Product review: Lumsing Grand Series A1 Mini Portable Battery Charger 6700mah External Power Bank

♦ size: 7/8" x 3 7/8" x 13/16"

♦ weight: 5.1 oz

♦ capacity 6700mah

♦ number of ports: 1

♦ flashlight: yes

♦ pass through charging: No (i.e. the battery can charge while being charged itself)

♦ cable included: Yes, 1 micro USB cable



This is a compact external battery with one port and small flash light.  I am using this battery with my Android phone.  It chargers the phone slightly below optimum, but I like that is fairly small for its capacity.  The flashlight is small and not very bright, it is bright enough for emergencies like to light the key hole or something that fell on the floor of my car.



I also tested to see if the battery supports pass-through charging (i.e. whether the battery can charge mobile devices while it is being charged). This battery does NOT supports charge through charging. It can not charge while being charged.



Overall, compact for its capacity and charges my Android phone at AC level.



You can find it on Amazon by following this link.



Ali Julia review ★★★★☆

Product review: Bestoss 20000mAh Portable Charger Power Bank External Battery Pack Slim High Capactity

♦ size: 7 3/4" x 3 3/4" x 1/2"

♦ weight: 14.9 oz

♦ capacity 20000mah

♦ number of ports: 3 USB ports

♦ flashlight: no

♦ pass through charging: Yes (i.e. the battery can charge while being charged itself)

♦ cable included: Yes, 1 micro USB cable

♦ The battery can be charged using USB, micro USB, and C-type cables





This is a thin battery with a large capacity of 20000 mAh. It has three USB ports.  At first I thought it could only be charged with lightening or type-C cable, but then saw that on the side it also has a port for micro USB.  So this battery can be charged by three different cables depending on what cable you are carrying for you phone. Pretty nice!



I am using this battery with my Android phone as well as to charge stand alone speaker MP3 player placed away from the wall outlet.  I run the speaker off external battery and it gives me a good way to judge the capacity of the battery as I know exactly how many days I can get out of it before the speaker runs out of juice.  This battery compares well with my best battery giving three days of power. My phone is charged at the optimal rate (I am including screen shots of the power meter readings).  It chargers the phone slightly below optimum, but I like that is fairly small for its capacity. 



I also tested to see if the battery supports pass-through charging (i.e. whether the battery can charge mobile devices while it is being charged). This battery does supports charge through charging. It can charge devices while it is being charged itself.



Overall, compact for its capacity. Its capacity and rate of charing compares well with  my best external batteries.



You can find it on Amazon by following this link.



Ali Julia review ★★★★★

Product review: Shinngo 6700mAh Ultra Compact Power Bank

♦ size: 3 3/4" x 1 3/4" x 7/8"

♦ weight: 4.4 oz

♦ number of ports: 1

♦ flashlight: no

♦ pass through charging: no (i.e. the battery can charge while being charged itself)

♦ cables: 1 micro USB cable



The external battery performed well using Nexus 5 and iPad Mini.  Both charged at their optimal rate using the same single port. Pretty good! 



iPadMini 4.65 / 1.53A

Nexus 5 Android phone: 5.00V / 1.10A



I also tested to see if the battery supports pass-through charging (i.e. whether the battery can charge mobile devices while it is being charged). This battery does NOT supports charge through charging. It can not charge while being charged.



The battery is pretty compact for its capacity 3.75" x 1.75" x 7/8".  The capacity allows me to charge my phone twice from almost empty to full.



You can find it on Amazon by following this link.



Ali Julia review ★★★★★

Product review: Type-C / USB-C Input & Output Lumsing QC 3.0 13400 mAh High-Capacity Power Bank

Type-C / USB-C Input & Output Lumsing QC 3.0 13400 mAh High-Capacity Power Bank







♦ size: 3 7/8" x 3 1/8" x 7/8"

♦ weight: 9.3 oz

♦ number of ports: 2 (one Type A USB, one Type C USB)

♦ flashlight: yes, but it is not bright

♦ pass through charging: no (i.e. the battery can charge while being charged itself)

♦ cables: 1 micro USB cable



The external battery performed well using Nexus 5 on with micro USB and Nexus 6p with type C cable.



The type C port can be used both to charge the battery and to charge devices that can take type C cable.  I am using this battery charger for Nexus 6p, and it is nice that I can carry only one cable, the type C cable.  I can recharge the phone three times.



The battery can be charged either using micro USB cable ot type-C cable. I was curious which one will charge the battery faster.  Type-C cable is a little faster.

Using micro USB cable the battery charger: 4.80V / 1.42A

Using type-C cable: 4.80V / 1.55A



Nexus 5 using micro USB cable: 4.97V / 1.12A using the Lumsing battery

Nexus 6p using type-C cable to type-C USB cable: 1.79A using the Lumsing battery

Nexus 6p using type-C cable to type-A USB cable: 2.20A using the Lumsing battery



For comparison, I use type-C to type-C cable and a wall charger: 2.13



I also tested to see if the battery supports pass-through charging (i.e. whether the battery can charge mobile devices while it is being charged). This battery does NOT supports charge through charging. It can not charge while being charged.



You can find it on Amazon by following this link.





Ali Julia review ★★★★★