Description
Shipping and Returns
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

Free Shipping on Orders Over $65
This bundle combines the feature-rich XTAR X2 2-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 long-term reliability. The XTAR X2 charger offers an intelligent LCD display, supports 2A fast charging, and provides flexible AC/DC dual power inputs for versatile indoor and outdoor use. With comprehensive safety mechanisms, this kit provides a complete, durable, and reliable power solution for your compact electronics.
Complete Compact Power Kit: Includes one XTAR X2 2-slot smart charger (with AC adapter) 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.
Intelligent LCD Display: The high-contrast screen of the X2 charger accurately displays real-time battery voltage, charged capacity (mAh), charge percentage, and battery type, giving you full visibility into the charging process.
2A Fast Charging: Supports a maximum 2A charging current when charging a single battery, significantly reducing charging time compared to standard 1A chargers.
Flexible Dual Power Inputs: Features a unique dual-input design. Use the included AC power adapter (100-240V) for indoor wall charging, or connect to a standard USB 5V 2.1A port via a laptop or power bank for outdoor charging.
Humanized Status Prompts & Safety: The screen clearly displays "Full" when fully charged and "Err" if inserted with reversed polarity, triggering an auto-stop. Built-in protections include short-circuit, over-charge, over-temperature, and reverse polarity mechanisms.
Charger (XTAR X2):
Model: XTAR X2
Input Power: AC 100-240V ~ 50/60Hz 0.4A (AC Adapter) / DC 5V 2.1A (USB)
Constant Charging Current: 2A x 1 / 1A x 2 / 0.5A x 2
Charging Cut-off Voltage: 4.20 ± 0.05V (Li-ion) / 1.45 ± 0.1V (Ni-MH)
Operating Temperature: 0 - 40°C
Product Dimensions: L135 x W75 x H38 mm
Net Weight: 125g
Supported Battery Types: 3.6V / 3.7V Li-ion (IMR/INR/ICR), 1.2V Ni-MH / Ni-CD
Supported Li-ion Sizes: 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650
Supported Ni-MH/Ni-CD Sizes: AAAA, AAA, AA, A, SC, C
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.
Fast and reliable power replenishment for compact EDC flashlights and pen lights.
Efficient power source for laser pointers, small remote-control toys, and portable gadgets.
Professional charging and maintenance for 16340 batteries used in specialized compact electronic devices.
Versatile mixed charging for both 3.7V Li-ion and 1.2V Ni-MH household batteries.
An all-in-one, durable charging station for everyday small electronics and emergency gear.
Q1: What is included in this bundle?
A1: The bundle includes one XTAR X2 smart charger, one original AC power adapter, one user manual, and either 1 or 2 units of the XTAR 16340 650mAh 3.7V protected batteries based on your selected variant.
Q2: What is the maximum charging speed of the XTAR X2 charger?
A2: The XTAR X2 supports up to a 2A charging current when charging a single battery. When charging two batteries simultaneously, it supports up to 1A per slot.
Q3: How do I use the dual power input feature with this charger?
A3: Indoors, simply plug the included AC adapter into a wall outlet. Outdoors, connect it to a standard USB 5V/2.1A port, such as on a laptop or power bank. The charger will automatically adapt to the power source.
Q4: What do the "Full" and "Err" messages on the screen mean?
A4: "Full" indicates the battery has reached its full capacity (4.20V) and the charger has automatically stopped. "Err" indicates reversed polarity—remove the battery and insert it in the correct direction to resume charging.
Q5: Can this charger accommodate the compact 16340 battery size?
A5: Yes. The XTAR X2 features flexible spring-loaded slots designed to fit various sizes. It accommodates the 16340 battery (16.4mm diameter) perfectly and securely.
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 methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Security

The 650mAh is enough for my needs. The XTAR charger is trusty. The button top gives good contact in my light.
I keep this kit in my car for my mini flashlight. The battery doesn't self-discharge. The charger can run off USB.
The button top is well made. The charger's 2A speed is nice for such a small cell. I use it in a headlamp for running.
I replaced AAA batteries in my kid's toy with this. The 3.7V makes it faster. The charger is safe to use around the house.
My pocket flashlight has a new lease on life. The 16340 battery is a perfect fit. The XTAR charger is reliable.
Top Brands
Samsung LG Panasonic Molicel EVE
Full Size Range
From 10440 to 4680
B2B Experts
Bulk Discounts Global Logistics
Genuine & Safe
A‑grade cells & Certified
