Well-priced slim power bank but way too many quality complaints.
What We Like
- Priced really well
- Slim and pocketable power bank
- 2 ports with a fast charging port
- Robust construction
What We Don’t Like
- Too many quality complaints…good warranty and returns are no substitute for reliable quality!
- No QuickCharge capability
- All metal construction looks cool and offers durability but can cause scratches if kept in the same pocket as the phone.
- Misleading name hints at higher capacity!
The Polanfo 20000 slim powerbank is a rare find among power banks as it combines an excellent 8,000 mAH capacity (2 to 3 charges for most smartphones ) in a very slim and pocketable package (less than half inch thick) at an unbeatable price. The power bank’s slim and compact design goes well with modern slim phones. The slim design allows you to easily keep it in your pockets – something only very pricey powerbanks can offer.
Polanfo 20000 slim powerbank will give about three complete charges for iPhone 6s and two complete charges for Samsung Galaxy S6.
Know Before Buying
Many vendors on online marketplaces are marketing this 8000 mAH battery bank with claims of a 20000 mAH capacity. Partly, this is because the 20000m name gives a wrong idea about the battery capacity and makes you think it is a 20,000 mah powerbank!
Slim and Light power bank
Polanfo 20000 slim powerbank is easily one of the most compact and lightest power banks in the 10,000 mah category.
It has a weight of just 7.2 ounces (200 grams) and size of 5.6 inches by 2.9 inches with .4 inch thickness. The weight is about that of a lighter, making it smaller in dimensions than a typical big screen smart phone and less than half the thickness of typical .9 inch thick powerbanks..
Price-wise, weight-wise and capacity-wise, Anker PowerCore 10000 mAH powerbank is a better choice as it offers higher 10000 mAH capacity at an even lower weight of 6.6 oz (187 grams)!!! The latest version Anker PowerCore 10000 with QC 3.0 output even offers QuickCharge 3.0 output for charging your smartphones to almost 80% capacity in 30 mins, though at a bit higher price.
However, the Polanfo 20000 powerbank beats Anker 10000 powerbanks in pocketability and has a thickness of just .44 inches compared to .90 inches when compared to Anker 10000 powerbanks. This makes Polanfo 20000 half as thick as Anker Powercore 10000 powerbanks and extremely easy to slip in your pockets or the handbag.
Thanks to the lithium-polymer battery technology, this mobile battery bank can pack its massive charging capacity in a very lightweight, slim and compact package. The lithium-polymer batteries give it a weight advantage of 20-30% over equivalent capacity Li-ion batteries and also offer better long-term battery life.
However, the metal edges of this portable battery pack are a bit sharp and, when combined with the all metal construction, can leave scratches on you phone’s screen. This portable mobile battery pack comes with 2 USB cables – another small but handy plus.
Fast Charging Power Bank
The Polanfo 20000 slim powerbank has one 2.1 A fast charging port and a 1 A standard USB charging port. The fast charging port will allow you to charge your smartphone at about twice the speed of the normal charging port. Both ports offer stable power that ensures complete safety for your pricey smartphones.
The battery pack itself gets charged in just 4 hours from a 2.1 Amp wall charger and in about 8 hours from a 1 Amp typical phone charger. Why Always using Fast Charging is NOT always a good idea in your power bank
Solid & Classy Aluminium Construction
The power bank has a sturdy Aluminium construction, which when combined with its light size makes it very rugged as well as good looking.
All Advanced Protection Features
The Polanfo 20000 slim powerbank comes with all advanced power bank safety features such as surge protection, overcharge, short- circuit protection protection etc.
A bright LED flashlight further adds to the functionality- a small but handy feature in emergency situations. The massive battery capacity means that as a flash light it will go on for days.
5 year Warranty – Rare among power banks
Most power banks come with 1 year warranty. The better ones come with one and half year warranty. The 5 year warranty of Polanfo 20000m slim powerbank clearly indicates confidence of the manufacturer and the seller in the quality of the product. However, the shady capacity claim does cast a cloud over the manufacturers integrity.
6 color options
Polanfo 20000 slim powerbank is available in six colors – Silver, Gold, Blue, Pink, Black, Gray – giving lots of style options.
No QuickCharge or Pass-Through Charging
In case you are wondering, this portable mobile charger does not come Qualcomm Quickcharge for ultra-fast charging and pass-through charging which lets you charge devices as the power bank itself is being charged. However, this is not a big worry given its modest 8000 capacity. The integrated fast-charging port (2.1 A) offers twice the speed of normal (1. A) charging ports and charges it in 4 hours! No slim or ultra-compact powerbank, even from other manufacturers, offers these features and therefore it is not really a concern.
A latest Quickcharge 3.0 charger such as the Aukey dual USB port QC 3.0 will also charge it in 4 hours through automatic adaptive charging.
In case you are wondering why we only mention dual port chargers: We always recommend buying a dual port charger as it allows you to charge both your phone and powerbank at once from the same power outlet! This feature can be very helpful in places such as airports, during travel, and hotel rooms where power outlets are rare.
Also, most modern power banks do not offer pass through charging anymore as it damages the battery and reduces battery-life.
Mixed Reviews from the User Base
While an Amazon rating of over 4.6 from 1000+ reviewers indicates that you it is a tried, tested and admired product, we have received disproportionately high complaints regarding the products from the users when compared with other powerbanks. The 5-year warranty and good reviews for the warranty do not exactly act as subsutitute for a customer of the Polanfo 20000 slim powerbank an the hassle of return and shipment of a low-cost defective powerbank is mostly just not worth the effort. However, that said, the Polanfo 20000 slim external battery is an incredible value for money and we think that the company can offer a real alternative buying choice to customers with some stringent quality checks before shipping the product.
Till then, we recommend that you are better off buying a reliable products from the likes of Anker, RAVPower, or Aukey such as Anker PowerCore Slim, Anker PowerCore 10000, or RAVPower 10400, or Aukey 10000.