Liitokala Lii-K 1A 4 Slot Smart Battery Charger 1.2V 3.7V Power Bank AA AAA 18650 21700 lithium ion

LiitoKala Lii-K4 Smart Battery Charger - 4-Slot Universal LCD Charger for Li-ion/Ni-MH (18650/AA/AAA) with USB Output & Recovery Function
⭐ Key Features (Bullet Points)
SMART ALL-IN-ONE CHARGING
Auto-detects Li-ion/IMR/INR/Ni-MH batteries (Supports 26650, 18650, AA, AAA, etc.) & optimizes charging current.
REAL-TIME LCD MONITORING
Displays voltage, current, capacity (mAh), time, and battery type for each slot.
DUAL ROLE DESIGN
Acts as a 5V/2A power bank (USB output) when not charging lithium batteries.
ZERO-VOLTAGE REVIVAL
Revives over-discharged "dead" batteries with OU voltage activation tech.
SAFE & RELIABLE
8-layer protection: Over-charge/discharge, short-circuit, reverse polarity, over-current/voltage, high-temp protection.
FLEXIBLE CHARGING CONTROL
Manual current adjustment (300mA/500mA/1000mA per slot) via one-touch buttons.
MIXED-BATTERY SUPPORT
Charge different battery types/capacities in all 4 slots simultaneously.
INTUITIVE LED INDICATORS
Red (charging) → Green (full) → Red/Green blink (error/E-code alert).
📊 Technical Specifications
Parameter
Detail
Input
DC 5V/2A (Micro USB)
Output
5V/2A (USB port for power bank function)
Charging Current
Li-ion: 300mA×4 / 500mA×4 / 1000mA×2 slots

Ni-MH: 500mA×1-4 slots (auto-adjusted)
Compatible Batteries
Li-ion: 10440/14500/16340/18650/21700/26650, etc.
Ni-MH: AAAA/AAA/AA/C/D
Protection
Short-circuit/Over-current/Over-voltage/Reverse Polarity/Overheating
Material
Fire-resistant ABS+PC Shell
Dimensions
135×95×30mm (L×W×H) / Weight: 165g
Operating Temp.
0°C – 40°C (32°F – 104°F)
🛠️ User Guide Highlights
Simple Operation:
Insert battery → Screen lights up (select current during 5-sec slot blink).
Press slot button to toggle charging current (300/500/1000mA).
Monitor real-time stats: Voltage/Current/Capacity/Time.
Status Indicators:
🔴 Solid Red = Charging | 🟢 Solid Green = Fully Charged | 🔴🟢 Blinking = Error (Check "-E" code).
Note: USB output disabled during Li-ion charging.
⚠️ Important Notes
✅ Use Only rechargeable Li-ion/Ni-MH batteries.
❌ Avoid exposure to rain, direct sunlight, or extreme temps (<0°C or >40°C).
🔋 Keep away from children (adult supervision recommended).
📦 Package Includes
1× LiitoKala Lii-K4 Charger
1× Micro USB-C Cable (No power adapter)