XTAR L4 Pro 4-Slot Smart Charger for AA & AAA - LCD Display, 1.2V NiMH & 1.5V Li-ion Battery Charger with Capacity Test (DisCHG) & Refresh Mode, Type-C Input (0.5A/1A)
Description
【Product Description】
The ultimate AA & AAA battery charging station for your home, office, and emergency kits. The XTAR L4 Pro 4-Slot Smart Charger is specially engineered to perfectly charge both 1.2V NiMH/NiCd and the newest 1.5V constant voltage Li-ion batteries (AA and AAA).
Featuring a crystal-clear LCD display, you can see the real-time charging status, battery type, and capacity for each of the four independent slots. The L4 Pro is not just a charger; it's a battery doctor. Its unique DisCHG (Discharge) Mode performs a full charge-discharge-recharge cycle to test the true capacity of your cells, helping you weed out old or fake batteries.
With the Refresh Mode, you can safely revive heavily used or over-discharged NiMH batteries, restoring them to maximum capacity. Equipped with advanced CVSA technology, the L4 Pro charges NiMH batteries faster, with less heat, and ensures they are truly packed full.
( IMPORTANT: This listing is for the charger and Type-C cable only, or the charger, cable, and QC3.0 adapter, depending on the variant you choose. Rechargeable batteries are NOT included.)
【Key Features】
-
Dedicated AA/AAA Universal Compatibility: Automatically detects and charges both 1.2V NiMH/NiCd and the new 1.5V constant voltage Li-ion AA/AAA batteries.
-
Clear LCD Display: Shows real-time charging status (CHG), discharge status (DisCHG), battery type, and capacity percentage for each of the 4 independent slots.
-
Smart DisCHG Capacity Test: Takes the guesswork out of battery health. It automatically charges, discharges, and recharges the battery to accurately measure its true mAh capacity.
-
Refresh Battery Revival Mode: For old or frequently used NiMH batteries, the Refresh mode performs deep discharge-recharge cycles to eliminate memory effects and restore maximum capacity.
-
Advanced CVSA Charging Technology: Optimizes NiMH charging by detecting peak voltage precisely, ensuring batteries get packed full while running cooler and extending their lifespan.
-
Intelligent Error Detection: If a wrong or damaged battery is inserted, the L4 Pro will display an "Err" message on the screen, preventing damage to your batteries and the charger.
-
Multiple Safety Protections: Features 8 layers of protection, including overcharge, over-discharge, overvoltage, short circuit, and reverse polarity protection, plus soft-start functionality.
【Parameters & Specifications】
-
Brand: XTAR
-
Model: L4 Pro
-
Input: 5V = 2A (Type-C)
-
Charging Current: 0.5A x 1 / 0.5A x 4
-
Cut-off Voltage: 1.45V ± 0.1V
-
Cut-off Current: ≤100mA
-
Operating Temperature: 0℃ ~ 40℃
-
Compatible Batteries: 1.5V AA/AAA Li-ion, 1.2V AA/AAA NiMH/NiCd
-
Dimensions: 102mm × 80mm × 27.5mm
-
Weight: 88g
-
Package Options: Charger + Type-C Cable / Charger + Type-C Cable + QC3.0 Adapter
-
Note: Batteries are NOT included.
【Applications】
-
Household & Daily Use: Keep all your TV remotes, wireless mice, toys, and flashlights powered by fresh AA/AAA batteries.
-
1.5V Li-ion Enthusiasts: Perfectly charge your new high-capacity 1.5V AA/AAA lithium batteries that drop in and last longer than alkalines.
-
Battery Maintenance: Use the Refresh mode to bring old NiMH batteries back to life, saving money on replacements.
-
Emergency Preparedness: Keep a set of fully charged AA/AAA batteries ready for your emergency radio or flashlight.
【Frequently Asked Questions (FAQ)】
Q1: Does this charger require manual settings?
A1: No! The L4 Pro is fully automatic. It instantly detects whether you have inserted a 1.2V NiMH or a 1.5V Li-ion battery and applies the perfect charging current. The LCD screen will show you exactly what it is detecting.
Q2: What is DisCHG mode?
A2: DisCHG is a capacity testing mode. You can press the button to enter this mode. The charger will fully charge the battery, then discharge it to measure the real mAh capacity, and finally recharge it. This is perfect for checking if old batteries are still good.
Q3: Can it really fix my old NiMH batteries?
A3: Yes! The Refresh Mode is designed specifically for older, over-used NiMH batteries. By running deep discharge-recharge cycles, it can effectively eliminate the "memory effect" and restore them to their maximum usable capacity.
Q4: Is it safe to charge a 1.5V Li-ion battery with this charger?
A4: Absolutely. The L4 Pro is one of the few chargers specifically designed to handle 1.5V constant voltage Li-ion batteries safely, with a precise cut-off voltage for this chemistry. Never use a charger not designed for 1.5V Li-ion cells with these batteries.
Q5: What is the CVSA technology?
A5: CVSA (Constant Voltage Slope Analysis) is a smart detection algorithm used for NiMH batteries. It detects the exact point where the battery is truly full. This prevents overcharging, reduces heat, and ensures you get the full capacity out of your NiMH cells.
Shipping and Returns
-
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.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Security
Refund Policy
OneAndes Return & Refund Policy
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.