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 listing offers authentic XTAR 16340 650mAh 3.7V protected lithium-ion rechargeable batteries (available in flexible pack sizes of 1, 2, 3, 4, 5, or 10 batteries). Designed for compact portable devices, this tiny powerhouse delivers a true 650mAh capacity with a 3.7V nominal voltage. It features a built-in intelligent protection chip and a high-strength positive/negative protection board to prevent overcharging, over-discharging, and overcurrent. With a stable 0.95A continuous discharge current, it is the ideal power solution for mini flashlights, laser pointers, and other small electronic gadgets. Committed to eco-friendly manufacturing, it contains no lead, mercury, or cadmium, and maintains a capacity loss of less than 20% even after 300 charge cycles. The button-top design ensures a secure connection. Whether you need a single spare or a bulk supply, choose the pack size that fits your needs.
True Capacity, Energy Packed in a Tiny Body: Delivers a genuine 650mAh real capacity, providing sufficient energy for small devices in an ultra-compact form.
Built-in Intelligent Protection Chip: Integrated PCB protection board on both positive and negative poles prevents damage from overcharging, over-discharging, and overcurrent, ensuring safe and durable performance.
Reliable 0.95A Continuous Discharge: Offers a stable 0.95A continuous discharge current with steady voltage output, perfectly suited for compact flashlights and laser aiming devices.
300 Cycle Low-Loss Lifespan: Engineered to retain over 80% of its original 650mAh capacity even after 300 recharge cycles, outperforming standard batteries that degrade by 40%.
Environmentally Friendly: Manufactured with eco-conscious materials, completely free of environmental pollutants such as lead, mercury, and cadmium, and is fully recyclable.
Ultra-Lightweight & Button Top Design: Weighs only 17g and measures just 16.4mm in diameter and 34.3mm in height. The button-top positive terminal ensures reliable contact with compact EDC flashlights and laser gear.
Flexible Quantity Options: Available in 1, 2, 3, 4, 5, or 10-piece packs, allowing you to perfectly match your daily usage or batch maintenance needs.
Brand: XTAR
Model: 16340 Rechargeable Li-ion Battery
Nominal Capacity: 650mAh
Nominal Voltage: 3.7V
Protection Board: Built-in Dual Stainless Steel PCB with Protection Chip (Overcharge, Over-discharge, Overcurrent Protection)
Max Continuous Discharge Current: 0.95A
Positive Terminal: Button Top
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.
Eco-friendly Standard: Free of Lead, Mercury, and Cadmium.
Compact EDC flashlights, pen lights, and mini tactical lights (as shown in official application images).
Laser pointers, laser aiming devices, and laser sights.
Small portable electronic toys and DIY hobby projects.
Compact remote controls and wireless gadgets.
(Note: Due to its compact 16.4mm diameter size, this battery is strictly for devices designed for 16340 batteries. It will NOT fit into standard 18650 battery compartments.)
Q1: What are the available pack options for this battery?
A1: You can purchase this battery in 1, 2, 3, 4, 5, or 10-piece packs. Please select the desired quantity from the variant options before checkout.
Q2: Can I use this battery to replace an 18650 battery in my flashlight?
A2: No, definitely not. The 16340 battery is physically much smaller than an 18650 (16.4mm vs 18.8mm diameter, and much shorter). It will not make contact in a standard 18650 battery compartment.
Q3: Does this battery have a built-in protection board?
A3: Yes. It features an intelligent chip protection board integrated at the positive and negative poles to effectively prevent overcharging, over-discharging, and overcurrent, ensuring the safety of both the battery and your device.
Q4: What does the 0.95A discharge current mean for my devices?
A4: 0.95A discharge means this battery is designed for low-to-medium power devices, such as mini flashlights, laser pointers, and remote controllers. It is not suitable for high-wattage electronic cigarette mods or high-powered motors.
Q5: How should I charge this protected battery?
A5: It is highly recommended to use a professional smart charger (such as XTAR chargers compatible with 16340 size) with full safety protections to charge this 3.7V battery safely to its 4.2V cut-off voltage.
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 same quality I expect from XTAR 18650s in a tiny 16340. Protected, consistent, and reliable. I now own 14 of these.
After trying multiple brands, XTAR's protected 16340 is the most consistent. Fits all my lights and the button top is solid.
I replaced disposable CR123A batteries with these rechargeable 16340s. The savings paid for the 10-pack in three months.
My mini fan and pocket light both use 16340s. The XTAR 650mAh lasts long enough and charges quickly.
I've accidentally shorted one (user error, pocket with keys). The protected circuit kicked in and saved the cell. Still works perfectly.
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
