Opus BT-C3100 Charger/Battery Tester


$ 39.99
18 reviews

SKU: opusbtc3100

This product is eligible for further discounts depending on how many you buy! You can purchase other products in the same category (batteries, chargers, or accessories) and it will add to the wholesale discount. Add some products to your cart to test!

This is the Opus BT-C3100 v2.2.  This is identical to the BT-C3400 that some other vendors are selling.  This is the most full featured charger we sell.  It can do all kinds of stuff in addition to just charging batteries, including testing and cycling them.  

This product is for advanced users only. We will not provide advice or technical support in using it to test your batteries.

Opus BT-C3100 Features:

  • 4 independent channels.  Most chargers have some channels connected together but not this one.  You can have each channel doing a different thing, one could be analyzing while another is charging, they could all be charging at different rates, the sky is the limit.
  • Internal resistance quick battery test mode checks internal resistance of batteries
  • Discharge testing up to 1A checks that your batteries really have as many mAh as they say they do.
  • Charging up to 2A per channel (up to 2 batteries) or 1A per channel (up to 4 batteries) allows very fast battery charging.
  • Refresh mode allows you to cycle batteries automatically
  • Charges Li-ion, NiMH, and NiCd
    • NiMH/NiCd sizes:  AAAA, AAA, AA, A, C, and SubC
    • Li-Ion Sizes:  10440, 14500, 14650, RCR123A (17340), 17500, 17670, 18350, 18500, 18650, 19670 (protected 18650), 25500, 26500, 26650, 20700 (including IJoy)
  • Can be set to 3.7V LiFeO4 charging or 4.35V high voltage li-ion charging by a switch on the PCB.  Default li-ion charging mode is 4.2V CC/CV.
  • Minus delta voltage charging for NiCd/NiMH reliable charging.
  • New backlit LED display tells you information

In the Box:

Customer Reviews
5.0 Based on 18 Reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
  • Lion Wholesale
  • best
  • information
  • instructions
  • somewhere
  • functions
  • units
  • 21700
  • BT-C3100
Richad M.
United States United States
  • What device/application do you use this with? Building battery packs.
Battery Charger, actually battery charger computer.

Charger has a lot of features. I'm using it to test a bunch of surplus batteries. So far it's been working for a week nonstop. Does everything that I want. Great charger.

Trip .
  • What device/application do you use this with? 18650's

I received this charger by default after the Xtar VP4 Plus decided to self implode after minimal usage. Opus BT-C3100 performs more and all it's functions effortlessly than most anybody will need and if only two batteries are bayed it does it in minutes, not hours. Operation is easily to assimilate as function selection is brightly illuminated on the LED screen. The 4 slidding spring bays operate smoothly and without any grating or snagging which is so common in cheaper units. The only con I can think of is the lack of charge-ability of my 21700 sized batteries, but that's a small price for all my 18650's to pay. If you want a fast, reliable. multil-functional easy to use competitively priced charger, then look no further and get yourself one before you have to kick yourself. Pip Pip!

Thos. E.
United States United States
Opus Battery charger/tester

Another fine product from the fine folks at Lion Wholesale.

Thomas A.
United States
  • What device/application do you use this with? Charging and analysis of batteries.
Opus C3100

The perfect device for your batteries. You can’t go wrong with it. Buy it and you won’t regret it.

  • What device/application do you use this with? 18650 14500 flashlight batteries
Nice smart charger

Works great for 18650 batteries and gives you plenty of information while charging. Very versatile.

We Also Recommend