Recently, XTAR released four classic upgrades. They are PB2C, MC4S, X2 extended version and X4 extended version. Someone may have some confusion about the upgrade of these products, so we'd like to make a product comparison to help you choose the most suitable one.

Here you can get three sets of product comparison:

• XTAR PB2C, PB2, PB2S
• XTAR MC4S, MC4
• XTAR New X2, X2, New X4, X4

Comparing PB2C, PB2 and PB2S

Model	XTAR PB2C	XTAR PB2	XTAR PB2S
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Color Options	Blue and Orange	Black, Red, Blue, Orange	Black, Red, Yellow, Blue
Size of Power Bank	L110mm x W51mm x H24.3mm	L110mm x W51mm x H24mm	L125mm x W58mm x H28mm
Cosmetic	Smooth	Matte	Matte
Battery Compatibility	Protected or Unprotected 18650 batteries	Unprotected 18650 batteries only	Unprotected 18650 18700 20700 21700 and Protected 18650 batteries
Charging Input Type	USB-C	Micro-USB	USB-C
Battery Indicator	4 Indicator LEDS	Battery Indicator displayed in Percentage (%)	Numerical display
Input	5V 2.1A	5V 2.1A	QC3.0 & PD3.0 (5V 2A / 9V 2A / 12V 1.5A)
Charging current	2AX1/ 1AX2	2AX1/ 1AX2	2Ax2 2Ax1 1Ax2
USB output	5V 2.1A	5V 2.1A	QC3.0 & PD3.0 (5V 2A / 9V 2A / 12V 1.5A)
End-of Charge Voltage	4.20 ± 0.05V	4.20 ± 0.05V	4.20 ± 0.05V
End-of Charge Current	≤180mA	≤150mA	≤120mA
Price	$11.99	$15.99 - $18.99	$23.99
Buy at Amazon	Coming Soon	Buy Now	Buy Now
Buy at AliExpress	Buy Now	Buy at AliExpress	Buy at AliExpress

PB2 is the first battery charger and power bank 2-in-1 product launched by XTAR. Its stylish appearance and high-quality performance have been loved by many users. With the emergence of more and more customized 18650 batteries, many fans hope that XTAR will enhance the compatibility of PB2.

So XTAR upgraded PB2 to a new PB2C. The PB2C can charge almost all the button top or protected 18650 batteries on the market. And it uses the popular USB-C input, whether you are outdoor travel, adventure, camping, or hiking, PB2C can become your best partner.

If you have lots of 21700 batteries, then PB2S is your consideration. It not only support more types of batteries but also show the charging current, voltage, internal resistance of the battery.

Comparing MC4S and MC4

Model	XTAR MC4S	XTAR MC4
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Battery Compatibility	3.6V/3.7V Li-ion/IMR/INR/ICR: 10440 - 26650 1.2V Ni-MH/Ni-CD: AAAA/AAA/AA/A/SC/C	3.6V/3.7V Li-ion/IMR/INR/ICR: 10440 - 26650
Charging Input Type	USB-C	Micro-USB
Battery Indicator	4 Indicator LEDS	4 Indicator LEDS
Input	5V 2.1A	5V 2.1A
Charging current	1Ax2 / 0.5Ax4	1Ax2 / 0.5Ax4
End-of Charge Voltage	4.20 ± 0.05V	4.20 ± 0.05V
End-of Charge Current	≤70mA	≤120mA
Size	L100mm x W97mm x H26.5mm	L100mm x W97mm x H26.5mm
Price	$12.99 - $14.99	$18.99
Buy at Amazon	Buy Now	Buy Now
Buy at AliExpress	Buy Now	/

Considering more and more customer needs, we upgraded MC4 to MC4S, and now it is compatible with Li-ion batteries and Ni-MH / Ni-CD batteries. And MC4S adds the popular Type-C input port, so that you are no longer limited by the charging cable, more convenient to use.

Comparing New X2, X2, New X4 and X4

Model	New X2	X2	New X4	X4
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Battery Compatibility	3.6V / 3.7V Li-ion 14500 - 26650, Including Protected 20700 and 21700 Batteries; 1.2V Ni-MH and Ni-CD Batteries	3.6V / 3.7V Li-ion 14500 - 26650; 1.2V Ni-MH and Ni-CD Batteries	3.6V / 3.7V Li-ion 14500 - 26650, Including Protected 20700 and 21700 Batteries; 1.2V Ni-MH and Ni-CD Batteries	3.6V / 3.7V Li-ion 14500 - 26650; 1.2V Ni-MH and Ni-CD Batteries
Charging Input Type	AC port + Micro USB port	AC port + Micro USB port	AC port + Micro USB port	AC port + Micro USB port
Battery Indicator	LCD Screen Display	LCD Screen Display	LCD Screen Display	LCD Screen Display
Input	100-240V~50/60Hz 0.4A 5V 2.1A	100-240V~50/60Hz 0.4A 5V 2.1A	100-240V~50/60Hz 0.8A 5V 2.1A	100-240V~50/60Hz 0.8A 5V 2.1A
Charging current	2Ax1 / 1Ax2 / 0.5Ax2	2Ax1 / 1Ax2 / 0.5Ax2	2Ax2 / 1Ax4 / 0.5Ax4	2Ax2 / 1Ax4 / 0.5Ax4
USB Output	/	/	5V 1A	5V 1A
End-of Charge Voltage	4.20V ± 0.05V 1.45V ± 0.1V	4.20V ± 0.05V 1.45V ± 0.1V	4.20V ± 0.05V 1.45V ± 0.1V	4.20V ± 0.05V 1.45V ± 0.1V
End-of Charge Current	0.5A: ≤70mA 1.0A/2.0A: ≤130mA	0.5A: ≤70mA 1.0A/2.0A: ≤130mA	0.5A: ≤70mA 1.0A/2.0A: ≤130mA	0.5A: ≤70mA 1.0A/2.0A: ≤130mA
Length of Body	139mm	135mm	143mm	140mm
Price	$25.99	$23.99	/	$32.99 - $39.99
Buy at Amazon	Coming Soon	Buy Now	Coming Soon	Buy Now
Buy at AliExpress	Buy Now	/	Coming Soon	Buy Now

The new X2 and X4 are compatible with the protected 21700 lithium battery while maintaining the original features. In recent years, more and more people bought 21700 flashlights. We believe that purchasing a charger that can charge protected 21700 batteries will give you greater applicability.