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XTAR ST2 – Perfect battery charger for your 18650 vape mods.

Discussion in 'Xtar' started by XTAR-Justin, Jul 11, 2019.

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  1. XTAR-Justin

    XTAR-Justin Brand Manager

    Mar 9, 2012
    Nowadays, most vapers who use mods have an interest in finding the best 18650 battery charger. Some mods come with in-built batteries, but many require separately-purchased batteries an offer more flexibility and longevity as a result. But not all vape charger units are created equally. Not only can the prices vary, but the charging speed and the reliability of the chargers can also differ substantially.

    Finding the best vape battery charger for the mod means considering various factors including safety, accuracy and how many batteries it can support. Most chargers do the job well enough for most purposes. A high-performance charger can bring your vape experience upon a whole different lever. If you want the best charger for 18650 battery mods, here are our recommendation.

    July 4th, 2019. XTAR launched its brand-new ST2 fast charger, capable of charging via the Type-C cable on the go. As the latest 2-slot quick charger of fast charging series, ST2 provides a unique experience of charging 2 Li-ion batteries separately and performs a maximum output of 4,100mA in 2-slot. It only takes 30 minutes to fully charged of a 2000mAh battery.
    XTAR products and ST2 are sold at Amazon, eBay, Shopee & Aliexpress. To learn more about ST2, please click: ST2 or visit:
  2. XTAR-Justin

    XTAR-Justin Brand Manager

    Mar 9, 2012
    The Priority Choice Of 18650 or 20700 Battery Charger: XTAR ST2

    18650 or 20700 batteries are the type of lithium-ion battery that’s become quite popular in recent years. They are still used primarily for power vapers and flashlight users as far as mainstream usage goes, but the market for them is spreading and specialized devices that use them are becoming more and more common all the time.

    There are a few different factors that come into play when you’re looking into picking a charger out, and let’s take a look at XTAR ST2 battery charger and then we can discuss about what reasons e that make the ST2 charger is the right one for you.

    High-speed battery charging

    In addition, the 18650’s expandable nature of the charging will allow your charger to charge an array of different batteries as well, thus making it quite useful to have around the house.
    Base on that, XTAR ST2 support type C port, and the suitable slot for batteries, it can be adjustable if the batteries inserted comes with an over-charging protector.

    The ST2 charger hold two batteries and get them charged for you quickly via supports the max current at 4.1 A, which can ensure the short charging time and very fast charging battery speed.

    Battery security protection

    The users will also concern about battery safety. It’s common that when the lithium-ion battery charging, they will get over-heat or overcharging, which will cause damage to the battery life. To solve this problem, ST2 adopts built-in protection circuit can effectively prevent over-current, over-charge, over-voltage, short-circuit, making charging safer. And also it’s very friendly to the battery.

    Surprisingly, The ST2 charger is easy to use, with few buttons and features that are easy to understand. The XTAR ST2 also comes with LED indicator lights to let you know how far along things are.

    And the percentage of charge is displayed on the screen, which is very convenient.

    Buy XTAR ST2 charger at , it’s available now!
  3. XTAR-Justin

    XTAR-Justin Brand Manager

    Mar 9, 2012
    The Best Vape Charger for 18650/20700/21700 Batteries—XTAR ST2

    Beginners often use the USB port on their mods for charging their vape batteries. Although this is acceptable when you have no other option, consider getting a dedicated vape charger. Your batteries will charge faster, last longer and you will stay safer.

    Here is our recommendation of the most suitable vape charger that able to safely charge your 18650, 20700 and 21700 batteries.

    July 4th, 2019. XTAR launched its brand-new ST2 fast charger, capable of charging via the Type-C cable on the go. As the latest 2-slot quick charger of fast charging series, ST2 provides a unique experience of charging 2 Li-ion batteries separately and performs a maximum output of 4,100mA in 2-slot. It only takes 30 minutes to fully charged of a 2000mAh battery.

    XTAR ST2 battery charger can enable an automatic detection of battery internal resistance and automatic selection of the appropriate charging current for the battery when it is being insert into the slot. It compatible with 3.6V/3.7V Li-ion/IMR/INR/ICR 18650, 20700, 21700, 22650, 26650 batteries. The Built-in high-precision MCU ensure that the cut-off voltage is always within safe limits to extend the lifespan of the batteries, which is safe and worry-free.

    When buying other XTAR chargers, make sure you select the right plug type – UK or US – or you won’t be able to use them without an adapter.

    Your charger XTAR covered.

    XTAR products and ST2 are sold at Amazon, eBay, Shopee & Aliexpress. To learn more about ST2, please click: ST2 or visit:
  4. XTAR-Justin

    XTAR-Justin Brand Manager

    Mar 9, 2012
    NEW Arrival XTAR ST2 - 4.1 Fast Battery Charger

    Repost from our reviewer of Roberto Mazza
    The XTAR ST2 charger is from XTAR and new arrival product.
    For specifications on the manufacturer's page:

    XTAR ST2 Charger_ShenZhen XTAR Electronics Co., Ltd

    Here is a list of features:

    - Ultra-fast Charging for Two Slots
    - Max 2x4.1A, the fastest charger ever
    - Protection test of internal battery resistance
    - Battery temperature test with overheat protection
    - 1A / 2A / 4.1A optional current for each slot
    - OV activation restores the over-discharged batteries
    - Built with fireproof material to extend the life of the loader and ensure safety.
    - LCD information screen
    - Type C port, double rapid recharge protocol
    - Delicate design, excellent touch sensation
    - Manual and automatic, flexible control
    - Simple operation, clear display
    - Small and portable, stay in one hand
    - Input: PD2.0 (15V-3A), QC3.0 (5V-3A / 9V-2A)
    - Current: PD2.0: 4.2V-4Ax2 / 2Ax2 / 1Ax2 - QC3.0: 4.2V-4Ax1 / 2Ax2 / 1Ax2
    - Apply at 3.6 V / 3.7 V Li-ion / IMR / INR / ICR
    - Supported batteries: 18650/20700/21700/22650/26650.

    The ST2 charger comes with a USB Type -C power supply with
    two-pole connection, a 80 cm long Type-C to Type-C USB cable and a USB-A to Type-C cable of the same length compatible with the charging protocol quick QC3.0.
    The sales package will contain:
    - XTAR ST2 battery charger
    - USB-A to USB-C cable
    - USB-C to USB-C cable
    - Manual
    Let's see some images of the power supply by XTAR and the cables supplied with the XTAR ST2. Note, in particular, the USB
    Type-C output on the power supply:
    The XTAR ST2 charger is the latest product released by XTAR. The key features of the ST2 are fast charging up to 4.1A x2 and intelligent temperature control of the batteries being recharged. With the XTAR ST2 we can charge a 18650 2000 mAh battery in just 30 minutes.

    Battery temperature monitoring in real-time prevents overheating of the battery, safeguarding its duration and performance.
    The well-defined LCD display shows all the information on the battery charge status.
    Very nice the design of the XTAR ST2 in this version. A beautiful line where the blue stripes on the sides stand out and the feel is excellent.

    The XTAR ST2 is built in fireproof and resistant ABS + PC material.

    In the upper part, we find beyond the two recharging slots, equipped with a contact for reading the battery temperature, a very defined display with white writing on a blue background, the two status LEDs and two buttons (CH1 and CH2) that distinguish the two recharge slots available with the XTAR ST2.

    The XTAR ST2 charger is equipped with a USB Type-C input to connect our ST2 to a compatible power supply as well as a Power bank. The specially designed Type-C input is available to support the PD2.0 and QC 3.0 protocols, compatible with various adapters.
    There are also openings that help dispose of the heat produced during operation.

    In the lower part we find 5 soft rubber feet that raise the charger giving stability and allowing, through other slits, to dispose of part of the heat produced.
    The data of the charger and the serial number are then shown in white.

    With the XTAR ST2 charger we have the ability to charge 3.6V / 3.7V IMR / INR / ICR Li-ion batteries of the
    18650/20700/21700/22650/26650 format and up to 4.2V with 4A, 2A or 1A for slots.
    It is also possible to charge 21700 Li-ion batteries protected up to 76mm.

    - To activate the "Upload" function:
    Connect the device to the power supply and insert the batteries.

    Three-stage Charging Makes Batteries healthier
    Specially-designed TC-CC-CV charging method safely and efficiently charges your batteries.The charger uses trickle current (TC) to "awake"
    and protect batteries when the battery voltage is very low. After the voltage becomes normal, the charger starts constant current (CC) charging, and the charging speed is guaranteed with a larger current.When the battery is almost fully charged, the charger starts constant voltage (CV)
    charging, to make sure the battery is fully charged and less-damaged.

    Once powered, the XTAR ST2 checks the display (very clearly legible)..

    Charging will start automatically. Press the CH1 or CH2 button to adjust the charging current. The notification LED above the display
    changes from green to red to indicate the charge status. On the LCD display we can read the information regarding the voltage of the
    batteries, the percentage of charge, the charge current, the internal resistance and the temperature of the batteries.

    The XTAR ST2 battery charger intelligently selects the most suitable current by reading the internal battery resistance. It is however possible
    to change it and switch to the three currents (1A / 2A / 4.1A) according to different needs.
    The charging temperature is monitored through the built-in sensors throughout the recharging cycle. In my tests I never exceeded 50 ° C; in that case I loaded a Samsung 30Q with 4.1A until the complete recharge of 4.20V.
    The built-in high-precision MCU makes the cut-off voltage up to ± 0.05 V and the XTAR ST2 charger at the end of charging (at 4.20V), automatically interrupts it and the notification LED turns green.
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