OPUS BT-C3100 V2.2 Smart Battery Charger with LCD Display: LCD screen with battery status
For the tech enthusiast or hobbyist who relies on rechargeable batteries for everything from flashlights to drones, the OPUS BT-C3100 V2.2 smart charger is your go-to tool for maintaining peak battery performance. While most chargers simply power up your cells, this one acts like a personal battery analyst, helping you extend the life of your investments and avoid the frustration of dead devices when you need them most.
The LCD screen clearly shows voltage and capacity, so you can spot a weakening AA battery before it fails in your child's favorite toy. With adjustable charging and discharge currents, you can gently refresh old NiMH cells or quickly power up 18650s for your next outing. Its built-in fan keeps things cool during intensive cycles, giving you confidence that your batteries are handled safely. Compatible with a wide range of types including Li-ion, NiCd, and NiMH, this charger ensures your gear is always ready to go.
Features
- Multiple charging modes including charge, discharge, test
- Built-in cooling fan for heat dissipation
- Safety protections like overcharge and short circuit
- Adjustable charging current up to 2000mA
- Quick test mode for battery resistance
- LCD screen with battery status
General specs
- Brand: OPUS
- Model: BT-C3100 V2.2
- Seller: Joom
- ID: 68cb5cb36ba8010111467d74
- Functions: Charging
- Display Type: LCD
- Charging Modes: Smart Charging
- Battery Type Compatibility: Li-ion, NiCd, NiMH
- First listed by seller: 11/15/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
OPUS BT-C3100 V2.2 LCD screen with battery status
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POWEROWL FY1601 16 independent charging channels
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NOCO GENIUS1 35% smaller and more powerful
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BSIDE U1 True RMS current measurement
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BSIDE A2X USB Charging
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| Brand | OPUS | POWEROWL | NOCO | BSIDE | BSIDE | |
| Model | BT-C3100 V2.2 | FY1601 | pd20w | GENIUS1 | U1 | A2X |
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| Rating |
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| Price | $122.46 | $29.99 | $35.14 | $29.95 | $52.68 | $28.48 |
| Seller | Joom | Amazon | Gshopper | Amazon | Gshopper | Gshopper |
| Update | November 18, 2025 | November 9, 2025 | July 25, 2024 | November 9, 2025 | July 25, 2024 | July 25, 2024 |
