XTAR MC4S 4-Bay Smart Charger with 16340 650mAh 3.7V Protected Battery Bundle | Type-C Portable Compact Kit for Small Flashlights and Gadgets

Product Description

This bundle combines the ultra-lightweight XTAR MC4S 4-slot smart charger with compact, long-lasting XTAR 16340 650mAh 3.7V protected lithium-ion rechargeable batteries. (Available in 1-Pack or 2-Pack options). The included 16340 battery delivers 650mAh true capacity with a 3.7V nominal voltage and a 0.95A maximum continuous discharge current. It features a built-in protection board and is engineered to maintain over 80% capacity after 300 recharge cycles, ensuring excellent long-term reliability. The XTAR MC4S charger features four independent charging circuits, a modern Type-C input, smart battery type recognition, and 0V activation. The charger itself weighs just 95g. This kit provides a highly portable, durable, and reliable power solution for your compact everyday electronics. (Note: MC4S perfectly accommodates standard 16340 protected batteries, but does NOT support protected 20700 and 21700 batteries).

Key Features

• Complete Compact Power Kit: Includes one XTAR MC4S 4-slot charger (with USB cable) and one or two XTAR 16340 650mAh 3.7V protected batteries based on your selection.

• Durable Battery Specifications: Features 650mAh true capacity, a 3.7V nominal voltage, and a 0.95A maximum continuous discharge current. The integrated protection board ensures safety against overcharge, over-discharge, and short circuits.

• Extended Cycle Life: Engineered to retain over 80% of its original capacity even after 300 recharge cycles, offering exceptional long-term value and reliable performance over time.

• 4 Fully Independent Charging Slots: Each slot features independent circuit control, allowing you to safely mix charge Li-ion and Ni-MH/Ni-CD batteries without interference. All four slots are perfectly sized for the compact 16340 battery.

• Smart Battery Identification & 0V Activation: Automatically recognizes battery types and applies optimal charging strategies (TC-CC-CV for Li-ion). Built-in 0V activation safely revives over-discharged batteries.

• Intuitive LED Indicator Lights: Red light indicates charging or activation; Green light means fully charged or empty slot; Flashing red/green indicates reversed polarity (please correct immediately).

• Type-C Input & Ultra-Portable Design: Modern Type-C port allows for easy power connection via wall adapters, laptops, or car chargers. The charger weighs just 95g and measures L100 x W97 x H26.5mm, making it perfect for travel and daily carry.

• Comprehensive Safety Protections: Built-in overcurrent, overcharge, overvoltage, and short-circuit protections. Automatically stops charging when the battery is full.

Product Parameters

Charger (XTAR MC4S):

• Model: XTAR MC4S

• Input Power: DC 5V 2.1A (Type-C)

• Constant Charging Current: 1A x 2 / 0.5A x 4

• Charging Cut-off Voltage: 4.20 ± 0.05V (Li-ion)

• Charging Cut-off Current: ≤70mA

• Operating Temperature: 0 - 40°C

• Dimensions: L100 x W97 x H26.5 mm

• Net Weight: 95g

• Supported Battery Types: 3.6V / 3.7V Li-ion (IMR/INR/ICR), 1.2V Ni-MH / Ni-CD

• Supported Sizes (CH1 & CH4): 10440, 14500, 14650, 16340, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650

• Supported Sizes (CH2 & CH3): 10440, 14500, 14650, 16340, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700

• Important Restrictions: This charger does NOT support protected 20700 and 21700 batteries.

Battery (XTAR 16340 650mAh):

• Brand: XTAR

• Model: 16340 Rechargeable Li-ion Battery

• Nominal Capacity: 650mAh

• Nominal Voltage: 3.7V

• Protection Board: Built-in (Protected)

• Max Continuous Discharge Current: 0.95A

• Weight: 17g

• Dimensions: φ16.4 ± 0.3mm (Diameter) x H34.3 ± 0.5mm (Height)

• Cycle Life Performance: Capacity loss less than 20% after 300 cycles.

Applications

• Efficient daily charging and power supply for compact EDC flashlights, pen lights, and small tactical lights.

• Reliable energy source and maintenance for laser pointers, remote controls, and small portable gadgets.

• Lightweight portable charging solution for outdoor survival gear, mini headlamps, and emergency kits.

• Convenient mixed charging station for both 3.7V Li-ion and 1.2V Ni-MH household batteries.

Frequently Asked Questions (FAQ)

Q1: What is included in this bundle?
A1: The bundle includes one XTAR MC4S 4-slot smart charger, one USB-A to USB-C charging cable, one user manual, and either 1 or 2 units of the XTAR 16340 650mAh 3.7V protected batteries based on your selected variant.

Q2: Can this charger accommodate the small 16340 battery size?
A2: Yes. The XTAR MC4S features four spring-loaded slots that perfectly fit the 16.4mm diameter and 34.3mm height of the 16340 battery. All four slots are compatible with this size.

Q3: Can the MC4S charge protected 20700 or 21700 batteries?
A3: No. The MC4S does NOT support protected 20700 and 21700 batteries. Please do not use those cells with this charger.

Q4: What does the flashing Red and Green LED lights mean?
A4: When the LED lights flash between red and green, it indicates the battery has been inserted with reversed polarity. Please immediately remove the battery and insert it in the correct orientation.

Q5: Can I charge a Li-ion and a Ni-MH battery at the same time?
A5: Yes. The MC4S features 4 completely independent charging circuits. You can safely charge a 3.7V Li-ion battery in one slot and a 1.2V Ni-MH battery in another slot simultaneously.