Exchangeable Battery for iPhone 6S+/6+, iPhone 6S/6?

Since battery life is among the top 3 concerns of iPhone users, expanding the original battery capacity is the most “beautiful” and convenient choice. No ugly case, heavy power-bank is needed. As a result of it, there are many people wondering that whether the iPhone 6S Plus /iPhone 6 Plus and iPhone 6S /6 can share the same battery since they feature the same body size and the iPhone 6/6+ users can upgrade their battery capacity by replacing the 6S/6S+’s batteries. Some even did a test to figure out whether they are exchangeable. Here we did some researches and this detailed information about iPhone 6S Plus and iPhone 6 Plus battery comparison below may help you out of this puzzle. By the way, the iPhone 6S and 6 battery comparison is also included.

1. Specifications comparison

Specifications/Model iPhone 6 iPhone 6S iPhone 6 Plus iPhone 6S Plus
Battery Type Non-removable Li-Po battery (6.91 Wh) Non-removable Li-Po battery (6.55 Wh) Non-removable Li-Po battery (11.1 Wh) Non-removable Li-Po battery (10.45 Wh)
Capacity 1810mAh,3.82V 1715mAh,3.82V 2915mAh,3.82V 2750mAh,3.80V

Some people may think that both the iPhone 6S and iPhone 6S Plus battery capacity is smaller than 6 and 6 Plus, so the battery life will be shorter at the same time. However, we have get some data from ANANDTECH to show you.

iPhone 6 series battery life comparison iphone 6 series battery life comparison 2

iphonebatterycomparison1

Because of the differences of hardware between 6S series and 6 series, of course there are differences in the power consumption. So we can’t define exactly which one features longer battery life. Some people think of buying an iPhone 6 Plus battery to install into the iPhone 6S Plus so that the phone can last up longer since the iPhone 6 Plus owns 2915mAh while iPhone 6S Plus is 2750mAh, plus the battery dimensions look like the same, that may deserves a try to those people. On the other hand, however, is there any possibility to do so? The truth is that there are some differences between these batteries.

2. Dimension comparison

A. For iPhone 6S Plus & 6 Plus Comparison

5.iPhone 6s plus vs 6 plus battery connector1

8.iPhone 6s plus vs 6 plus battery thickness B. For iPhone 6S & 6 Comparison 1.iPhone 6 vs iPhone 6 battery connector1

4.iPhone 6 vs iPhone 6 battery thickness From the picture above we can see that iPhone 6S Plus & 6 Plus, iPhone 6S &6 are almost the same body size, apart from the little difference in thickness.

3. Flex connector comparison

A. For iPhone 6S Plus & 6 Plus Comparison 6.iPhone 6s plus vs 6 plus battery connector

7.iPhone 6s plus vs 6 plus battery connector B. For iPhone 6S & 6 Comparison 2.iPhone 6 vs iPhone 6 battery connector

3.iPhone 6 vs iPhone 6 battery connector

However, when compared to their battery connectors, there are some differences neither in shape nor length of the connectors for iPhone 6S & 6, which makes them NOT possible to match well to the motherboard. Luckily we can see that 6S Plus and 6 Plus battery connectors are the same, thus we made a deeper move to 6S Plus&6 Plus battery.

4. Installation comparison

From the pictures below, we put the iPhone 6 Plus battery into the 6S Plus, the connectors & installation position matched well and it works fine within our testing time.

09iPhone 6 plus vs iphone 6s plus installation1

10iphone 6 plsu vs iphone 6s plus

We did this test and found that even though there are little difference in battery thickness between them, still they can be installed well in to with each other’s body.

Conclusions:

According to our battery test, the 6S and 6 can’t share the same battery because of different battery connectors,which makes it impossible to connected well to the motherboard. As for iPhone 6S Plus and iPhone 6 Plus, we can exchange battery for each other and it worked for a while within our testing, however we can’t assure that the 6 Plus battery can work in an iPhone 6S Plus for a long time without any bad effects. Because our testing time is limited, and we recommend you to use the original mating battery for your iPhone. Any questions do not hesitate to share with us!

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  1. BY Jean-Pierre Bourroux
    |

    I am ready to buy a battery for Telephone Apple 6 S plus but i need to get also the stickers. would you please tell me if you can supply them.
    Thanking you in advance.
    Jean-Pierre Bourroux

  2. BY SAM
    |

    it’s not clear, will ip6 battery physically fit iph6s ? If so, then we can mod iph6 battery by swapping iph6s connector.

    • BY Felipe
      |

      Hola, yo hice el cambio de conectores de una Batería de iP6s a una Batería de iP6 y funciono perfectamente. Ten invito a probarlo! 😀

      • BY kaye
        |

        You are great!

    • BY kaye
      |

      Hi Sam, According to our battery test, the 6S and 6 can’t share the same battery because of different battery connectors,which makes it impossible to connected well to the motherboard.

  3. BY Nitrog
    |

    Can you make such test involving iPhone 7/7+ and 6s/6s+ batteries? I wonder if it’s possible to replace the 6s’ for the one from 7.

  4. BY Appleseed
    |

    True… I was expecting to see the internet use chart for the iphone 6s+ (with iphone 6+ battery)

  5. BY Leyser Calero
    |

    Nice comparison, now only should test the batteries exchanges iphone 6S and 6S plus and test performance.

    • BY alex
      |

      has anyone tried this yet?! need to know asap.

      • BY kaye
        |

        Hi Alex, the 6S and 6 can’t share the same battery because of different battery connectors,which makes it impossible to connect well to the motherboard. Need iPhone 6s and 6 battery please visit https://www.etradesupply.com/

    • BY Roland
      |

      Yes , I’m with you .
      •Would like to see 6s iPhone with 6s plus battery in it .
      •Reason: bigger battery capacity in mAh, also much cheaper to buy .

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