XTAR PB2SL V2 charger for 18650/21700 USB Li-ION batteries, 2 channels

A new version of the well-known XTAR PB2SL charger with Power Bank function!

*Faster charging
*More modern HD display for checking power, voltage and current
*Improved safety features
*Smoother operation

Two built-in ports (USB-A and USB-C), a digital HD display and QC3.0 + PD3.0 fast-charging functions ensure the device can be used as a charger or Power Bank.
The output power of up to 22.5 W allows external devices to be charged easily and quickly.
It supports multiple fast-charging protocols, including QC4+, PD3.0, PPS and AFC, ensuring efficient charging in the optimum time.
It can charge one or two Li-ION batteries 18650/ 18700/ 20700/ 21700 (protected and unprotected) simultaneously.
It features 0V technology for reactivating deeply discharged cells (during charging).
It supports high-capacity cells (6000 mAh) that provide more power.
It features a charging-function management system. Compatible with industrial cells (so-called flat-top cells).
The Power Bank function, with support for QC3.0 + PD3.0 (Power Delivery) technology and a maximum charging current of 2.0 A using high-performance Li-ION 21700 cells, makes it possible to fully charge an iPhone 15/16 in 1.5 hours.
The charger is safe thanks to protection against reverse polarity, short circuits and overheating.
The compact and lightweight construction is enclosed in a soft-touch housing (scratch-resistant material), while the battery compartment cover features retaining magnets that allow batteries to be replaced very quickly.
The charger has an HD display for checking power, voltage and current.

Used as a Power Bank:

*Wide compatibility with devices from brands such as Apple, Samsung, Huawei and Xiaomi
*USB-C output 4.5 A (SCP)
*Environmentally friendly thanks to support for rechargeable cells
*Controls cell charging and provides a Power Bank capacity of up to 7000 mAh
*The charge and discharge balancing technology makes the entire cell capacity available and additionally extends its service life
*Conversion efficiency of up to 92%
*Portable Power Bank with a magnetic housing closure, quickly charging all types of mobile phones and USB devices
*Its compact dimensions and charger functions make it a convenient device not only for travel. It features an easy-to-read LED display showing the charge level, charging voltage and charging current (when used as a charger), or the battery discharge level, voltage and current (when used as a Power Bank).

Used as a battery charger:

*Supported charging technology QC3.0 + PD3.0
*Maximum actual charging current of 2 A with one or two cells
*Ability to fully charge an iPhone 15/16 battery in 1.5 hours or 2 × 5000 mAh 21700 batteries in 3 hours
*Equipped with a 0V activation function that reactivates excessively discharged batteries
*Three-stage TC / CC / CV charging maximizes battery life
*Multiple safety features

USB output function:

*Supported charging technologies QC3.0, QC4+, PD3.0, PPS, AFC
*The USB output enables batteries and external devices to be charged simultaneously when the power supply is connected
*When the charger becomes a Power Bank, the display shows the percentage discharge level of the battery/batteries, as well as voltage and current
*The charger gives priority to charging devices connected to the USB output. Once USB charging is complete, it begins charging the cells inserted in the charger at full efficiency
*Charging through the USB port is routed directly from the connected power source to the charger, bypassing the use of the cells and thereby reducing their wear

Technology used:


*The selectable charging currents of 1.0 A and 2.0 A allow the charging speed to be controlled, thereby extending cell life
*Processor-controlled TC/CC/CV charging method for Li-ION cells
*Charging is cut off precisely at 4.2 V when the battery is fully charged
*Each channel is independent, so 1 or 2 Li-ION cells can be charged at the same time
*The buffer technology protects batteries during the charging process
*Thermal, short-circuit and reverse battery insertion protection
*0V reactivation of deeply discharged batteries
*Rubberized housing surface
*24-month warranty

The TC/CC/CV charging algorithm used in the charger is a charging process for Li-ION cells that ensures the cell remains in good condition. It involves charging with the appropriate current and ending the charging process at the right time. The TC/CC/CV charging stages can be divided into:

TC stage: the initial control and reactivation phase for a cell whose voltage has dropped below 2.9 V
CC stage: the cell is then charged with a constant current ranging from 50 mA to 500 mA (depending on the connected power source).
CV stage: the charger then switches to top-up charging with decreasing current until the cell reaches a voltage of 4.2 V. When the cell voltage reaches 4.2 V, charging is complete and the battery is fully charged.

Reactivation of discharged cells involves inserting the cell into the charger and checking its voltage. This function allows each cell of the appropriate size to be checked. Once a discharged cell is detected, the charger attempts to reactivate it. Please note that the voltage falling below the minimum cell voltage limits the possibility of reactivating and saving the battery. If the cell is left in the charger, it will undergo self-discharge. However, if the Li-ION battery voltage drops below 3.9 V, charging will start automatically.

An interesting and safe solution in the PB2SL V2 charger is the separately connected power supply. This prevents unnecessary heating of the cell being charged. The cell temperature may increase by no more than 15 °C. When the set is operating, the power supply itself heats up rather than the cell being charged. This directly affects battery life.

Technical data:

*Manufacturer: XTAR
*Charger model: PB2SL V2
*Supported battery types: 1–2 Li-ION batteries 3.6–3.7 V (65–78 mm long)
*Supported battery sizes: 18650/ 18700/ 20700/ 21700
*USB-C input parameters: QC3.0 + PD3.0 (5 V–3 A/ 9 V–2 A)
*Output parameters:
- USB-A: QC3.0 + PD3.0 (5 V–3 A/ 9 V–2 A/ 12 V–1.5 A)
- USB-C: PD3.0 & QC3.0 (5 V–3 A/9 V–2 A/ 12 V–1.5 A); SCP (5 V–4.5 A)
*Other supported protocols: PPS / PD2.0 / QC4+ / QC2.0 /AFC / FCP / PE2.0 / PE1.1 / SFCP
*Charging current: 2 A × 2/ 2 A × 1
*Power supply connector: USB-C
*Recommended power supply: 5 V 3 A (not included)
*Charging cut-off current: ?270 mA
*Charging method: processor-controlled TC/CC/CV
*Charging termination voltage: 4.2 V ±0.05 V
*Additional functions: reactivation of deeply discharged cells
*Protection: thermal, short-circuit and reverse battery insertion protection
*Operating temperature range: 0–40 °C
*Dimensions: 125 × 58 × 28 mm
*Gross weight: 162 g