---
product_id: 314428361
title: "OPUS Opus BT - C3100 V2.2 Digital Intelligent 4 Slots LCD Battery Charger Compatible with Li-ion NiCd NiMh Batteries - US Plug (PURPLISH BLUE)"
brand: "generic"
price: "NT$224"
currency: TWD
in_stock: true
url: https://www.desertcart.tw/products/314428361-opus-opus-bt-c3100-v2-2-digital-intelligent-4-slots
store_origin: TW
region: Taiwan
---

# Intelligent charging LCD display 4 slots OPUS Opus BT - C3100 V2.2 Digital Intelligent 4 Slots LCD Battery Charger Compatible with Li-ion NiCd NiMh Batteries - US Plug (PURPLISH BLUE)

**Brand:** generic
**Price:** NT$224
**Availability:** ✅ In Stock

## Summary

> 🔌 Power Up Your Life with Style!

## Quick Answers

- **What is this?** OPUS Opus BT - C3100 V2.2 Digital Intelligent 4 Slots LCD Battery Charger Compatible with Li-ion NiCd NiMh Batteries - US Plug (PURPLISH BLUE) by generic
- **How much does it cost?** NT$224 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/314428361-opus-opus-bt-c3100-v2-2-digital-intelligent-4-slots)

## Best For

- generic enthusiasts

## Why This Product

- Trusted generic brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First:** Built-in protection against overcharging and short circuits.
- • **Charge Smartly:** Experience intelligent charging with adaptive technology.
- • **Compact Design:** Lightweight at just 0.52 pounds, perfect for travel and storage.
- • **User-Friendly Interface:** LCD display provides real-time charging status at a glance.
- • **Versatile Compatibility:** Supports Li-ion, NiCd, and NiMh batteries for all your devices.

## Overview

The OPUS BT - C3100 V2.2 is a cutting-edge digital battery charger designed for versatility and efficiency. With four slots and compatibility with various battery types, it ensures your devices are always ready to go. The sleek LCD display keeps you informed, while its lightweight design makes it an ideal companion for both home and travel.

## Description



## Features

- manufacturer: Generic
- Item Trademark: GENERIC
- Item Weight: pounds, pounds, 0.52, 0.52
- Item Category: Battery Charger

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Weight | 0.52 Pounds |
| Item Dimensions D x W x H | 1.54"D x 3.86"W x 5.67"H |
| Current Rating | 3 Amps |
| Input Voltage | 240 Volts |
| Output Voltage | 12 Volts |
| Color | purple |

## Product Details

- **Colour:** Purplish Blue
- **Item weight:** 236 g
- **Specification met:** UL
- **Input voltage:** 5 Volts
- **Amperage:** 1 Amps

## Images

![OPUS Opus BT - C3100 V2.2 Digital Intelligent 4 Slots LCD Battery Charger Compatible with Li-ion NiCd NiMh Batteries - US Plug (PURPLISH BLUE) - Image 1](https://m.media-amazon.com/images/I/513A3qFOAcL.jpg)
![OPUS Opus BT - C3100 V2.2 Digital Intelligent 4 Slots LCD Battery Charger Compatible with Li-ion NiCd NiMh Batteries - US Plug (PURPLISH BLUE) - Image 2](https://m.media-amazon.com/images/I/61Vn0q7IPaL.jpg)
![OPUS Opus BT - C3100 V2.2 Digital Intelligent 4 Slots LCD Battery Charger Compatible with Li-ion NiCd NiMh Batteries - US Plug (PURPLISH BLUE) - Image 3](https://m.media-amazon.com/images/I/619sht4ujeL.jpg)
![OPUS Opus BT - C3100 V2.2 Digital Intelligent 4 Slots LCD Battery Charger Compatible with Li-ion NiCd NiMh Batteries - US Plug (PURPLISH BLUE) - Image 4](https://m.media-amazon.com/images/I/61fOM3tLhjL.jpg)
![OPUS Opus BT - C3100 V2.2 Digital Intelligent 4 Slots LCD Battery Charger Compatible with Li-ion NiCd NiMh Batteries - US Plug (PURPLISH BLUE) - Image 5](https://m.media-amazon.com/images/I/61uG-IQ+MgL.jpg)

## Questions & Answers

**Q: What is the difference between the c3100 and the c3400?  is it just the car charger comes with the c3400?  tyia**
A: Some people responding to this question need to read more carefully. The question was about the difference between the C3100 and C3400 (NOT the C2400). The BT-C3400 can be bought with or without the car charger. Obviously, the one without the car charger is cheaper (but not offered on Amazon at this moment). Typically the BT-C3400 without the car charger is still a few dollars more expensive than the BT-C3100. As far as the charger itself, both models are *almost* identical, but supposedly intended for different markets. The BT-C3100 with the most recent firmware has a Lithium discharge cutoff voltage of 2.8 volts. The BT-C3400 has a discharge cutoff of 3.1 volts. Opus claims the change was made to be more in align with international standards. Some people also think that the 3.1 volt discharge cutoff is better for the batteries, but LiIon batteries should never be stored long term at either of these voltages.
Be aware that both models have a hidden voltage selector switch under the back cover than will allow you to do a storage charge of 3.7 volts on standard LiIons. There is also a 4.35v charge mode setting that allows charging LiHV cells.

**Q: Can this charger be used with Netgear Arlo rechargeable batteries at 2300 mah wen 2000 mah looks like max output from charger?**
A: The maximum battery capacity this charger can handle is 20,000mAh. This should not be confused with the maximum charging current of 2000mA.Note that Capacity (mAh) = Current (mA) * Time (h). That means to recharge a 20,000mAh battery at 2000mA will take ~10 hours.

**Q: Does this have the ability to test batteries strength? not just good/bad but how many volts and amps it will put out**
A: It has quick test which I believe is the battery impedance.   Multiply the battery impedance times the current draw of your application. The result is the voltage drop internal to the battery.  If that number is significant, like more than about a few % of the battery voltage the loss will heat up the battery.
The most discharge current is 2000 mA or 2 Amperes.

**Q: Which version currently ships? v3.1, as in bt-c3400?**
A: The one I got has this on the label :
 Under the upc barcode:
 X0014AV9TH 

 Part number :
Opus BT - C3100 V2.2 Dig... - 
US Plug (Purplish Blue) 

The case, the plug and the cable are all black. The only thing I can see that would relate to the purplish blue reference is the color of the LCD screen once it is plugged in to the power outlet. Otherwise the entire physical charger cable and plug are all black. 

It works great for me.

## Frequently Bought Together

- Opus BT - C3100 V2.2 Universal Battery Charger Speedy LCD Display Smart Battery Charger for Rechargeable Batteries Ni-MH Ni-Cd AA AAA,3.7V Li-ion 18650 26650 17670 14500 18490 (4-Slot)
- Eneloop Panasonic BK-4MCCA10FA AAA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 10-Battery Pack
- Eneloop Panasonic BK-3MCCA16FA AA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 16-Battery Pack

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-27*