Product Description
This bundle pairs the premium XTAR VC4 Plus 4-slot smart charger with high-capacity XTAR 21700 4900mAh rechargeable lithium-ion batteries. (Available in 1-Pack or 2-Pack options). The included 21700 battery delivers a massive 4900mAh capacity with a 3.6V nominal voltage and supports a robust 10A maximum continuous discharge current. The VC4 Plus charger is universally compatible with a vast array of cylindrical batteries (from 10440 up to 32650) and offers an intuitive LCD display, QC3.0 3A fast charging, 0V battery activation, and a precise 4.20V ± 0.05V charging cutoff. This versatile kit serves as a reliable power solution for a wide range of devices.
Key Features
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Massive Battery Capacity: The XTAR 21700 battery features an impressive 4900mAh capacity with a 3.6V rated voltage, providing exceptional runtime for high-drain applications.
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Robust Power Output: Supports a maximum continuous discharge current of 10A, delivering consistent and stable power for heavy-duty electronics.
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Extensive Charging Compatibility: The VC4 Plus charger supports 3.6V/3.7V Li-ion batteries (10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650, 32650) and 1.2V Ni-MH/Ni-CD batteries (AAA, AA, A, SC, C).
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Precision Charger Performance: Offers up to 3A single-slot fast charging (requires QC3.0 adapter), an LCD screen for real-time capacity, current, and voltage monitoring, and an ultra-precise 4.20V ± 0.05V charging cut-off voltage for Li-ion.
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Professional Battery Care Functions: Features 0V activation to recover over-discharged batteries, a Capacity Test mode, and a Storage mode to automatically maintain the battery at its optimal 3.7V long-term storage voltage.
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Wide Application Compatibility: Ideal for intercoms, high-lumen flashlights, portable speakers, radios, RC aircraft, camcorders, microphones, power banks, and custom battery packs.
Product Parameters
Charger (XTAR VC4 Plus):
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Input: QC3.0 USB Type-C (9V⎓2A, 18W Max)
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Charging Current: Single slot 3A Max / Dual slot 2A Max / Four slot 1A or 0.5A Max (per slot)
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Charging Cut-off Voltage: 4.20V ± 0.05V (Li-ion)
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Charging Cut-off Current: ≤120mA
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Operating Temperature: 0 - 40°C
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Dimensions: L156 x W115.5 x H35 mm
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Compatible Battery Types: 3.6V / 3.7V Li-ion (IMR/INR/ICR), 1.2V Ni-MH / Ni-CD
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Compatible Battery Sizes (Li-ion): 10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650, 32650 (Flat Top)
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Compatible Battery Sizes (Ni-MH): AAA, AA, A, SC, C
Battery (XTAR 21700 4900mAh):
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Brand: XTAR
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Model: 21700 Rechargeable Li-ion Battery
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Nominal Capacity: 4900mAh
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Nominal Voltage: 3.6V
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Charging Cut-off Voltage: 4.2V
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Max Continuous Discharge Current: 10A
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Weight: 71g
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Dimensions: 21.4 ± 0.3mm (Diameter) x 74.8 ± 0.5mm (Height)
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Note: Manual measurement may have an error margin of 0.5mm.
Applications
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Intercoms, two-way radios, portable speakers, and radios.
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High-lumen tactical flashlights and EDC lighting equipment.
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Remote-controlled aircraft (RC drones and model airplanes).
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Digital camcorders, professional video cameras, and wireless microphones.
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Mobile power banks and custom battery pack assemblies.
Frequently Asked Questions (FAQ)
Q1: What is included in this bundle?
A1: The bundle includes one XTAR VC4 Plus 4-slot smart charger, one USB Type-C cable, and either 1 or 2 units of the XTAR 21700 4900mAh 10A batteries.
Q2: Is this 21700 battery compatible with the VC4 Plus charger?
A2: Yes, the VC4 Plus features extra-wide slots designed specifically to accommodate larger batteries like 21700 (21.4mm x 74.8mm) safely.
Q3: What does the 10A discharge current mean for my applications?
A3: A 10A max discharge current means this battery can safely power devices that require high and sustained current, such as high-lumen flashlights and powerful RC motors.
Q4: What is the purpose of the charger's "Storage Mode"?
A4: The Storage Mode will automatically charge or discharge the battery to its optimal long-term storage voltage of 3.7V, significantly slowing down capacity degradation over time.
Q5: How does the charger prevent overcharging?
A5: The XTAR VC4 Plus has an ultra-precise charging cutoff voltage of 4.20V ± 0.05V. Once the battery reaches this level, the charger automatically stops supplying power.
