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The Ultimate 4-in-1 Smart Charger with Touch Control! The LiitoKala Lii-M4S is a revolutionary 4-slot smart charger that goes far beyond simple charging. Featuring an upgraded touch control interface and 4 intelligent modes, it gives you complete control over your battery maintenance.
4 Intelligent Modes:
CHARGE Mode: Smartly identifies battery type and fully charges with auto-stop safety.
DISCHARGE Mode: Eliminates battery memory effect and maintains battery health.
TEST Mode: Measures the real mAh capacity of your batteries, helping you identify fake or degraded cells.
STORAGE Mode: Automatically adjusts the battery voltage to an ideal 3.7V for long-term storage, extending battery lifespan.
Equipped with a modern USB Type-C input, the Lii-M4S can be powered by any standard USB adapter, power bank, or laptop. The Slot 4 USB output even lets you use a charged 3.7V Li-ion battery as an emergency power bank for your phone. With a high-definition LCD display and a compact 146×100×33mm body, this is the ultimate all-in-one solution for your household and outdoor power needs.
( IMPORTANT: Please select your preferred variant. The "Charger Only" variant includes the charger and Type-C cable. The "US/EU/UK Plug" variants include the corresponding wall adapter.)
4 Intelligent Modes: Charge, Discharge, Capacity Test (TEST), and Storage Mode (maintains battery at 3.7V for long-term storage).
Upgraded Touch Control: Sensitive touch buttons replace traditional mechanical switches for a modern, durable, and easy-to-use interface.
Built-in USB Output (Slot 4): Insert a charged 3.7V Li-ion battery into slot 4 and use it as an emergency power bank for your phone!
4-Slot Independent Control: Charge up to four different batteries simultaneously with independent monitoring.
High-Definition LCD Display: Real-time display of battery voltage, current, capacity, elapsed time, and working mode for all 4 slots.
Adjustable Current (0.3A/0.5A/0.7A/1.0A): Multiple current options to match different battery sizes and capacities for optimal charging.
Comprehensive Compatibility: Supports 3.7V Li-ion (18650, 21700, 26650, etc.) and 1.2V NiMH (AA, AAA) batteries.
6-Layer Safety Protection: Over-discharge, over-temperature, over-voltage, over-charge, short circuit, and over-current protection.
Brand: LiitoKala
Model: Lii-M4S
Input: USB Type-C (5V / 2A)
USB Output: 5V / 1A (Slot 4, Power Bank Function)
Output Current: 0.3A × 4 / 0.5A × 4 / 0.7A × 2 / 1.0A × 2 (Adjustable)
Compatible Chemistries: 3.7V Li-ion, 1.2V NiMH
Compatible Sizes: 18650, 21700, 26650, 16340, AA, AAA, and more
Display: LCD Screen with Touch Control
Safety Features: 6-layer protection (over-discharge, over-temperature, over-voltage, over-charge, short circuit, over-current)
Dimensions: 146mm × 100mm × 33mm
Weight: Approx. 250g
Plug Options: No Adapter (Charger + Cable Only) / US Plug / EU Plug / UK Plug
Household Battery Management: Charge and maintain all your 18650, 21700, and NiMH batteries for flashlights, remotes, and toys.
Professional Battery Testing: Use TEST mode to measure real capacity and identify fake or degraded cells.
Long-Term Storage: Use STORAGE mode to prepare batteries for seasonal storage, extending their lifespan.
Emergency Power Bank: Use Slot 4 with a charged battery to top up your phone during outdoor trips or power outages.
Travel & Office: Compact and Type-C powered, it's the perfect travel companion for all your battery needs.
Q1: What is the difference between the variants?
A1: The "Charger Only" variant includes the Lii-M4S charger and a Type-C cable. The "US/EU/UK Plug" variants additionally include a wall adapter with the corresponding plug type. Please select the correct one for your region.
Q2: Does this charger come with batteries?
A2: NO. This listing is for the charger and cable (and optional adapter) only. Batteries are NOT included.
Q3: How does the Power Bank function work?
A3: Insert a charged 3.7V Li-ion battery into slot 4, then plug your phone or USB device into the USB output port on the side. The charger will use the battery's energy to charge your device.
Q4: What is STORAGE mode?
A4: STORAGE mode automatically adjusts the battery voltage to an ideal 3.7V for long-term storage. This helps extend battery lifespan and maintains health during periods of non-use.
Q5: Can I charge different types of batteries at the same time?
A5: Yes! The Lii-M4S features 4 independent slots with automatic identification. You can charge a 3.7V Li-ion battery in slot 1 and a 1.2V NiMH battery in slot 2 simultaneously.
Free Shipping: Enjoy free shipping on all orders over $65. For orders under $65, the shipping cost is $8.99.
Delivery Time: Once shipped, orders typically arrive within 7–15 business days.
Easy Returns: We want you to be completely satisfied. If you're not, you can return your product within 30 days of receiving your order. Please ensure the items are unused and in their original condition. For return instructions, please contact our support team.
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At OneAndes, we are committed to providing high-quality cylindrical lithium-ion batteries for your drones, vacuums, garden tools, and other power needs. If you are not completely satisfied with your purchase, we are here to help. Please read our full return policy below before initiating a return.
1. Return Window
You have 30 calendar days from the date you received your item(s) to request a return. Any return request submitted after 30 days will not be eligible for a refund or exchange.
2. Eligibility Conditions
To qualify for a return, all items must meet the following conditions:
Condition: Items must be unused, undamaged, and in the same condition that you received them.
Packaging: Items must be returned in their original packaging with all accessories, manuals, and protective covers intact.
Proof of Purchase: A valid receipt, order confirmation email, or proof of purchase must accompany all returns.
Non-Returnable Items:
Batteries that have been installed, used, or show any signs of wear.
Items marked as “Final Sale” or “Clearance” at the time of purchase.
Customized or special-order products.
Gift cards.
If a returned item fails to meet these conditions, we reserve the right to deny the return or charge a restocking fee.
3. How to Initiate a Return
Follow these steps to return your product:
Contact Us: Email our support team at support@oneandes.com with your order number and the reason for return. We aim to respond to all return requests within 24 hours on business days.
Receive RMA: We will provide you with a Return Merchandise Authorization (RMA) number and return instructions. Do not ship any item without an RMA number.
Pack Securely: Place the item in its original packaging, include all accessories, and clearly write the RMA number on the outside of the box.
Ship to Our US Warehouse: Ship the package to the following address:
OneAndes Returns
10320 6th St
Rancho Cucamonga, CA 91730
USA
*Important: Lithium-ion batteries are classified as hazardous materials (Class 9). Please follow the shipping guidelines provided in Section 4 below. We recommend using a trackable shipping service and purchasing shipping insurance, as we cannot guarantee receipt of your returned item.*
4. Return Shipping Costs
Defective or Incorrect Items: If the item you received is defective, damaged in transit, or different from what you ordered, OneAndes will cover the return shipping cost. In this case, we will provide you with a prepaid return shipping label.
Buyer’s Remorse / Non-Defective Returns: If you are returning an item for any other reason (e.g., no longer needed, ordered the wrong model), you are responsible for the return shipping costs. You must prepay the return shipping cost using a trackable carrier that accepts lithium batteries. We do not provide prepaid return labels for non-defective returns.
Lithium Battery Shipping Regulations: By law, all returns must be shipped in compliance with applicable dangerous goods regulations. We will provide guidance on proper packaging and labeling. Failure to comply may result in carrier refusal, seizure, or additional fees. We are not responsible for returned items lost or rejected by the carrier due to improper shipping.
5. Refunds
Once we receive and inspect your return at our Rancho Cucamonga, CA facility, we will notify you via email of the approval or rejection of your refund.
Approved Refunds: If approved, your refund will be processed to your original method of payment within 5 to 10 business days. Please note that depending on your bank or credit card issuer, it may take additional time for the credit to appear on your statement.
Partial Refunds: In certain situations, only partial refunds may be granted:
Items not in original condition, missing parts, or damaged for reasons not due to our error.
Items returned more than 30 days after delivery (reviewed on a case-by-case basis).
Non-Refundable Fees: Original shipping charges are non-refundable unless the return is due to our error (defective product or incorrect shipment).
Restocking Fee: We do not charge a restocking fee for defect-free returns, but we may deduct the return shipping cost, which will be deducted from your refund.
6. Exchanges
We replace items only if they are defective or damaged upon arrival. If you need to exchange a defective item for the same product, please contact us at support@oneandes.com. Exchanges are subject to product availability.
If you ordered the wrong battery size or model, please follow the standard return process above and place a new order for the correct item.
7. Damaged or Missing Items
If your package arrives visibly damaged, please take photos of the package before opening and contact us immediately. We will work with the shipping carrier to file a claim and arrange for a replacement or refund. Damaged or missing item claims must be reported within 7 calendar days of delivery. For immediate assistance, you may also call us at (213) 316-8849.
8. Order Cancellation
You may cancel your order without penalty if it has not yet been shipped. To cancel, email us at support@oneandes.com as soon as possible. If the order has already been processed or shipped, you will need to follow the standard return process upon receipt.
9. Warranty
All OneAndes batteries are backed by a 12-month limited warranty against defects in materials and workmanship. This warranty does not cover damage caused by misuse, improper charging, unauthorized modifications, normal wear and tear, or use outside of manufacturer specifications. For warranty claims, please contact our support team.
10. Contact Us
If you have any questions about our Return & Refund Policy, please reach out:
Email: support@oneandes.com
Phone: (213) 316-8849 (Mon-Fri, 9 AM – 5 PM Pacific Time)
Mailing Address: 10320 6th St, Rancho Cucamonga, CA 91730, USA
We aim to respond to all inquiries within 24 hours during business days. Please include your order number for faster assistance.
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