The LiitoKala Lii-D4XL charger is a versatile and intelligent charging solution designed for users who require a high degree of flexibility, safety, and control when recharging a wide range of cylindrical batteries. With four fully independent slots and the ability to charge multiple battery chemistries, including lithium-ion (3.7V and 3.8V), lithium iron phosphate (3.2V), and NiMH/NiCd (1.2V), this device offers a comprehensive approach to battery maintenance. It incorporates an integrated AC input port that supports a voltage range of 110 to 240V at 50/60Hz, enabling global usability and seamless performance both at home and during travel. The built-in power supply eliminates the need for external adapters, ensuring a clean and efficient charging setup.

The Lii-D4XL stands out thanks to its smart microcomputer management system that intelligently selects the appropriate charging current based on the battery type and condition. The available current settings include 300mA, 500mA, and 1000mA, offering flexibility for delicate low-capacity cells as well as high-drain larger formats. This adaptability not only enhances user control but also contributes to prolonging battery life by delivering optimized charging tailored to each individual cell. The charger can automatically detect standard lithium-ion and NiMH batteries, while the user can manually select lithium iron phosphate (LiFePO4) or 3.8V high-voltage lithium-ion cells (IMR), ensuring compatibility with specialized chemistries.

At the heart of the Lii-D4XL is a clear and informative LCD screen that displays key metrics during the charging process, including voltage, capacity, elapsed time, and charging percentage. Upon connection to a power source, the display briefly illuminates all segments for three seconds before transitioning to standby unless batteries are inserted. Once a cell is detected in any of the four slots, the corresponding slot number and battery type begin to flash on-screen, prompting the user to select the appropriate chemistry via the Mode button. After five seconds, if no action is taken, the charger defaults to its automatic detection mode and begins charging. The display continues to update in real time, showing the progress of each battery, and when fully charged, it reads 100% with an “End” message in the lower corner, clearly indicating the conclusion of the charging cycle.

Beyond the standard cylindrical battery support, the Lii-D4XL also features dual 9V battery charging ports located on either side of the LCD panel. These ports provide approximately 85mA of current per battery and include a red/green LED system to indicate charging and standby or completion states. This additional functionality enhances the device’s utility, allowing users to manage a broader range of battery types with a single unit. The Lii-D4XL is also equipped with advanced safety protocols, including protection against overcharging, over-discharging, short circuits, and reverse polarity. Furthermore, it can detect faulty or non-rechargeable batteries and suspend operation to prevent unsafe conditions, giving users peace of mind during every charging session.

A unique feature of this charger is its 0V activation function, which is especially useful for reviving deeply discharged lithium-ion batteries. While cells measuring between 1.65V and 2.20V cannot be fully charged, the charger applies a trickle current to gradually bring them back to a voltage level suitable for regular charging, increasing the chances of battery recovery. Charging is managed using a combination of constant current and constant voltage modes, with a cut-off current below 100mA, ensuring that batteries are safely and fully topped off without the risk of overcharging.

Compatible with a broad array of battery sizes, the Lii-D4XL can accommodate Li-ion, IMR, and LiFePO4 batteries such as 26650, 21700, 20700, 18650, 18490, 18350, 17670, 17500, 16340 (RCR123), 14500, and 10440, along with NiMH/NiCd formats like AA, AAA, A, SC, C, and D. This makes it an ideal charging hub for flashlight users, vapers, photographers, technicians, and hobbyists who manage diverse battery inventories. The user-friendly interface, combined with precise manual controls, advanced safety mechanisms, and broad compatibility, positions the LiitoKala Lii-D4XL as a reliable, efficient, and indispensable tool for anyone serious about battery care. Whether used in a workshop, lab, or on the go, it delivers robust performance and peace of mind, serving as a smart assistant for every power need.

Features:
1. It adopts AC110-240V 50/60Hz input (standard built-in power supply), four independent charging slots, and a microcomputer management system
2. The charging current is intelligently and automatically selected, with a total of 3 levels (300mA/500mA/1000mA).
3. LCD charging display can display charging percentage, voltage, capacity, and also display battery type NiMH 1.2V,Li Fe 3.2V, Li ion 3.7V, Li ion 3.80V (IMR).
4. The 9V charging battery port is designed on both sides of the display screen, and can simultaneously charge two batteries, with each charging current of approximately 85mA,Red light on when charging, green light on when fully charged or standby
5. It can automatically identify lithium ion (Li Ion 3.7V) battery and nickel metal hydride (Ni MH) battery, and manually select Iron(III) phosphate (LiFePO4) battery and Li Ion 3.80V battery (IMR)
6. With 0V voltage activation function, 1.65-2.20V cannot be charged (but there will be activated current trickle charging).
7. It has multiple safety protection functions such as overcharging, over discharging, short circuit, and reverse connection protection, and can intelligently and automatically identify faulty batteries;
8. Charging mode: constant current and voltage.

Parameters:
Input power: AC 110-240V 50/60Hz / DC 12V2A
Output voltage:
DC 4.2V for Li-Ion
DC 4.35V for IMR
DC 3.65V for LiFePO4
DC 1.48V for NiMH/NI-Cd
Output current:
 Li-Ion/IMR/LiFePO4: 1000mA*4, 500mA*4, 300mA*4
NiMH/NiCd: 1000mA*4, 500mA*4300mA*4
9V battery: 85mA*2
Constant voltage charging, cut-off current: <100mA;
Standby current of external power supply: <15.0mA;
Compatible battery: NI-MH /Cd,AA AAA A SC Sizes D C
Li-ion/IMR/LiFePO4: 26650,21700,20700, 18650, 18490, 18350, 17670, 17500, 16340(RCR123), 14500, 10440.

SHIPPING
The final shipping cost and estimated delivery timeframe will be available to you during checkout. Currently, we offer 3 International shipping methods which are steady and easy to track. Priority worldwide shipping, Premium ( Partial countries) and a faster Express shipping. The estimated times stated below are not guaranteed. An international package could experience delays like postal strikes or severe weather or Cov-19 situation. All shipping ways, PO Box address is not acceptable.

For some flashlights, there's a pure battery inside（phone charging）,If We can not ship your packages via USPS or DHL,we'll ship your package in another way.

Note:
When you place an order for just the batteries, for easy shipping, faster and safe delivery, the batteries are placed in the flashlights.

If you don’t receive your order within the estimated time frame provided below and suspect that it might be lost in transit, please contact Flashlightgo Support ( support@flashlightgo.com ) and we can look into the order with the courier. Lost-in-transit requests must be submitted to Flashlightgo Support within 3 months of the date of shipping or before the courier archives the tracking information.

Option 1.
Express by DHL/UPS/Fedex/Aramax/SF etc ( there may be tax need to pay in this way),
The estimated time of delivery is usually 3-7 work days depending on the country. Includes detailed tracking and confirmation of delivery.

Option 2.
Premium ( 6-10days, All tax and Duty Paid),
All tax and duty are prepaid to carrier by Flashlightgo before shipping, so you dont need to pay any tax or duty when you get it.

Option 3.
Priority shipping(1-2 Weeks, average 10 days)
If we marked it is with all tax and duty paid, all tax and duty are prepaid to carrier by Flashlightgo before shipping, so you dont need to pay any tax or duty when you get it.

Learn more,Please click on Here.

To ensure that you get the desirable product, we allow a seven-day product return period. Any product return application outside this period will not be entertained.
All returned product must be unused and the original package should be kept.

Return：
We do not offer return for personal products like socks and hats or food, magazine and fragile or dangerous products The original receipt must be available for application of return.

Discount products：
No product return for discount products

Gifts products：
If the item is marked as a gift when purchased and shipped directly to you, it cannot be exchanged , refunded or warranty.

Exchange：
We only replace items if they are defective or damaged.
Exchange service are offered only to wrong deliveries or product damage not caused by client. If needed, please email to info@flashlightgo.com.

Warranty
How long is the warranty period?
Flashlightgo warrants to the original purchaser that the Product(s) shall be free of any defect in material or workmanship for a period of one year for labor and one year for parts from the date of the original order except the items listed below:
Chargers,Batteries and Other Accessories: 3 months warranty

Should the Product(s) supplied by Flashlightgo prove defective because of improper workmanship or material as reasonably determined by us, Flashlightgo agrees, at its option, to either repair or replace the Product free of charge, excluding any shipping or handling charges.

Learn more,Please click here.