★★★★★
Very happy with battery
tj3445—December 20, 2025
Will be keeping this in my car since cigarette lighter plug isn't working. It's performing well so far and has sufficient capacity for multiple charges. Read more
Portable Charger Power Bank 50000mAh USB-C PD 30W and QC 4 0 Fast Charging External Battery Pack with
$36.08
About this item
- Massive Capacity: The Seaistar portable charger features a high-density polymer battery, providing 11 charges for an iPhone 13 Pro and 8 charges for a Samsung Galaxy S22. Most smartphones can get over 9 full charges, making it ideal for camping, hiking, vacation, and travel.
- Multiple Outputs & Inputs: Equipped with 4 USB output ports, 1 USB-C port (supporting both input and output), and 1 Micro USB input port, this power bank can charge up to 4 devices simultaneously. It's compatible with iPhones, iPads, Android devices, laptops, and other USB-powered electronics.
- Fast Charging: The power bank supports PD 30W output and QC4.0 for quick charging, delivering 61% charge to your iPhone in just 30 minutes. It can be fully recharged in 8 hours with a 5V 3.0A charger (not included).
- Wide Compatibility: An LED display shows the remaining battery percentage, ensuring efficient power management. Compatible with a wide range of devices, including smartphones, tablets, laptops, and fitness trackers.
- Safety Features: Built with quality batteries and a comprehensive multi-protect safety system, it includes safeguards against overcharging, short circuits, overcurrent, overvoltage, and temperature control, ensuring the safety of your devices and the charger itself.
$36.08
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Delivery — 14 Apr – 20 Apr
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Product details
| Connector Type | Micro USB |
|---|---|
| Brand | seaistar |
| Battery Capacity | 50000 Milliamp Hours |
| Color | Black-a |
| Special Feature | Auto Shut-Off, Built In Cable, Digital Display, Fast Charging, Lightweight, Over Charging Protection,Short Circuit Protection, Scratch Resistant See more |
Technical specifications
| product_dimensions | 1 x 8 x 2 inches |
|---|---|
| item_weight | 1.4 pounds |
| item_model_number | P500 |
| batteries | 1 Lithium Polymer batteries required. (included) |
| best_sellers_rank | #7,538 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #353 in Cell Phone Portable Power Banks |
| special_features | Auto Shut-Off, Built In Cable, Digital Display, Fast Charging, Lightweight, Over Charging Protection,Short Circuit Protection, Scratch Resistant |
| other_display_features | Wireless |
| color | Black-a |
| manufacturer | ShenZhenShi ChenMei KeJi YouXian GongSi |
| date_first_available | January 27, 2024 |
From the brand
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Customer reviews
4.3225 ratings
Customers say
Customers praise the power bank's functionality and quality, with one noting it ensures all devices stay powered up.
★★★★★
Heavy
Melinda—December 14, 2025
Super fast last all day Portable but big do not get me wrong it is hefty but worth it. Read more
★★★★☆
Powerful but heavy
Jackie—December 7, 2025
This is a powerful battery, my only complaint is that it adds quite a bit of weight to my carry on. But I love that it can handle multiple charges for phones. I don't worry when we travel about where I can plug in. Read more
★★★★★
The strength and the ability to hold up.
Ida foltz—December 14, 2025
I find it's working good. My son reckamend it he happy with it and I'm sure I'll be too he knows what's good when it comes to buying electronic thanks for asking. Read more
★★★★★
!!WARNING!! This Charger IS THE BEST!!
Michael—December 1, 2025
The media could not be loaded. I've had this battery bank for quite some time now. I use it to charge phones and power LED lights on my camper and it works perfect. I can have this at 100% and buy the end of a two-day camping trip I plug it in my truck on my way home and it's charged by the time I get there. This is stood the test of time with me and dropping it and banging it on stuff hasn't affected at one bit. Read more
★☆☆☆☆
bad
frank—December 6, 2024
Last night, just before going to bed, I used it for the first time. The battery was at 74%, so I plugged it in with a USB-C charger. After taking a shower, the battery had increased to 75%, which made me feel a bit more reassured, and everything seemed to be working fine. I left it there to charge overnight and didn't touch it. When I woke up in the morning, I checked and saw that the charge was only at 79% and had stopped increasing. Additionally, the 50,000mAh capacity? I suspect it might be overstated. Although I haven't measured it myself, I strongly doubt it actually reaches that capacity. Now, I'm considering whether to return it or request a refund and find a better-quality power bank on Amazon. Requesting a refund is very difficult; I would have to return it to a place that's dozens of miles away. Since I don’t want to go through that hassle, I’ve decided not to return it. I can only leave a one-star review. Sigh. Read more
★★★★★
Great device
E. Bjornen—May 8, 2024
I like this power bank. I bought it for a specific purpose to power my red light/infrared pad and it works very well. It’s too heavy to carry around in my purse and was a long time charging. One it was charged, it holds a charge for a long time. When I bought it I didn’t intend to carry it around, I planned to use it in the home so the weight doesn’t bother me. Very pleased. Read more
★★★★★
This holds a nice charge I love this
alan—June 6, 2025
I’m able to charge my big phone many times before this dies, last a long time too… I love this for emergencies if my power goes out I can charge any battery that uses usb Read more
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