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Two cylindrical power banks, one black and one white, each 4.2 inches long with a 1.0 inch diameter

SIXTHGU S2103 5000mAh power bank 2-pack

SKU CH-SZDK-KAW3Y MPN S2103

A two-pack of 5000mAh USB-C power banks with 15W fast charging, built-in flashlights and four LED indicators

  • Total capacity5,000 mAh
  • Battery chemistryLithium ion
  • Voltage5 V
  • Amperage3 A
  • Measurements4.2 in × 1.0 in × 1.0 in
  • Product type5,000 mAh
  • Ultra-compact 4.2" x 1.0" cylinder slips into any pocket
  • 15W USB-C fast charge delivers about one full iPhone charge per bank
  • Built-in LED flashlight adds emergency light for dark walkways
  • FCC, CE and RoHS certified with overcharge and overheat protection
  • Two-pack gives 5000mAh each for phones, controllers, VR and more

Pocket power for daily carry

This two-pack of SIXTHGU S2103 power banks gives you 5000mAh each in a 4.2 by 1.0 inch cylinder that weighs 4.3 ounces. The black and white units slip into a pocket or coin purse for commuters, travellers and anyone who wants a spare charge without bulk. Each cell uses lithium-ion chemistry at 5 volts and delivers up to 3 amps through a reinforced USB-C port. They are certified for FCC, CE and RoHS compliance.

Thermals noise and power draw

The 15W maximum output means the banks stay cool during normal phone charging and the plastic shell remains comfortable to hold. No fan is present so operation is silent. Recharging a bank takes about three hours with a 5V 3A adapter and the 80% conversion efficiency yields roughly one full phone charge per unit. The four-LED indicator shows remaining capacity at a glance.

Accessories and software impact

The package includes two power banks and no extra cables or software. The built-in LED flashlight adds a backup light for dark walkways or keyholes. Compatibility spans iPhone, Android, Meta VR headsets, PS5 controllers, Nintendo Switch in handheld mode, Raspberry Pi and Arduino projects. Output is limited to 15W so 27W-plus fast-charging protocols are not supported.

How it compares

Measured against everything we stock in Portable Chargers & Battery Packs, at today’s prices. Recalculated every night.

Price $45.99
Pricier than about 70% of the 1,307 comparable items (median $36.99).

Specifications

Product
Brand nameSIXTHGU
Model nameS2103
Part numberS2103
Total capacity5,000 mAh
Product type5,000 mAh
Product colorBlack and White
Power
Battery chemistryLithium ion
Voltage5 V
Amperage3 A
Size & build
Measurements4.2 in × 1.0 in × 1.0 in
Product weight4.3 oz

Questions about this item

How do I install the S2103 power bank and what step do people often miss?

Connect your device to the USB-C port using a compatible cable; the step people miss is pressing the power button to start charging, as the bank does not auto-detect every device.

What maintenance or replacement will the S2103 need later?

The lithium-ion cells gradually lose capacity after several hundred cycles; plan to replace the unit when it no longer delivers a full phone charge.

What limit appears first during sustained use of the S2103?

The 15 W output ceiling is reached before the 5000 mAh capacity is exhausted, so high-draw devices charge slower than their maximum rate.

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