How Much mAh Does a Power Bank Need? (Phone Charge)

How much mAh does a power bank need to charge your phone? It depends on your phone battery capacity.

If you are planning to buy a power bank, but don’t know how much mAh a power bank needs, then you are in the right place. Here we will tell you exactly how much mAh your ideal power bank needs. So, how much does it need?

The ideal mAh for your power bank depends on the phone battery capacity. The larger the phone battery capacity, the larger the battery of a power bank should be. A 15000-20000mAh power bank should be fine. 

But, that’s an easy answer. We have explained how much mAh your power bank needs for different devices. Let’s dive in.

What is mAh in Power Banks?

The mAh stands for milliamp Hour and it measures the capacity of a battery. The more mAh a battery has, the more times/longer it can charge a device. The more mAh a power bank has the more charging capacity it can store inside.

A 5000mAh battery can power a device that it’s drawing 100mAh for 50 hours. While a 10000mAh does the same thing for 100 hours.

Batteries with more mAh tend to last longer than those with less mAh. That’s because they consume the charging cycles much slower. However, batteries with more mAh will take longer to fully charge because it takes longer to fill 10000mAh than it takes to fill 5000mAh.

Real vs Marking Capacity

There’s a real difference between the advertised capacity of power and the real capacity of a power bank. A 10000mAh power bank won’t transfer 10000mAh to another device, it will transfer much less. It will transfer about 80/85% of the marking capacity.

Most power banks use lithium batteries that have an average voltage of 3.7V. Power banks use a USB-C port to charge a device, and these ports have a voltage of 5.1V. When manufacturers calculate the capacity of a power bank, it’s based on the 3.7V value and not the 5.1V that we use. So, the real capacity is much less.

To calculate the real capacity you need to convert the mAh to mWh and then back to mAh (with the 5V). So, 10000mAh x 3.7V (Lithium Voltage) = 37,000mWh/ 5.1V (USB-C Voltage) = 7,555mAh. When converting these values, there’s a 10% power loss from the power bank. So, a 10000mAh power bank only has 6,528mAh.

How Much mAh Does a Power Bank Need To Charge an iPhone?

Different iPhones have different battery capacities, thus requiring different power banks. Here’s the list of all iPhones:

iPhone: Battery Capacity:Power Bank Capacity for 1 Charge:Power Bank Capacity for 2 Charges:
iPhone 61810 mAh2130 mAh4260 mAh
iPhone 6 Plus2915 mAh3430 mAh6858 mAh
iPhone 6s1715 mAh2017 mAh4034 mAh
iPhone 6s Plus2915 mAh3430 mAh6862 mAh
iPhone 71960 mAh2305 mAh 4610 mAh
iPhone 7 Plus2900 mAh3411 mAh6822 mAh
iPhone 81821 mAh2142 mAh4284 mAh
iPhone 8 Plus 2675 mAh3382 mAh6764 mAh
iPhone X 2716 mAh3195 mAh6390 mAh
iPhone XS2658 mAh3127mAh6254 mAh
iPhone XS Max3174 mAh3734 mAh7468 mAh
iPhone XR2942 mAh3461 mAh6922 mAh
iPhone 113110 mAh3658 mAh7316 mAh
iPhone 11 Pro3046 mAh3583 mAh7166 mAh
iPhone 11 Pro Max3969 mAh4669 mAh9338 mAh
iPhone SE (2nd-gen)1821 mAh2142 mAh4284 mAh
iPhone 122815 mAh3311 mAh6622 mAh
iPhone 12 Pro2815 mAh3311 mAh6622 mAh
iPhone 12 Pro Max3687 mAh4337 mAh8674 mAh
iPhone 12 Mini2227 mAh2620 mAh5240 mAh
iPhone 133227 mAh3796 mAh7592 mAh
iPhone 13 Mini2406 mAh2830 mAh5660 mAh
iPhone 13 Pro3095 mAh3641 mAh7282 mAh
iPhone 13 Pro Max4353 mAh5121 mAh10242 mAh

How Much mAh Does a Power Bank Need To Charge a Samsung Phone?

There are a lot of Samsung phones, but we choose the models that people use the most:

Phone:Battery Capacity:Power Bank Capacity for 1 Charge:Power Bank Capacity for 2 Charges:
Samsung Galaxy Note 10+/Note 10+ 5G 4300 mAh5258 mAh10516 mAh
Samsung Galaxy Note 10 3500 mAh 4117 mAh8234 mAh
Samsung Galaxy Note 94000 mAh 4705 mAh9410 mAh
Samsung Galaxy Note 83300 mAh 3882 mAh7764 mAh
Samsung Galaxy Note 73500 mAh 4117 mAh8234 mAh
Samsung Galaxy S20 Ultra5000 mAh 5882 mAh11764 mAh
Samsung Galaxy S20+4500 mAh 5294 mAh10558 mAh
Samsung Galaxy S204000 mAh 4705 mAh9410 mAh
Samsung Galaxy S10 5G4500 mAh 5294 mAh10558 mAh
Samsung Galaxy S10+4100 mAh 4823 mAh9464 mAh
Samsung Galaxy S10e3100 mAh 3467 mAh6934 mAh
Samsung Galaxy S10 3400 mAh 4000 mAh8000 mAh
Samsung Galaxy S9+3500 mAh 4117 mAh8234 mAh
Samsung Galaxy S9 3000 mAh 3529 mAh7056 mAh
Samsung Galaxy S8 Active4000 mAh 4705 mAh9410 mAh
Samsung Galaxy S8 +3500 mAh 4117 mAh8234 mAh
Samsung Galaxy S8 3000 mAh 3529 mAh7056 mAh
Samsung Galaxy A50/A30/A20 4000 mAh 4705 mAh9410 mAh
Samsung Galaxy A70/ A90 5G 4500 mAh 5294 mAh10558 mAh
Samsung Galaxy A10 3400 mAh 4000 mAh8000 mAh

How Much mAh Does a Power Bank Need To Charge a Google Pixel Phone?

Here’s the list of all Google Pixel Phones and how much mAh a power bank needs to charge them:

Phone:Battery Capacity:Power Bank Capacity for 1 Charge:Power Bank Capacity for 2 Charges:
Google Pixel 4 XL3700mAh 4352mAh8704mAh
Google Pixel 4 2800mAh 3294mAh6588mAh
Google Pixel 3a XL 3700mAh 4352mAh8704mAh
Google Pixel 3a 3000mAh 3529mAh7058mAh
Google Pixel 3 XL 3430mAh 4035mAh8070mAh
Google Pixel 3 2915mAh 3429mAh6858mAh
Google Pixel 2 XL 3520mAh 4141mAh8282mAh
Google Pixel 2 2700mAh 3176mAh6352mAh
Google Pixel XL 3450mAh 4058mAh8116mAh
Google Pixel 2770mAh 3258mAh 6516mAh
Google Pixel 4a3140mAh3694mAh 7388mAh
Google Pixel 54080mAh
4800mAh 9600mAh
Google Pixel 5a 5G 4680mAh5505mAh 11010mAh
Google Pixel 6 4614mAh5428mAh 10586mAh
Google Pixel 6 Pro 5003mAh5885mAh 11770mAh

What Kind of Portable Charger Works Best for You?

Now that you have seen different phone models and their requirements you must know the type of power bank you need. You could either choose a light or heavy model.

If you don’t need a power bank daily (or twice a day), then a power bank with 5000-20000mAh is good enough. These power banks are smaller and lighter so you can carry them around. As you can see from the list above, no smartphone requires more than 10000mAh for a full charge. But, a power bank should be able to charge a phone 2 times, so a 15000mAh or 20000mAh is good enough.

If you need a power bank for heavy uses then a 40000mAh power bank is a must. These types of power banks come with large batteries so moving them around can be harder. Heavy-duty power banks also come with AC/DC ports that you can use to charge a laptop.

Final Words

A power bank is a very useful device. But, if the power bank doesn’t have enough battery capacity to charge your devices, it won’t help you. That’s why you need to calculate how much battery capacity a power bank should have to fill your needs.

 

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