Universal Rechargeable Battery Charger for 18650, AA, AAA, Li-ion, NiMH, LiFePO4
Universal Rechargeable Battery Charger for 18650, AA, AAA, Li-ion, NiMH, LiFePO4
LiitoKala CH2 & Lii-CH4 Smart Universal Battery Charger – LCD Display, For Li-ion / IMR / LiFePO4 / Ni-MH / Ni-Cd / 1.5V Li-ion Rechargeable Batteries
Product Description
The LiitoKala CH2 and Lii-CH4 intelligent chargers offer a professional, safe, and convenient way to charge almost all your cylindrical rechargeable batteries. Using advanced microcomputer control, each slot is independently managed to deliver the optimal charging current and voltage. Both models support 3.7V/3.8V Li-ion, LiFePO4, Ni-MH/Ni-Cd, and the increasingly popular 1.5V Li-ion batteries (4.2V to 1.5V regulated). The CH2 is a compact 2-slot charger, while the Lii-CH4 expands capability to 4 independently controlled slots – perfect for users with larger battery inventories. Simply choose the model that fits your needs.
Key Features
Wide Battery Compatibility: Charges 3.7V/3.8V Li-ion (IMR), 3.2V LiFePO4, 1.2V Ni-MH/Ni-Cd, and 1.5V Li-ion cells. Compatible sizes include 26650, 21700, 20700, 18650, 18490, 18350, 17670, 17500, 16340 (RCR123), 14500, 10440, AA, AAA, SC, and C.
Intelligent Automatic Recognition: Automatically identifies 3.7V Li-ion, Ni-MH/Ni-Cd, and 1.5V Li-ion batteries. A manual mode button allows you to select 3.2V LiFePO4 or 3.8V IMR within the first 9 seconds after insertion.
Selectable Charging Currents (per slot): Choose between 500mA for gentle charging or 1000mA for faster speeds (1.5V Li-ion cells are fixed at 500mA by default). Please refer to the specifications below for concurrent charging limits depending on the model.
0V Battery Activation: Integrated trickle-current activation attempts to revive over-discharged batteries. Note: cells between 1.65V–2.20V cannot be charged normally but will receive a recovery trickle current.
Multiple Comprehensive Safeguards: Protection against overcharge, over-discharge, short circuit, and reverse polarity. Damaged or non-compliant batteries are intelligently detected and rejected.
Constant Current / Constant Voltage (CC/CV) Charging: Ensures a safe, full charge with a precise 100mA cut-off current termination.
Clear, Easy-to-Read LCD Display: Indicates real-time charging progress and allows you to confirm the selected battery type and current.
Universal USB-C Input: Conveniently powered via USB-C port. A USB-C charging cable is included in the box; simply pair with your own USB mains adapter.
Important Safety Warnings (Please Read Before Use)
This charger is exclusively designed for the rechargeable battery types specified. Do not attempt to charge other chemistries.
Always observe the battery manufacturer’s recommended maximum charging current. Do not exceed it.
Use a high-quality 5V DC USB adapter capable of delivering at least 2.0A.
The charger may become warm during operation. Keep out of reach of children.
When not in use or when charging is complete, disconnect the USB power and remove the batteries.
For indoor, room-temperature use only. Keep away from moisture and heat sources.
The displayed data is for reference. For exact measurements, use professional testing instruments.
How to Operate
Setting Charging Current: After inserting batteries, long press the function button (MODE button on CH2, or individual slot button 1–4 on Lii-CH4) to toggle between 500mA and 1000mA.
Selecting Battery Type: Within 9 seconds of inserting the batteries, single click the button to manually cycle through Li-ion 3.70V, LiFePO4 3.20V, and Li-ion 3.80V (IMR). Ni-MH/Ni-Cd and 1.5V Li-ion types are auto-detected and cannot be manually changed. Once charging has started, the battery type selection cannot be altered.
Charging 1.5V Li-ion: Insert a 1.5V rechargeable lithium cell; it will be recognized automatically and charged at a fixed 500mA current.
Technical Specifications
Specification |
LiitoKala CH2 (2-Slot) |
LiitoKala Lii-CH4 (4-Slot) |
Input |
USB 5V DC, minimum 2.0A |
USB 5V DC, minimum 2.0A |
Output Voltage |
4.20V (Li-ion), 4.35V (IMR), 3.65V (LiFePO4), 1.48V (Ni-MH/Cd) |
4.20V (Li-ion), 4.35V (IMR), 3.65V (LiFePO4), 1.48V (Ni-MH/Cd) |
Charging Current |
Li-ion/IMR/LiFePO4: 1000mA x 2 or 500mA x 2 |
Li-ion/IMR/LiFePO4: 1000mA x 2 or 500mA x 4 |
1.5V Li-ion Charge |
Fixed 500mA |
Fixed 500mA |
Cut-off Current |
≤100mA |
≤100mA |
Standby Current |
<50mA |
<50mA |
Dimensions (L×W×H) |
Approx. 139 × 70 × 35 mm |
Approx. 144 × 99 × 35 mm |
Weight (Charger Only) |
Approx. 112 g |
Approx. 179 g |
What's in the Box
1 x LiitoKala CH2 or Lii-CH4 Battery Charger (model as ordered)
1 x USB-C Charging Cable
1 x User Manual
Important: A USB mains power adapter (plug) is NOT included. You must use a standard USB power adapter with 5V DC, minimum 2.0A output (purchased separately).
Pick Your Perfect Fit
Select the LiitoKala CH2 for a compact, travel-friendly dual-bay solution, or choose the LiitoKala Lii-CH4 for maximum charging capacity with four independent slots. Both deliver the same trusted LiitoKala reliability and safety.
