--- product_id: 143888476 title: "Opus Battery Charger Analyzer Tester for Li-ion NiMH NiCd Rechargeable Batteries C3400 BT-C3400 AA AAA C 18650" brand: "carlsan" price: "469.48 DT" currency: TND in_stock: true category: "Carlsan" url: https://www.desertcart.tn/products/143888476-opus-battery-charger-analyzer-tester-for-li-ion-nimh-nicd store_origin: TN region: Tunisia --- # 2000mA max charge current 4 independent programmable channels Supports Li-ion, NiMH, NiCd batteries Opus Battery Charger Analyzer Tester for Li-ion NiMH NiCd Rechargeable Batteries C3400 BT-C3400 AA AAA C 18650 **Brand:** carlsan **Price:** 469.48 DT **Availability:** ✅ In Stock ## Summary > 🔋 Charge smarter, test faster, power longer — be the battery guru your gear deserves! ## Quick Answers - **What is this?** Opus Battery Charger Analyzer Tester for Li-ion NiMH NiCd Rechargeable Batteries C3400 BT-C3400 AA AAA C 18650 by carlsan - **How much does it cost?** 469.48 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/143888476-opus-battery-charger-analyzer-tester-for-li-ion-nimh-nicd) ## Best For - carlsan enthusiasts ## Why This Product - Trusted carlsan brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dynamic Charging Power:** Adjustable current from 200 to 2000mA to optimize battery health and speed - • **Smart Charge & Test Modes:** Five operation modes including Quick Test and Discharge Refresh for ultimate battery care - • **Clear Real-Time Monitoring:** Backlit LCD displays capacity, voltage, current, and elapsed time for full transparency - • **Precision Multi-Channel Control:** Individually program 4 channels for simultaneous battery management - • **Comprehensive Battery Compatibility:** Works seamlessly with AAAA to 26650 Li-ion, NiMH, and NiCd cells ## Overview The Opus BT-C3400 is a versatile, professional-grade battery charger and analyzer supporting Li-ion, NiMH, and NiCd rechargeable cells across multiple sizes. Featuring four independent programmable channels, adjustable charging currents up to 2000mA, and five distinct operation modes, it offers precise control and detailed real-time monitoring via a backlit LCD. Ideal for tech-savvy professionals who demand reliability and efficiency in battery maintenance. ## Description For nearly all Li-ion NiMH and NiCd consumer cylindrical cells. 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. For Li-ion (Lithium ion) NiMH or NiCd rechargeable batteries. Four indepentent channels can be programmed individually or all together. Charge, discharge, condition or analyze one to four Li-ion, NiMH or NiCd rechargeable batteries. Back lighted LCD Digitally displays capacity, voltage, time elapsed and current. Adjustable charging rate from 200 to 2000 mA. (1000 mA max 4 channels) Five modes of operation for each channel: Charge: Discharge: Discharge Refresh: Charge Test: Quick Test: Negative delta V (-dV) full charge detection for NiMH/NiCd. CC/CV for Li-ion rechargeable cells. Adapter Power Supply input: 100 - 240 VAC, 50 -60 Hz. Adatper Power Supply output: 12Vdc 3.0A. Charge current: maximum 2000 mA. (1000 mA max all 4 channels) Maximum discharge current 1000 mA (700 mA for NiMH/NiCd) Maximum Charging Capacity 20,000 mAh Operating Temperature: 0 to 40 deg C Includes: C3400 Battery Charger Wall Adapter Power SupplyDC Power Car AdapterOperating Manual ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07T941JCF | | ASIN | B07T941JCF | | Amperage | 2000 Milliamps | | Best Sellers Rank | #136,836 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #16,053 in Electrical Equipment | | Brand | Carlsan | | Color | Black | | Connector Type Used on Cable | AC power plug, DC power plug | | Current Rating | 2000 Milliamps | | Customer Reviews | 4.6 4.6 out of 5 stars (256) | | Date First Available | June 18, 2019 | | Input Voltage | 240 Volts | | Is Discontinued By Manufacturer | No | | Item Dimensions D x W x H | 4"D x 7"W x 2"H | | Item model number | BT-C3400 | | Manufacturer | OIC Ltd | | Manufacturer | OIC Ltd | | Mfr Part Number | 1 | | Model Number | BT-C3400 | | Number of Ports | 4 | | Output Voltage | 12 Volts (DC) | | Product Dimensions | 7 x 4 x 2 inches; 1.26 Pounds | | Specification Met | RoHS, UL, CE, FCC | | UPC | 727908590937 | ## Product Details - **Brand:** Carlsan - **Color:** Black - **Output Voltage:** 12 Volts (DC) - **Product Dimensions:** 4"D x 7"W x 2"H - **Specification Met:** RoHS, UL, CE, FCC ## Images ![Opus Battery Charger Analyzer Tester for Li-ion NiMH NiCd Rechargeable Batteries C3400 BT-C3400 AA AAA C 18650 - Image 1](https://m.media-amazon.com/images/I/71tnuD6P-LL.jpg) ## Questions & Answers **Q: This is just a rebadged 3100 v2.2 why are you charging more than $10 more for the same device?** A: A couple of differences that I noticed: -- The BT-C3400 came with a car 12V power cable while my BT-C3100 did not. -- The BT-C3400 seems to have a continuous PWM fan control, varies the fan speed as needed so it is generally quieter while the fan on the BT-C3100 is either on or off, switches often. **Q: The opus c3100 when you remove screws inside there is a switch to change voltage so you can charge lifepo4 batteries. Does this have such a switch?** A: The switch is located inside the bottom cover, you need to remove the screws and then remove the bottom cover, there you will find a small 3 position switch with the different voltage options. What some people do is to use a dremmel to make a hole on the bottom cover so they can access the switch without having to remove the screws. Check google, there you will find tons of pictures and illustrations that show how to access the switch and so forth. Just keep in mind to use the correct voltage for the type of lithium battery that you will be charging, this is extremely important. **Q: Do you have a charger that will fit a 21700? i just received this and a klarus 21700 does not fit!** A: I do not. I no longer advertise that chargers fit 70mm cells. Most 70mm cells that are protected are actually longer than 70mm as you have found out. The sliding contacts in the C3400 will reach for a cell that is 70mm however most 21700 and other 70mm cells do not fit, they are too long. It is an aggravating situation as it seems most cell manufacturers are exceeding length. Sorry. **Q: Is this a cc/cv (constant current / constant voltage) charger?** A: The charge current can be adjusted to 200, 300, 500, 700 or 1000 Ma. The discharge rate can be adjusted 200, 300, 500 or 700 Ma for NiMH/NiCd and 1000 Ma for Li-ion. ## Frequently Bought Together - Opus Battery Charger Analyzer Tester for Li-ion NiMH NiCd Rechargeable Batteries C3400 BT-C3400 AA AAA C 18650 - Eneloop Panasonic BK-3MCCA8BA AA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 8-Battery Pack - Eneloop Panasonic BK-4MCCA10FA AAA 2100 Cycle Ni-MH Pre-Charged Rechargeable Batteries, 10-Battery Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/143888476-opus-battery-charger-analyzer-tester-for-li-ion-nimh-nicd](https://www.desertcart.tn/products/143888476-opus-battery-charger-analyzer-tester-for-li-ion-nimh-nicd) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-18*