drain is a nice feature. I wish they have put a little more effort and make a 4 slot C/D adapter instead of each independent slot adapter which limit it to only 2 channels. Only 1 negative complaint: I get bad reading from my C/D batteries with Quicktest function using the provided C/D adapters. It is probably due to poor contacts or faulty firmware. I cannot identify the problem. About one in 8 or 9 tries, I get proper reading. I have about 8-D Acculoop (NiMH), 6-C Tenery Centura (NiMH), 4-D (Ni-CAD). All reading was +500 mohms to +900 mOhms. Once in while, i get proper reading of 80mOhms or 40 mOhms. It does not affect the charging though. Proper reading of voltage when charging. Quick test on AA/AAA read properly though: 52mOhms to 80mOhms.
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Showing 1-1 of 1 posts in this discussion
Initial post: Jan 2, 2014 2:22:42 PM PST
From the manual under Quick Test.

NOTE: Due to greater contact resistance, measuring internal resistance of high capacity C and D cells with the included C&D to AA adapters is unreliable. Typically internal resistance of high capacity C and D cells is very low. In this case contact resistance is much greater than the internal resistance of the cell. The added contact resistance of the adapter contacts renders the measurement invalid.

So you are right, internal resistance measurement not valid with C&D cells using adapters.
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