I have never managed to get my iPhone 5S to show battery health.  It is now 
running ios 11.4 and will give me usage and standby times but not health.  My 
son’s iPhone 6 does give the health using the samr proceedure I have tried on y 
5S so perhaps it it model dependant.

Barry
iMac Retina 5K 27"
Intel Core i5 3.5 GHz 
8       GB RAM
1.0 TB HD
OS X 10.12.2










> On 24 Jun 2018, at 12:18 pm, Stephen Chape <chap...@bigpond.com> wrote:
> 
> Thank you Ronni.
> Some research to do after the weekend.
> I will keep you (and WAMUG) informed.
> 
>> On 24 Jun 2018, at 8:33 am, Ronda Brown <ro...@mac.com 
>> <mailto:ro...@mac.com>> wrote:
>> 
>> Hi Stephen,
>> 
>> iPhone Battery and Performance
>> Preventing unexpected shutdowns
>> https://support.apple.com/en-au/HT208387 
>> <https://support.apple.com/en-au/HT208387>
>> 
>> Check battery usage
>> https://support.apple.com/en-au/HT201264 
>> <https://support.apple.com/en-au/HT201264>
>> Learn more
>> iOS 11.3 adds new features to show battery health and recommend if a battery 
>> needs to be replaced. Find out more in iPhone Battery and Performance.
>> 
>> 
>>  Ronni Brown’s iPad Pro 12.9-inch 256GB 
>> 
>> 
>> On 24 Jun 2018, at 3:02 am, Stephen Chape <chap...@bigpond.com 
>> <mailto:chap...@bigpond.com>> wrote:
>> 
>>> Hi folks.
>>> 
>>> For the past couple of weeks my 6S has developed a strange behaviour.
>>> 
>>> I always turn it off at bedtime and turn back on in the morning.
>>> But now if I turn it off when the battery is at say 54%, when I turn it on 
>>> again it shows perhaps 9% and a red line.
>>> Then after a couple of seconds it turns itself off.
>>> 
>>> If I turn it back on it will repeat this behaviour.
>>> But if I then plug it in to charge it will show perhaps 53%.
>>> 
>>> Consequently I am now leaving it on at night to avoid this happening.
>>> The trouble is now I have to charge it more often.
>>> 
>>> I can’t find anything on the internet re this.
>>> Would appreciate any ideas please?
>>> 
>>> Regards,
>>> Stephen Chape
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
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> 
> 
> Regards,
> Stephen Chape
> 
> 
> 
> 
> 
> 
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