ShenZhen XTAR Electronics Co., Ltd
                                                                                                           
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VC4SL 21700 Battery Charger 4 Bay Smart Battery Charger 3A USB C Input

Price Negotiable
Price: $12.8/pcs
MOQ: 500
Delivery Time: 7-30 Days
Brand: XTAR
Product Description
VC4SL 4-Bay Smart Battery Charger, 3A Fast Charging USB-C with QC3.0 for 18650/21700 Li-ion & Ni-MH Batteries
XTAR VC4SL - 4-Bay 3A QC3.0 Fast Smart Charger
  • 3A Fast Charging per slot (Max 3A) for Quick Battery Replenishment
  • QC3.0 USB-C Input with Fast Charging Technology
  • 4 Independent Charging Slots with Manual Current Adjustment
  • Battery Capacity Testing & Storage Functions
  • 0V Activation Revives Over-Discharged Batteries
Item Specification
Model VC4SL
Input QC3.0 (5V3A/9V2A)
Constant Current Li-ion: 3A×1 / 2A×2 / 1A×4 / 0.5A×4 / 0.25A×4
Ni-MH: 0.5A
Cut-Off Voltage Li-ion: 4.20±0.05V
Ni-MH: 1.45±0.1V
Cut-Off Current ≤120mA
Operating Temperature 0°C ~ 40°C
Size L156mm × W115.5mm × H35mm
Weight 212g
Compatibility 3.6/3.7V Li-ion (10440~26650, including protected 21700), 1.2V Ni-MH/Ni-CD (AAA/AA/A/SC/C)
Certification CE / RoHS / FCC
Multi-Functional 4-Bay Charger for Fast Charging & Battery Maintenance
Fast Charging for High-Capacity Batteries: 3A per slot for quick charging of 21700/18650 cells
High-Power Flashlights & EDC GEAR: Revives dead batteries with 0V activation
Outdoor & Tactical Equipment: Capacity testing to monitor battery health
Gaming Controllers & Remotes: Charges AA/AAA Ni-MH batteries
Home & Professional Use: Multi-protection mechanisms for safe charging
XTAR VC4SL Smart Battery Charger product image
About XTAR

Established in 2006, XTAR is a leading provider of high-quality lithium-ion batteries, smart chargers, and LED flashlights. Based in Shenzhen, we integrate R&D, production, and sales to deliver innovative power solutions. With over 20 years of expertise, XTAR is your trusted partner for reliable energy products, offering customized solutions for OEM and wholesale clients.

Global Layout

XTAR has established business and service relations with more than 150+ countries around the world.

XTAR global business map showing worldwide presence
Company Timeline
2005: Launched PK flashlight, laying groundwork for battery and charging expertise
2009: Developed WP6 (6-slot charger) for diving flashlights, pioneering three-stage charging technology (Patent No.: 201720828840.6) to solve overheating and incomplete charging issues, officially entering the charger market.
2011: WP2II - First charger with 0V activation + USB output, reviving over-discharged lithium-ion batteries.
2012: First charger with selectable charging current (0.5C) to extend battery lifespan.
2014: VP2 - Market's first charger compatible with all lithium-ion battery voltages.
2016: DRAGON VP4 Plus - First charger to precisely measure battery capacity & internal resistance.
2019: Integrated charger with charging, capacity calibration, storage (3A fast charge per slot, auto/manual current adjustment).
2020: BC4 - First universal charger for AA/AAA 1.5V lithium & 1.2V NiMH batteries.
2023: Pioneered CVSA (Curve-based Voltage Sensing) tech for more precise, safer NiMH battery charging.
2024: VX4 - First charger for 1.5V lithium batteries, supporting 4 battery types with 4 intelligent charging protocols.
March 2025: L4 Pro -- AA/AAA smart charger (universal brand compatibility) with NiMH battery shallow/deep restoration and simple operation.
July 2025: VX2 Pro -- Industry's first dual-slot fully independent control charger, retaining VX4's core functions.
September 2025: L8 BOX - Patented charging + storage all-in-one case with conical magnetic design, redefining charger aesthetics.
Manufacturing

We operate our own factory with efficient production processes ensuring precise production cycles. Manufacturing under our original brand guarantees product consistency and provides convenient maintenance and after-sales service. XTAR integrates the brand values of safety, reliability, and innovation into every product.

XTAR manufacturing facility and production process
Global Certifications
XTAR global certifications including ISO-9001, EMC, FCC, and ROHS
Frequently Asked Questions
Can I have a sample order for Battery/Charger/Flashlight?

Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.

What about the lead time?

Sample needs 1-2 days, mass production time needs 3-7 working days. Goods with our logo are shipped 7 days after payment is received.

Do you have any MOQ limit for Battery/Charger/Flashlight?

Low MOQ, 5 - 10 pcs for sample checking is available.

How do you ship the goods and how long does it take to arrive?

DHL, UPS, FedEx or TNT and others shipping method is available. Arriving time depends on the way you choose. Airline and sea shipping also optional. Warehouse in Texas, shipment is free in US.

Is it OK to print my logo on the product?

Yes. We have our own R&D Department and Factory. Both OEM and ODM are acceptable.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company ShenZhen XTAR Electronics Co., Ltd
Location 5th Floor, No.77 Xinhe Rd, Shangmugu, Pinghu Area, Longgang District, Shenzhen, Guangdong, China
Contact Person Dylan

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