Before we dive into the features, it's helpful to know exactly what you get. Your Aukey PB-Y37 is a high-capacity 20,000mAh lithium-polymer power bank that’s designed to keep you powered up for days. Here’s what you should find inside the box:

| Parameter | Value | |-----------|-------| | Model | PB-Y37 | | Cell type | Lithium-polymer (Li-Po) | | Input (USB-C) | 5V/3A, 9V/2A | | Input (Micro-USB) | 5V/2A, 9V/2A | | Output (USB-C) | 5V/3A, 9V/2A | | Output (USB-A) | 5V/3A, 9V/2A, 12V/1.5A | | Total output (both ports) | 5V/3A max | | Dimensions | 155 x 75 x 16 mm | | Weight | ~360 g (12.7 oz) |

The PBY37 is unique because it has two ways to get power in. Your physical manual likely shows a diagram of this.

Yes. The PBY37 supports dual charging. The total output is 5V/3.4A (17W). This is roughly 10W per phone. It will charge both slower than individually, but it works fine for overnight charging or topping up.

: If storing the power bank for an extended period, maintain a charge between 50% and 70% and recharge it once every 3 months to preserve battery health. Troubleshooting Power bank will not charge Verify that the wall outlet is functioning normally.

She began to use the manual like a map and the PBY37 like a compass. Sometimes she seeded it in places she loved: an old grocery store that smelled of coriander, a stairwell that had once held a secret handshake. Sometimes she returned the device to spots that had hurt—an alley where she’d been robbed of more than a coat—and listened to the city rearrange those pains into narrations she could sit beside without flinching.

Do not leave the device in environments exceeding 45°C (113°F), such as inside a hot car. Do not charge the power bank in temperatures below 0°C (32°F).

The has a specific fix for this:

The Aukey PBY37 earbuds offer an impressive battery life, with up to 5 hours of playback on a single charge. The charging case provides an additional 20 hours of battery life, making it easy to keep your earbuds charged on the go.

Here are the detailed specifications:

Provides approximately 4-5 charges for modern smartphones. Dual Port Output: Charge two devices simultaneously.

A: Generally,, it is recommended to not use pass-through charging for long periods to preserve battery life, although it may function for low-power devices. If you'd like, I can: Provide a link to the official Aukey PBY37 user manual PDF . Help you find compatible fast-charging cables . Compare this model with other Aukey power banks . Let me know how I can further assist you with your Aukey PBY37 Go to product viewer dialog for this item.

: Press and hold the power button for 2 seconds again. The indicator will return to white.

Connect a USB-C cable to the input port. Using a 45W PD charger can fully recharge the unit in approximately 2 hours .

| Display Shows | Meaning | |---------------|---------| | | Normal remaining capacity | | 4 – 1 | Critical low power; will only charge small devices | | 0 | Battery depleted; recharge immediately | | Blinking number | Device is charging the power bank (input mode) | | Solid number | Device is being charged by the power bank (output mode) | | "---" or no display | Battery protection mode triggered (see troubleshooting) |

Do not plug a USB-C to USB-C cable into the PBY37’s input port if the other end is connected to a laptop. The PBY37’s USB-C port is input only . It will not charge a laptop or act as a USB-C output.