PISEN 20000mAh Power Bank, Dual-USB Output Portable Battery Charger Power Station, High Capacity External Battery Pack LCD Display, Universal Travel Charger for iPhone 8, Samsung and More
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- ULTRA HIGH CAPACITY: 20000mAh backup charging power charges your iPhone 7 about 6.7 times, Samsung S8 4.5 times, iPad Air 2 about 1.8 times
- DUAL USB OUTPUT: High capacity with 2 outputs easily power two devices at the same time; Smart Output port auto adjust current according to devices connected, which is much safer
- LCD DIGITAL DISPLAY: It has high-precision LCD display to show remaining power IN REAL TIME, you will know when to recharge it exactly
- MULTIPLE PROTECTIONS: This 20000mAh LCD Power Bank is equipped with MULTI-PROTECTION SYSTEM which helps to prevent potential damages from over-current, over-power, over-charge, short-circuit, voltage-shortage and more; gives your device a safer charge
- QUALITY GUARANTEE: Pisen provides 18-Month Quality Guarantee for all Pisen products, please feel free to use; What you get: 1 x Pisen 20000mAh LCD Power Bank, 1 x Micro USB Charging Cable, 1 x User Manual
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PISEN, inventor of power bank in 2004, is a smart technology provider with leading global sales to over 200 milion customers. For more than ten years, PISEN have been known for its outstanding performance and user-friendly designs.
Pisen utilizes market-leading battery cells to ensure that you receive the highest possible capacity, efficiency, reliability and safety.
Simultaneously Charge 2 Device
Two smart port can charges two devices simultaneously without buying another power bank
Leather Cloak Design
The shell frame was adopted leather clock design, feeling good in hand and increased its portability.
If you're after a charger with a high capacity but don't want to pay for all the extra features of something, PISEN offers a good alternative.
The 20,000mAh capacity is enough to charge a smartphone many times over. It weighs 473g with 8*18650 battery. Keep your vital tech alive with a reliable, reviving power back.
LCD screen shows you the remaining power in percentages accuratly instead of a 4-bar indicator. Also the backlight goes out in 15 Seconds for extra energy saving.
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What you get in the box is the battery pack, a user guide, and a micro USB cable to charge the pack, a a wall plug to charge the battery. When the battery pack came it was charged to 77%. I tested this pack as well with my multimeter and it showed 20,000 mAh cells in this battery pack.
One thing you will notice immediately is this is not a lightweight battery pack, nor is it particularly slim. Most 20,000 mAh battery packs are also pretty heavy and thick, so that's to be expected with such a large capacity. This isn't something you can toss in a small purse, but would be good for extended trips. On the top you have two charging ports and one micro USB port for charging the battery pack. On the side of the battery pack is the power button, which turns the LCD screen on and also must be done when you want to start charging your device.
During operation and when the pack is charging it does not get overly hot. It has no problem charging my tablet and phone. Time will tell how reliable it is, but so far there haven't been any issues. It's nice to have the LCD screen so you don't have to guess how much charge is left, although with OCD people like me that might not be the best. In the past the standard multi-light battery indicator has let me down in terms of accurately judging how much juice is left in the pack so the actual number can be helpful.
It's hard to find another pack at this capacity with better quality. The added wall socket is a nice addition as well.
Anyway, from a full charge, I did a 2A discharge test using a logging electronic load tester (results attached). The power bank is rated for 74Wh and was able to output 66.37Wh at 2A. This is 89.7% of its rating which means only about 10% of the capacity was lost due to dc-dc conversion which is actually pretty good and means that this is a pretty efficient power bank as well. A full re-charge then took on about 19264mAh which is 96.3% of the rated 20000mAh, which again is quite good.
Even though this is rated for up to 2A input I was only able to get about 1.3A of charge current. This is a bit lower than expected and rated. Also, why does this only come with a 1A USB charger? With such a high capacity, the higher current charger is really useful to speed up the already very long charge time.
It has 2 USB port one at 1A and another at 2A so one is faster charging then the other.
This Powebank is on the heavy end which is expected because of its capacity. I like the LCD screen to give you percentage how much juice it has. Unlike my other ones just give you number of bars.
All and all I do recommend it but the long charging period 10-20 hours depending you using a 1A or 2A charging plug is slightly annoying. So do need to charge overnight and longer to get that 100% full charge.