Liitokala Lii-PD4 4 Channel 2A Battery Charger for 18650 21700 AAA AA LCD Display

The LiitoKala Lii-PD4 is an intelligent 4-channel universal battery charger designed to fast-charge Lithium-ion, LiFePO4, IMR, and Ni-MH/Ni-Cd rechargeable batteries simultaneously. Equipped with a digital LCD display, automatic battery chemistry detection, and individual slot management, the Lii-PD4 provides real-time charging metrics (voltage, current, time, capacity, and percentage) with built-in multi-layer protection.

Features

• 4 Independent Charging Channels: Charge up to four different battery chemistries or sizes at the same time without cross-interference.
• Real-Time LCD Screen: Displays charging percentage, battery voltage, charging time, accumulated capacity (mAh), and detected battery chemistry.
• Auto Chemistry & Polarity Detection: Automatically detects 3.7V Li-ion and 1.2V Ni-MH/Ni-Cd cells. Manual selection available for 3.2V LiFePO4 and 3.8V IMR batteries.
• Smart Current Selection (up to 2000mA): Intelligently allocates charging speed (500mA / 1000mA / 2000mA), with high-speed 2A fast charging available on Slot 4.
• 0V Battery Activation: Features low-voltage trickle charging to revive over-discharged Li-ion cells.
• Built-in Power Supply: Operates via a standard AC wall power cable (110–240V) or an optional 12V DC input.

Description

The LiitoKala Lii-PD4 Universal Battery Charger is a multi-functional charging solution for electronics enthusiasts, camera operators, flashlight owners, and DIY makers. Utilizing a microcomputer-controlled management system, the charger automatically analyzes cell chemistry, remaining voltage, and optimal charging current upon insertion.

Whether powering high-drain 21700 and 18650 Li-ion cells or standard AA/AAA Ni-MH rechargeables, the Lii-PD4 ensures maximum battery longevity through precise Constant Current / Constant Voltage (CC/CV) and negative delta V (-ΔV) charge management. Its clear backlit LCD eliminates all guesswork by showing exact voltage and capacity filled.

Specification

Compatible Device & Battery Types

Supported Battery Chemistries:

• Lithium-ion (Li-ion 3.7V / 3.8V IMR)
• Lithium Iron Phosphate (LiFePO4 3.2V)
• Nickel-Metal Hydride / Nickel-Cadmium (Ni-MH / Ni-Cd 1.2V)

Supported Battery Sizes:

• Li-ion / LiFePO4: 26650, 21700, 20700, 18650, 18490, 18350, 17670, 17500, 16340 (RCR123), 14500, 10440
• Ni-MH / Ni-Cd: AA, AAA, C, SC

Example Device Applications:

• High-power LED flashlights & EDC torches
• Vaping mods and electronic gear
• Wireless microphones, remotes, and audio receivers
• RC toys, battery packs, and custom DIY power projects
• Rechargeable portable fans, desk lamps, and emergency lights

Frequently Asked Questions (FAQ)

1. Can the LiitoKala Lii-PD4 charge protected 21700 batteries?

Yes, the spring-loaded sliding bays accommodate standard and flat-top/button-top 21700 and 18650 rechargeable batteries.

2. How do I enable 2A fast charging?

Fast charging at 2000mA (2A) is supported exclusively on Slot 4 when a single Li-ion cell is inserted into that bay.

3. Does it automatically stop charging when the battery is full?

Yes, the charger utilizes microcomputer auto cut-off (CC/CV for Li-ion, -ΔV for Ni-MH) to prevent overcharging once the battery reaches full capacity.

4. How do I select LiFePO4 or 3.8V IMR mode?

Upon inserting the battery, tap the MODE button within the first few seconds to toggle through 3.20V (LiFePO4) or 3.80V (IMR) chemistries.

Why Choose This

• All-in-One Compatibility: Eliminates the need for multiple single-purpose chargers by handling AA, AAA, 18650, 21700, and 26650 cells on a single device.
• Clear Real-Time Visibility: Unlike basic LED indicator chargers, the built-in LCD displays exact voltage levels and charged capacity in mAh.
• No Wall Adapter Needed: Features an integrated internal power supply—simply plug the standard AC cable directly into your wall socket.
• Safe & Intelligent: Microcomputer control protects against reverse polarity, overcharge, and defective/shorted batteries.

Safety Information

• Indoor Use Only: Operate the charger in a cool, dry, well-ventilated environment away from heat sources and direct moisture.
• Non-Rechargeable Warning: Do NOT attempt to charge non-rechargeable primary batteries (such as standard alkaline or lithium primary cells).
• Correct Chemistry Selection: Ensure 3.2V LiFePO4 and 3.8V IMR batteries are manually selected upon insertion to prevent over-voltage damage.
• Unattended Charging: Disconnect the unit from power when not in use or left unattended for extended periods.

Package Content

• 1 × LiitoKala Lii-PD4 4-Bay Battery Charger
• 1 × AC Power Cord (EU/Standard Plug)
• 1 × User Manual

Warranty & Returns

• 15-Day Easy Return or Replacement (Terms & Conditions Apply)
• Product must be returned in original condition with all included cables, accessories, and packaging materials.

You found it on efillooc!