LiitoKala Lii-S12 12+2 Bay Smart Universal Battery Charger – Intelligent LCD Fast Charger for 18650, 21700, LiFePO4, NiMH & 9V Batteries

Overview 

Stop charging multi-cell packs two or four slots at a time. The LiitoKala Lii-S12 12+2 Bay Smart Universal Charger provides a massive 48W powerhouse designed to safely manage, test, and charge up to 14 individual cells simultaneously. Equipped with a central microcomputer processing system, every single one of the 12 cylindrical slots operates on an entirely independent rail—allowing you to mix and match lithium-ion, NiMH, and LiFePO4 chemistries in the same session without cross-interference. Plus, it features two dedicated 9V square battery ports, making it the ultimate command station for robotics developers, drone operators, and field technicians.

Key Features 

• Patented Auto-Polarity Detection: Never worry about dropping a cell in backward again. The 12 primary cylindrical slots automatically detect positive and negative orientation instantly, protecting your gear while streamlining rapid swap outs.

• 14-Channel Hybrid Architecture: Houses 12 high-clearance multi-diameter bays alongside 2 integrated 9V NiMH charging terminals (85mA * 2) right on a single compact footprint.

• Intelligent Dynamic Amperage Scaling: Automatically scales charge rates based on load context. Drops down to a safe, temperature-controlled 0.5A when loaded across all 12 bays, or ramps up to a fast 1.0A charging rate on odd slots (1, 3, 5, 7, 9, 11) for quick turnarounds.

• Smart Backlit LCD Display: Cycles through vital performance logs per channel, displaying real-time battery chemistry type, current capacity percentage, precise voltage curve (V), and internal charging current (A).

• Hardware-Level 0V Cell Activation: Built-in rescue circuitry safely applies a delicate trickle current to wake up over-discharged or sleeping Lithium cells that standard protective chargers flag as dead or broken.

Technical Specifications 

Cylindrical Cell Compatibility Matrix 

• Lithium-Ion / IMR / LiFePO4: 26650, 21700, 20700, 18650, 18490, 18350, 17670, 14500, 16340 (RCR123), 10440

• Nickel-Metal Hydride / Cadmium: AA, AAA, C, SC (Sub-C)