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GBtiger Opus BT-C3100 V2.2 Smart Intelligent Battery Charger for Rechargeable Battery

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Brand Name
Quick charge
Intelligent Charge
Display screen
Model Number
Opus BT - C3100 V2.2
Standard Battery
Battery Number
Bundle 1
BT-C3100 V2.2
US adapter
Charging Cell Type:
Ni-MH, NiCd, Lithium Ion
Rechargeable Battery Qty:
Input Voltage:
AC 100~240V 50/60HZ
Output Voltage:
DC 12V, 3.0A

13 Aug 2017
Great seller!!! very quickly sent, it's even faster epacket 1st. very happy with purchase! I recommend!!!

- S****n M.
13 Aug 2017

- A*******r S.
13 Aug 2017

- S****y L.
12 Aug 2017

- Anonymous
12 Aug 2017
Feedback is left. Ali came more please leave a review. we did not hard help the Chinese comrades. we are in most cases rescue their goods. I ordered the charger. I recommend it for our russian speaking in the product description about: universal charger opus bt-c3100 v2.2 with cooling system (built-in fan) to work with batteries capacity charging current limiting the values. Pleased with the charger. previous robiton after years of proper operation ceased to perform its functions. definitely opus bt-c3100 v2.2 for me is above all praise for the moment. although the box came with one side significantly dented. the product is securely packed and was not damaged. to today charged all my batteries. me this topic does not care. by the way, fan I have not noisy.

- V******r V.
12 Aug 2017

- Anonymous Shopper
11 Aug 2017
Came quickly.

- A*** B
11 Aug 2017
Thank you

- Anonymous Buyer
11 Aug 2017

- A**** S
11 Aug 2017

- R****n F.
11 Aug 2017

- A**** S
10 Aug 2017

- A*******e G.
10 Aug 2017

- N*****y K.
10 Aug 2017
Thank you all works!!!

- Anonymous
10 Aug 2017
Fits the description. in the Moscow region went a month.

- Anonymous
10 Aug 2017
-The packaging is damaged in transit. Checked, everything works fine! I'm happy with everything. Thank you seller!

- V****r O.
09 Aug 2017
Order came quickly. all in working condition. is able to test. later leave otzyv. prodovtsa recommend. s seller did not communicate.

- A**** S
08 Aug 2017

- Anonymous Buyer
08 Aug 2017

- D*****o K.
08 Aug 2017

- M*****l A.


Original Opus BT-C3100 V2.2 Smart Digital Intelligent 4 LCD Slots Universal Battery Charger for Rechargeable Battery EU/US Plug



Main Features:   
-    NEW LED back light displays charging / discharging / quick test / circuit more clearly in the dark  
-    New refresh mode can show you batteries capacity, letting you know real magnitude  
- The charging current can be selected to be 200mA, 300mA, 500mA, 700mA or 1000mA ( 1500mA and 2000mA can only be applied when only slot 1 or 4 is selected ). Default discharging current is 500mA  
- It provides four independent charging slots for rechargeable batteries. The charger can charge batteries of different types and sizes and with different capacities at the same time  
- 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. ( 3.7 Li-FeO4 and 4.35 type high voltage batteries charging mode can be selected through switch on board )  
- The charger also includes overheat detection to protect rechargeable batteries and charger itself from overheating  
- New added quick test mode to test the battery impedance  
- Four Working Mode Available at User's Choice: Charge, Discharge, Test, Quick Test and Refresh  
- Easy to read LCD with back light Showing Battery Voltage, Charge / Discharge Current, Charging Time, Battery Capacity etc.  
- Designed for AA ( LR6 ) and AAA ( LR3 ) NiCd, NiMH or 3.7V Li-ion rechargeable batteries in size type of 10440, 14500, 16340, 17335, 17500, 18490, 17670, 18650  
- Ideal for office and home use  
- Operating temperature: 0 - 40 deg.C  
- Max charging capacity: Up to 20000mAh  
- Power adapter: DC 12V, 3.0A ( Output ), 100-240V, 50 / 60Hz ( Input )  
- Note: Battery not included  
1. Voltage update rate is 30s instead of 60s.  
2. Charging voltage is regulated to 4.7V instead of 5.0V, thus loading on power adapter when batteries are flat is less. 5.0V charging voltage has problem in regulating the correct current level due to this over loading current on power adapter, which lead to Panasonic brand Li-ion batteries showed wrong charging capacity value ( + 25 percent ). With 4.7V charging voltage, the load on power adapter is greatly reduced and thus can make all types of batteries are charged properly.  
3. 4.35V charging time can be very long because charging current is regulated in entering the CV stage at 4.12V, which is same as 4.2V type. Now 4.35V charging algorithm is changed to 4.27V.  
5. Better safety feature: PCB temperature was used to in controlling fan on / off only with 2.0V, now this function is enhanced so that temperature is monitored for entering thermal shutdown mode when excessive high temperature is reached. It is especially helpful when fan is not running and which can lead to plastic melt down happening.  
6. New fan cover make better protection for cooling fan.  
7. Charging current range ( mA ): 200, 300, 500, 700, 1000, 1500, 2000  
8. Discharge current range ( mA ):200, 300, 500, 700, 1000 ( li-ion cell battery only )  
9. Max. charging capacity: 20000mAh  
10. Voltage deviation: < 0.03V  4.2V  
11. Current deviation: < 5%
Type: Charger     
   Brand: Opus     
   Model: BT-C3100 V2.2     
   Plug: US adapter     
   Charging Cell Type: Ni-MH, NiCd, Lithium Ion     
   Compatible : 10440, 22650, 10340, 18650, 16340 (RCR123), 14500, 18500, 26650     
   Rechargeable Battery Qty: 4     
   Input Voltage: AC 100~240V 50/60HZ     
   Output Voltage: DC 12V, 3.0A
LCD Screen: YES     
   Auto Circuit Detection: YES     
   Built-in Protected Circuit: YES     
   Over Voltage Protection: YES     
   Short-Circuit Protection: YES     
   Over-Charging Protection: YES     
   Over-Discharging Protection: YES
Battery Quantity: 4
Package weight: 0.53 kg     
   Product size (L x W x H): 14.4 x 9.8 x 3.9 cm / 5.66 x 3.85 x 1.53 inches     
   Package size (L x W x H): 16 x 22 x 5 cm / 6.29 x 8.65 x 1.97 inches
Package Contents: 1 x Battery Charger, 1 x US Power Adapter, 1 x English User Manual


Shipping CompanyShipping CostEstimated Delivery Time
DHL3 - 7 days
UPS Expedited3 - 7 days
EMS5 - 14 days
Post Air MailFree Shipping15 - 45 days
Return PolicyIf the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.

N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller ServiceOn-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).