Product specifications
Product description
The Opus BT-C3100 Intelligent Li-ion/NiCd/NiMH battery charger/analyzer is one of the first battery charger/analyzers that can (quick-)test/refresh/charge/discharge li-ion batteries and do that for NiCd/NiMH batteries too.
Truly a multi-functional intelligent batttery charger.
Charge: 200mA, 300mA, 500mA, 700mA and 1000mA
Discharge: 500mA
The 4 charging slots are completely independent.
This charger can handle AA, AAA, 10440, 14500, 16340, 18350, 18500, 18650, 26500 and 26650 batteries.
PAY ATTENTION!! THE OPUS BT-C3100 (version 2.2) BATTERY CHARGER IS SUPPLIED WITHOUT BATTERIES !!
Firmware version v2.2
Extra information
The charger integrates the minus delta voltage (-ΔV) for NiCd or NiMh battery charging termination, and for Li-ion batteries charging to 4.2V with pre-selected constant current.
The charger also includes overheat detection to protect rechargeable batteries and charger itself from overheating.
Power Adapter:Output: 12V DC,3.0A; Input: 100~240V~, 50/60Hz
Reviews
This product is available for sale, we do not yet have it in stock in our warehouse but it is on its way here. The shipping date is an estimate.
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ExcellentGreat for analysing cells so you can spot fakes and check your old ones are still carrying a charge. Even takes 26650 cells, which fit awkwardly but it does work. I have used mine to charge single series packs, which is possible by using a bit of wood. This is quite a good way to test all the cells are in the pack because 3450 x 5 = 17,250 mah. You can also measure the amount of charge going in, and compare that with the amount of charge coming out in a discharge test, which gives you the efficiency of the cell (how much energy you lost by storing it). Recommended. 4 stars because the display is mono LCD rather than all modern, touchscreen and smart, but such a thing doesn't exist yet.
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No.1 charger ever!Have one Opus BT-C3100 v2.2 for about 7 years (since 2014.) and it still works perfect on everyday usage with charging 2-3 Li-ion 18650!!! Had problem with noisy fan, but after replacement in first year of usage, it works 6 years after that almost soundless! Bought new just to have spare when old one once dies :)
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goodThis charger have two minus :
- charger is noisy
- no automatic discharge and charge functionPosted on
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Le must des chargeur 18650Bonjour , je l'ai acheter en 2016 (pas ici) , fonctionne toujours .
Pour moi c'est le meilleur chargeur d'accus .
Oui , on ne peux pas dormir à coter , charger toujours vos batteries sous la surveillance de quelqu'un , un accident est toujours possible (feu , explosion d'un accus) , je charge le soir quand je suis là , et l'éteint si je sort et remet mes accus en charge à mon retour .
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Hello, I bought it in 2016 (not here), still works.
For me it is the best battery charger.
Yes, we cannot sleep nearby, always charge your batteries under someone's supervision, an accident is always possible (fire, explosion of a battery), I charge in the evening when I am there, and turn it off if I go out and put my batteries back on my return.Posted on
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this is the safer and the best chargerThis is the safest charger available due to the fact that the temperature is constantly controlled under each battery slot and also on the PCB. So even if the fan goes down, the charger will stop if overheated.
The Fan is not noisy at all, as written in other comments, and can run at different speed. On top, the fan only runs when higher current is selected on 4 batteries. For instance, charging 4 AA batteries at 300 ma will not heat enough to start the fan
It is the only one showing the real current on top of the selected current, which is the best way to control overcharging. It also stop exactly at maximum 4V2, which is not the case with some other charger i have tested.
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Works nice but when it breaks kills all batteriesI had this charger for about 1,5 years. one slot suddenly didn't read voltages correctly which lead to batteries overcharging and them exploding while out of the charger. It is a tricky fault because there are no signs of fault and it killed me 9 accus until I found out what happened. I checked on a vaping group with several Opus users and ALL broke in the same way after 1,5-2 years and left them with 1-2 accus. Another problem is if you charge 2 accus with 2 amps or 4 with 1 amp the power source gets so hot - almost at melting point so it is not possible to charge at 4 amps total on all slots.
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NoisyAll looks good and dandy, but I cannot have it in my room. It's noisier than my pc. :(
Unacceptable for me. I charge 3 batt. daily, I also have an old efest luc, dead silent, and does its job. I was shopping for vaping batteries and I said I'd throw this in as well as an upgrade... Not the smartest move. At least not for me. It may be way safer and smarter than my actual one, but wont take its place anytime soon.
It might be great for others, but for me it proved to be an overkill and too noisy for my daily needs (under my office).Posted on
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opusthe best ever!
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Great response from ArjanWe ordered four of these from Nkon (Arjan). The products were delivered next day in NL as promised by Arjan. Very happy with our experience with nkon (Arjan) thus far.
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Best charger for the money, but Loud fan (v2.2) and a few quirksI got this charger for a bit over two years now (the v2.2 Version with the speed controlled fan). Bought it to supplement my BC-1000 since I need to charge 6-Packs of C-Cells sometimes and 18650 LiIon Batteries.
There are a few things I do not like about it:
- the fan ist still quite noisy, forget about (dis)charging while asleep
- The charger can accept C-Cells (size 'Baby'), but only two of them
- you cannot control charge and discharge current at the same time. It can only discharge NiMH with 700mA max, which is too low for my taste.
According to a review it always charges with high current, but PWM - so stress on batteries is higher than with other charging methods. I did not see any negative effects in practice with my eneloops, so it may not matter.
But I have to say, it is the best charger for the money.
- charges NiCd, NiMH and LiIon
- can measure internal resistance, so you can quickly see if a battery is 'dead'
- can measure capacity, and do so at different currents (mandatory feature in my opinion)
- can 'refresh' cycle, which is useful for NiMH Batteries
- accepts cells larger than AA and 18650
- Power supply is 12V, so easy to find replacement, should it die one day
It is a good universal charger/analyzer, the only real problem is that it is too loud. Also, I would have wished for the charger to accept four C-Cells, not only two.
I struggled between giving 3 and 4 stars because of the noise - but at this price it really deserves a 4 star ratingPosted on
