Xtar PB2S Portable Power Bank Li-ion Charger USB C

Pro Tip: Pair the XTAR PB2S with high-capacity unprotected 21700 batteries for maximum power output. For extended trips, carry spare batteries to swap instead of waiting for a recharge!

Unlike traditional power banks with fixed internal batteries, the XTAR PB2S lets you use your own rechargeable batteries, allowing for virtually unlimited power on the go. When one set drains, simply swap in fresh batteries and continue charging your devices without waiting.

Power Bank Benefits

• True power bank ergonomics with smooth, closed design when lid is attached
• Can charge phones, tablets, headphones, cameras, and other USB devices
• QC3.0 & PD3.0 fast charging for compatible devices
• Low-current device mode for charging small accessories like Bluetooth headphones
• Use USB-A and USB-C outputs simultaneously (limited to 5V when both in use)

Power Bank User Tips

• For maximum capacity, use high-quality unprotected 21700 batteries (up to 10,000+ mAh with two batteries)
• For extended trips, carry multiple sets of batteries rather than waiting for recharges
• Use the side button to check battery percentage while charging devices
• Long-press the button when off to activate low-current mode for small accessories
• Closed magnetic lid design prevents dust and debris while keeping batteries secure

Versatile Charging Performance

• With QC/PD input (9V/2A or 12V/1.5A): Charges two batteries at up to 2A each
• With 5V/2A input: Charges one battery at 2A or two batteries at 1A each
• Supports different batteries with varying capacities or charge levels
• Auto-detection of battery insertion with immediate charging

Enhanced Battery Accommodation

• Compatible with batteries from 63mm to 78mm length (except protected 21700)
• Includes removable spacer for tighter fit with shorter batteries
• Supports button top and flat top batteries
• Built-in ribbon for easy battery removal
• Magnetic lid with rotatable plastic piece to prevent 18650 batteries from rattling

Smart Power Management

• Auto-on when device is plugged in for charging
• Auto-off when output current drops below threshold
• Manual on/off control with side button
• Low-power device mode for charging smaller devices

Technical Specifications

What battery types can the PB2S accommodate?

The PB2S is compatible with 18650 (both protected and unprotected), 20700 (unprotected), and 21700 (unprotected only) batteries. It cannot fit protected 21700 batteries as they are too long for the battery compartment. The supported battery length range is 63-78mm.

Can I use both USB ports simultaneously?

Yes, both USB ports can be used simultaneously, but this limits output to standard 5V/2A. Using QC/PD (9V or 12V) on one port will disable the other port or reduce its voltage significantly.

Which batteries are recommended for maximum power capacity?

For maximum power capacity, we recommend using high-quality unprotected 21700 lithium-ion batteries, which can provide up to 5000mAh per battery (10,000+ mAh total with two batteries).

Is there a way to reduce the charging current?

No, the XTAR PB2S does not have a manual function to reduce the charging current. It automatically selects the optimal charging rate based on the input power source and number of batteries installed.

Can I charge small devices like Bluetooth headphones?

Yes, the PB2S has a special low-current device mode for charging small accessories like Bluetooth headphones and USB lights. Activate it by turning the unit off, then long-pressing the side button.