UltraCharge 10000mAh Portable Power Bank — 20W PD USB-C Fast Charger for iPhone & Samsung
\nTwo full charges for your iPhone, one for your Samsung, and enough left for earbuds — in a bank slim enough to forget is in your bag.
\n\n \nThe UltraCharge 10000mAh delivers 20W USB-C Power Delivery fast charging in a 15mm slim profile that fits in a jacket pocket without creating a noticeable bulge. At 185g it weighs less than an iPhone 16 Pro Max — which means you genuinely carry it, rather than leaving it at home because it's too heavy or bulky to bother with.
\nThe USB-C port fast-charges iPhone 15 and 16 from 0% to 50% in approximately 35 minutes — three times faster than the 5W brick Apple used to include. For Samsung Galaxy S24 and S23 users, the same USB-C port delivers 20W compatible with Samsung's Adaptive Fast Charging protocol. The USB-A port handles a second device simultaneously at 12W — a second phone, a pair of AirPods, or a portable speaker — without reducing the USB-C output speed. The LED digital display shows remaining charge as an exact percentage so there are no surprises mid-journey.
\nThe bank recharges via USB-C at 18W — from depleted to full in approximately 3 hours from a compatible wall adapter. At 37Wh it sits comfortably under the 100Wh airline carry-on threshold, flying in hand luggage on any commercial route without approval or declaration.
\nWhat sets it apart
\n20W USB-C PD Fast Charge
\niPhone 15/16 to 50% in ~35 min — compatible with Samsung Adaptive Fast Charge and USB-PD devices
\nLED Percentage Display
\nExact battery readout at a glance — never miscalculate how much charge you have before a long day
\nDual Simultaneous Output
\nUSB-C + USB-A active at the same time — charge two devices from one bank without splitting speed
\n15mm Slim Profile
\nThinner than most wallets — slips into a jacket pocket, back pocket, or small bag without adding bulk
\nAirline Carry-On Safe
\n37Wh — below the 100Wh limit for hand luggage on all commercial airlines, no approval needed
\nSmart Charging IC
\nAuto-identifies connected device and delivers the correct voltage and current — no overcharging risk
\nEstimated charges from full capacity
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Product specifications
\n20W PD — what makes fast charging work on iPhone and Samsung
\nUSB Power Delivery (PD) is a charging standard that allows the charger and device to negotiate the optimal voltage and current for the fastest safe charge rate. Without PD, USB chargers output a fixed 5V regardless of what the device needs — efficient for small devices but slow for phones with large batteries. With 20W PD, the UltraCharge negotiates with iPhone 15/16 to deliver 9V at up to 2.2A — reducing the 0–100% charge time from approximately 3 hours (5W) to under 2 hours. Samsung Galaxy S23 and S24 use a compatible fast charging protocol at similar voltages — the bank detects the connected device type and adjusts output automatically, with no manual configuration needed.
\n\nWhy 10,000mAh is the right capacity for most users
\nPower bank capacity options typically run from 5,000mAh to 20,000mAh or more. The tradeoffs are direct: more capacity means more weight and bulk, and more Wh which eventually crosses airline thresholds. A 5,000mAh bank provides roughly one full iPhone charge — useful as emergency backup but limiting for multi-day trips or heavy users. A 20,000mAh bank provides four or more iPhone charges but weighs 350–400g and may require declaration on some airlines. At 10,000mAh and 37Wh, the UltraCharge sits at the optimum point: enough for two full iPhone charges or 2+ Samsung charges, light enough to carry daily without noticing it, and under every airline's carry-on threshold without any negotiation at security.
\n\nSlim design — why 15mm matters
\nMost 10,000mAh power banks are 18–22mm thick — noticeably blocky in a pocket and often cited as the reason people leave the bank at home or in a bag rather than carrying it on their person. At 15mm, the UltraCharge is thinner than many smartphone cases and sits flat in a jeans back pocket or jacket breast pocket without creating an uncomfortable pressure point. The anodised aluminium body provides structural rigidity at this slim profile — the bank doesn't flex or creak under pocket pressure, and the surface stays cool even during high-wattage output.
\n\nUnderstanding simultaneous output power sharing
\nWhen both USB-C and USB-A ports are in use simultaneously, the bank's total output is shared across both connections up to a combined maximum of 22.5W. If USB-C is fast-charging an iPhone at 20W and USB-A is charging AirPods at 2.5W, the combined draw is 22.5W — the iPhone continues fast-charging at full speed. If USB-C is charging a USB-C Android phone at 20W and USB-A is charging a second Android at 12W, the bank's power management IC redistributes the load — typically maintaining faster charge on the higher-wattage port and reducing the second port slightly. Both devices continue charging; the speed reduction is minimal in most real-world combinations.
\n\nRecharging the UltraCharge — what you need
\nThe bank recharges via its USB-C port at up to 18W — using the same USB-C cable used for iPhone or Samsung. A wall adapter that supports 18W+ PD output charges the bank from empty to full in approximately 3 hours. A standard 5W adapter works but extends recharge time to 8–10 hours. The bank does not support pass-through charging (charging the bank and a device from the same input simultaneously) — plug in overnight from a standard adapter and it will be fully charged by morning without any timing or setup required.
\n\nFrequently asked questions
\nDoes this fast-charge iPhone 14 (Lightning)? iPhone 14 uses Lightning. The USB-C port on this bank requires a USB-C to Lightning cable (not included) to connect to an iPhone 14 or earlier. Charging speed via USB-C to Lightning is up to 20W on supported models — iPhone 14 Pro supports up to 27W fast charge, with this bank delivering 20W. iPhone 12 and 13 support up to 20W via Lightning PD, which this bank provides at full speed through a USB-C to Lightning cable.
\nCan I charge a MacBook with this? Yes — the 20W USB-C port provides meaningful top-up charging for MacBook Air and MacBook Pro. MacBooks require 30W–96W for full-speed charging; at 20W the bank will slow or prevent battery drain during light use rather than charging the MacBook at full rate. It works well for extending MacBook use time on the go rather than as a primary laptop charger.
\nDoes it charge Samsung at its fastest speed? Samsung Galaxy S24 and S23 support Samsung Adaptive Fast Charging (AFC) at 25W via USB-C. This bank outputs 20W PD — compatible with Samsung AFC and delivering close-to-maximum charge speed. At 20W vs. 25W, the difference in real-world charge time is approximately 10–12 minutes for a full charge cycle — negligible for most use cases.
\nIs there an indicator when the bank is fully charged? Yes. The LED display shows 100% when fully charged and the display blinks to indicate active input charging. The bank stops drawing current automatically when full — leaving it connected to the wall adapter after reaching 100% does not damage the battery.
\nHow many times can I charge an iPhone 16 Pro Max? iPhone 16 Pro Max has a 4,685mAh battery. Accounting for voltage conversion efficiency (~85%), the bank delivers approximately 8,500mAh of usable energy at 5V — enough for approximately 1.8 full charges from 0% to 100%, or just under two complete charge cycles.
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