13000mah and 20000mah

[veltix]

How many times can a 13000mah and 20000mah power bank charge your phone?

 

[tsupersonic]

Depends what phone... If we're talking about an iPhone 6/6s, then you could get more charge out of 13k/20k battery packs than something like a G4/Note 5/6P, etc.

 

[paperwastage]

Take that number, multiple it by 0.7 to factor in power losses from voltage conversion

So 9100 and 14000mah

Divides those numbers by the capacity of your phone. Eg, nexus 6p is 3450mah

Note that some external battery manufacturers may overstate their mah rating

 

[veltix]

Charging up my note 2.

 

[Yuriman]

How big is the battery you have in your Note 2?

If it's 3,100mah, and you're charging it from a 13,000mah battery pack, basic math tells me that you can get no more than around 4 charges, assuming no conversion losses and all of the batteries have their full rated capacity.

 

[paperwastage]

Charging up my note 2.

note 2 has 3100mAh battery

so about 2.9x and 4.5x respectively. batteries degrade, so expect those multipliers to go down in time


think about replacing your note2's battery, or get a zerolemon 9300mAh extended internal battery

 

[core2slow]

I have a 4100mah battery so probably 2.5x and 3.5x, respectively, with voltage loss.