OPUS BT-C2400 Battery Charger Analyzer Tester for AA AAA NiMH NiCd rechargeable batteries

Tiene la función para descargar a 0% es muy útil para una carga full y las pilas que duraban con poca carga, parece ser que las repara

The product manual is a bit daunting, but well written. Once the features are understood, I found that pressing buttons was a good way to find out how to select the modes and achieve the desired result. The LCD display is illuminated and clear, showing the progress of the selected operation. Robust product.

** Received September 28, 2015 from Amazon Fulfillment with 2.2 firmware. ** This charger is awesome. It operates more similarly to LaCrosse chargers than the Maha C9000. I have two rechargeable battery intensive hobbies... one is small scale RC Car racing, and the other is photography. I'm constantly charging batteries for one of the two things and as of receiving this one I now own three smart chargers: This one, the Maha C9000, and the Maha C801D. The C801D is a very basic smart charger in comparison and I primarily use it when I need to charge several batteries at once rather than when I want to try to condition and restore a cell so this will mainly be a review in comparison to the C9000. The tl;dr version is, both the Maha C9000 and this Opus BT-C2400 have their strong points and for people that have a need to charge a lot of batteries, I can recommend both for different situations. Get this one if you'll ever be using older batteries as it has a better chance of restoring them. Get the Maha C9000 if you don't use old batteries and have the need to charge cells quicker. ----- The main point I really like about that BT-C2400 charger is that it wont give up on your old batteries that have seen better days. The Maha C9000 does a check when you insert a battery and if it detects too much resistance, it displays "HIGH" and refuses to charge a cell. The BT-C2400 however will attempt to charge the cell to try to restore it (it states in the manual that it will probably charge at a reduced rate to what you select if it detects really high resistance). I was able to restore some power to some old cells that had sat around since 2010. Though the resistance is too high for them to be used for RC racing, they can be used for slower drain items like remotes / controllers / tablet pens. The main point for the Maha C9000 is the ability to charge on all 4 slots at up to 2000 mAh where you're limited to half of that with the Opus (70% of it if you're only charging two batteries on the outer slots). If you need to charge something faster and still want the monitoring functions of a smart charger, the C9000 is the better option. I also like the break in mode of the C9000 for a fresh pack of batteries. You can use the refresh function similarly with the Opus, but even though you have to push more buttons on the Maha I like the break in interface more for it. If you're going to be working with older cells and want to try to restore them to get some use out of them, I'd go for this one over the C9000. The cost is lower and it will service older batteries without a problem where the Maha C9000 might refuse them. If you'll be working with newer batteries mostly and value the higher charge rate, the Maha C9000 is still a tried and tested smart charger and works really well. The Opus BT-3400 is another option, but it does the same thing as this one except it supports other types of batteries. It's really only worth the extra money if you think you'll be using lithium rechargeables. My hobbies only involve NiMH so it wasn't worth the extra $20 to step up. The final alternative is the LaCrosse chargers. I used to own their BC-700 but it just died on me at random so I don't have the best impression of longevity for LaCrosse chargers. Currently, the BC-700 is overpriced for what it does. The Opus BT-C2400 does everything the BC-700 does and more... in fact it's more comparable to the higher end BC-1000 in charging speed while still winning on features and price. To it's credit though, the BC-1000 does come with a case, two sets of batteries, and adapters so that offsets the price difference. At this point, I don't think I could seriously recommend any of the LaCrosse BC-700 at all. The BT-C2400 is simply better and costs less to boot. The BC-1000 should only be an option if you need the adapters to C or D, or if you really really need the smaller footprint of the LaCrosse charger (you don't). So I can really only recommend the Opus or the Maha right now. If you have the money, both have their positive points and I'd get one of each. For everyone else though, unless the faster charging speed is really necessary for you, this is probably the most well rounded smart charger on the market. It's also refreshing to see that they are always updating hardware and firmware so I think they are likely to stand behind their product longer.

So far it's good,been using from past 15 day's.

As an energy professional who among other things works with a lab that does professional testing on small rechargeable batteries, I'm picky about my charger. We have a bank of computer-controlled battery analyzers that cost thousands of dollars. So I know my stuff, and am kind of picky about my chargers for home. This thing has *all* the features: - It charges each battery individually, so you don't have to worry about pairing cels or putting in mismatched batteries and getting an unbalanced charge. - It has reverse-polarity protection, so no worries about accidentally sticking things in backwards. - If you want to "just charge the dang battery", that's the mode it is in at power up--stick a AA or AAA Ni-MH battery in, and the battery will charge at a reasonable rate. ...but if you're the type that wants MORE, it will also: - Give you a real-time display, for each bay individually, of the battery voltage, how long the battery has been charging, and the total number of mAH that have gone into the battery thus far. - You can manually configure the charge rate, in 100mA increments, if you either want to go easy on the battery to extend life and get more charge into it, or to do a faster charge, or adjust for a AAA battery versus a D cell, and you can configure the rate PER BATTERY. - Can be set to do anything you could want to do to a battery to charge, extend life, refresh it, or measure capacity: 1) Just charge the thing, and tell you how many mAh went in at the end. 2) Discharge it all the way, then charge it, and tell you how many mAh went in from a full discharge. 3) Charge it all the way, then fully discharge it, then fully charge it, and tell you how many mAh the battery provided between full and empty so you know the approximate capacity/health. 4) Do a refresh cycle where it will discharge and charge the battery three times, reporting the maximum capacity after the third cycle and leaving the battery charged. That 4th mode is fantastic if you have cells that have been abused laying around that seem to be dead. I have run one of those cycles (occasionally two, to be sure or get a full refresh) on "dead" batteries and discovered that with some proper exercise they're actually still totally usable. On the flip side, if you run one of those cycles and the mAh capacity is still low, you can be sure that the battery has failed and can be disposed of. The exercise mode can be particularly useful for "high capacity" batteries. I bought some high-quality ones here, and did some testing out of the package. Probably because of the length of time they were sitting on the shelf, if you just did a single charge-discharge cycle, the measured capacity was maybe 80% of the rated. After a 3-cycle exercise, however, they were providing the rated capacity. I replaced the battery charger at work with one of these and ran through our pile of mouse/keyboard batteries on a refresh/test cycle, which brought several back to life and identified the ones that needed to be chucked. Went from regular "my mouse keeps dying" complaints to none. Oh, and I've verified that the reported mAh capacity is both accurate (based on professional equipment) and consistent--with a good battery you'll get virtually the same number if you re-test it with this. Literally the only thing this doesn't do that a $1000 battery analyzer does is repeatedly cycle the battery until the capacity stops increasing. But honestly I can live without that.