LiitoKala Lii-M4 Type-C Smart Charger – AA/AAA & 18650/26650 with LCD Display

🔋 LiitoKala Lii‑M4 Smart 4‑Slot Charger (Type‑C)

Smart, compact, and versatile — the LiitoKala Lii‑M4 charges Li‑Ion (up to 26650, 21700, 18650, etc.) and Ni‑MH/Ni‑Cd (AA/AAA/C/SC) batteries. It also functions as a battery capacity tester and includes a 5 V/1 A USB output :contentReference[oaicite:1]{index=1}.

📋 Specifications

• Input: USB‑C 5 V / 2 A :contentReference[oaicite:2]{index=2}
• Output Voltage: Li‑Ion 4.2 V / IMR 4.35 V / Ni‑MH 1.48 V / LiFePO₄ 3.65 V :contentReference[oaicite:3]{index=3}
• Charging Current:
  • Slot 4: 1 000 mA × 2 slots
  • All slots default at 500 mA each :contentReference[oaicite:4]{index=4}
• Total Output Power: ~10 W :contentReference[oaicite:5]{index=5}
• Dimensions: 146 × 100 × 33 mm; **Weight:** ~206 g :contentReference[oaicite:6]{index=6}

✅ Compatibility

• Li‑Ion/IMR (3.7 V): up to 26650, 21700, 20700, 18650, 18500, 17670, 17335, 16340, 14500, 10440 :contentReference[oaicite:7]{index=7}
• Ni‑MH/Ni‑Cd: AA, AAA, A, C, SC :contentReference[oaicite:8]{index=8}

🔌 Features & Display

• Independent 4‑slot charging with selectable current and chemistry
• Battery capacity test mode — auto charge → discharge → recharge sequence :contentReference[oaicite:9]{index=9}
• Clear LCD display shows voltage, current, charge time, capacity (mAh), and battery type per slot :contentReference[oaicite:10]{index=10}
• 5 V/1 A USB output from slot 4 for powering small devices :contentReference[oaicite:11]{index=11}

🛡️ Safety Protections

• 0 V activation — can revive deeply discharged cells :contentReference[oaicite:12]{index=12}
• Overcharge, over-discharge, short-circuit, reverse-polarity and bad-cell detection :contentReference[oaicite:13]{index=13}
• Cut-off based on delta-V and time

📈 Real‑World Performance

• Highly accurate capacity measurement — users report repeatable and reliable readings :contentReference[oaicite:14]{index=14}
• Charges old/off-brand batteries that other chargers may reject :contentReference[oaicite:15]{index=15}
• USB‑C input may not work with all PD chargers — requires 5 V/2 A for full charging speed :contentReference[oaicite:16]{index=16}

📦 What’s in the Box

• LiitoKala Lii‑M4 charger unit
• USB‑C cable
• User manual

💡 Summary

The LiitoKala Lii‑M4 is an affordable yet smart 4‑slot charger and battery analyzer. It supports multiple chemistries, independent slot control, and a USB‑C input with USB‑power output. Users praise its accuracy and reliability, especially for “waking up” old batteries — though note the USB‑C input needs a proper 5 V/2 A supply for optimal performance.