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  • Opus Tester Analyzer Battery Charger, 12V, Black
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Opus Tester Analyzer Battery Charger, 12V, Black

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List Price: $69.95
Price: $41.98 & FREE Shipping. Details
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  • Easy to read backlit display Flexibility to setup all channels at once, or to program any channel with any function
  • Charge Test Discharge Recondition NiMH and NiCd AA AAA C and D batteries with included C&D adapter
  • Four independent channels can be programmed as group or individually
  • Second Generation design Version 2, six thermal monitors, 16 bit Delta-Sigma Analog to Digital Converter
  • Rugged construction with extensive ventilation for the batteries and charging circuits
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Frequently Bought Together

Opus Tester Analyzer Battery Charger, 12V, Black + AmazonBasics AA Rechargeable Batteries (8-Pack) Pre-charged
Price for both: $59.97

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CHOKING HAZARD -- Children under 8 yrs. can choke or suffocate on uninflated or broken balloons. Adult supervision required. Keep uninflated balloons from children. Discard broken balloons at once.
CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

Technical Details

  • Brand Name: OPUS
  • Model: BT-C2000
  • Item Package Quantity: 1

Product Details

  • Product Dimensions: 8 x 2.5 x 8 inches ; 1 pounds
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • Item model number: BT-C2000
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (53 customer reviews)
  • Amazon Best Sellers Rank:
  • Date first available at Amazon.com: October 11, 2013

Product Description

BT-C2000 Battery Charger Charge Test Analyze AA AAA C & D NiMH NiCd Batteries. Easy to read backlit display. Flexibility to setup all channels at once, or to program any channel with any function. Any battery AA AAA C or D. Charge them, Discharge them, Refresh them, Test them. Even internal resistance. This charger does it all with ease. Once you use this charger you will wonder why it took so long to get here, makes other chargers obsolete. Features Four independent channels can be programmed as group or individually. Charge, condition and analyze one to four AA or AAA batteries. Charge, condition and analyze one or two C and D batteries. Charge, condition and analyze NiMH and NiCd rechargeable batteries. Test internal resistance for any 1.5V battery including Alkaline. Easy to read large Backlit LCD display. Digitally displays capacity, voltage, time elapsed and current. Adjustable charging rate from 200 to 1400 mA. (1000 mA max 4 channels) Five modes of operation: Charge; Discharge; Discharge Refresh; Charge Test; Quick Test Negative delta V (-dV) full charge detection. Four independent thermocouples to manage battery temperature. Two independent thermal monitors for the charger circuits. Second Generation optimized charging circuits and firmware. 12V input powered and can be powered by an optional car adapter. Worldwide voltage switching power supply.

Customer Reviews

Read NLee's review for best info...
This makes it impossible for me to measure the remaining charge in a cell, which is vital for my long-term battery self-discharge rate measurement.
NLee the Engineer
The overall unit is very good… I give a fair 5 stars to the product.

Most Helpful Customer Reviews

154 of 156 people found the following review helpful By NLee the Engineer HALL OF FAMETOP 50 REVIEWER on January 1, 2014
[Full Disclosure]:
Several months ago, a distributor sent me (unsolicited) two pre-production units of BT-C2000 Battery Charger Tester Analyzer for my feedback. I was reluctant to write this review since it may give people the impression that I'm now accepting free samples for 'honest' reviews. However, since I already spent time playing with this charger, I might as well share my findings for the benefit of others. Just keep in mind that the following observations are based on pre-production models.
[End Disclosure]

I have purchased several advanced battery charger/tester/analyzer in the past 7-8 years, including the La Crosse BC-900, BC-700, BC-500 , BC1000, Maha MH-C9000, AccuPower IQ-328 and BM200. Unfortunately, they all have either design limitations or features that I miss.
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34 of 34 people found the following review helpful By Simon on February 3, 2014
Verified Purchase
I bought the Opus BT-C2000 few days ago. NLee the engineer’s review above is very complete (as always from NLee :) ), and accurate from what I have seen so far so I’ll just add my observations.

First impression, this Opus BT-C2000 is a very complete charger/analyzer and is easy to use. I got interested by this charger because it advertised the capability to charge/analyze cells up to 20,000mAh and has C/D cells adapters included in the box. I use high capacity C/D cells, so this looked like the right charger to get the job done. I’ve seen review of C/D cells adapters for other charger which do not fit/clip well in chargers, but the Opus ones are tight are work well. It does handle the C/D cell like any other cells, except for resistance checks (the adapters add resistance leading to wrong readings…)

The charger has thermal sensors for both the batteries and the unit itself. Info from the user manual, (I don’t have the tools to verify…), if it detects a temperature of 60deg on a cell, it will pause the on-going operation to let the cell cool down. If it detects a temperature of 70deg in the unit, it will also pause the operation to allow cooling down. This is very nice to prevent damaging the cells or the unit.

From an analysis I’ve read, the charge is gentle and seems to give a very nice and delicate finish, adjusting the charge rate toward the end. This good technical analysis can be read on candlepowerforums dot com. I would recommend googling it if interested in more technical details (simple google search “Opus BT-C2000 review”).

Once the charge is completed, it goes to a 10 to 15mA rate (seems to be depending of the type of cell being charged), just to maintain its level (I would still not leave the cells there for long periods...).
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21 of 21 people found the following review helpful By D. M. Harman VINE VOICE on February 1, 2014
Verified Purchase
After my La Cross BC-700 gave up the ghost after many hard years of use that included dropping it far more times than I can count I went in search of a replacement. Used almost exclusively on AA eneloops for photography speedlite use with the rare occasional AAA usage. On a typical week I recharge a set of 16 AA's two/three times a week so it gets considerably more use than the typical household.

The controls are easy to use, and if you've used a "smart charger" before you'll quickly figure out after reading the instructions how to operate the unit. It gives a bit more time after battery insertion to set mode and charge rate than the La Cross which is nice. Even under high charge rates of 1000 the batteries get warm but not hot. I've recharged hundreds of batteries and "refreshed" many in it as well and the unit has not faltered, become hot, or failed on a single battery. I really like it, it's easy to use, the display is easy to see and it's become a workhorse.

Now about that observation. I purchased new eneloops and immediately "refreshed" them as I typically do and noticed that the #1 and #4 slots showed the exact same charge level of 2044 after the process was complete. Didn't really make note of it but as I began using the unit I began to notice a pattern that the #1 and #4 slots almost always showed the same charge regardless of which eneloop battery was put in it when in refresh mode. Now I imagine it's possible that Nikons speedlites quality control is so good it always drains batteries exactly the same and that Sanyo's QC is also so well controlled that each battery also holds the exact same amount but it's difficult for me to believe that I can always randomly get those batteries in the #1 and #4 slot.
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