On Thu, 7 Feb 2019 12:52:46 -0000, "NY" wrote:

Is there a problem with replacing them with batteries that can hold more
charge ie 750 mAhr.

No problem...

I presume the phone will still charge them at its
standard rate (though it may take longer to charge them).

Correct. Some phones like to have the batteries charged once and then run down
to zero-dead-nothing, as this calibrates the charge meter. Do it, because even
if it doesn't do this, doing it won't harm anything...

I will go for branded (eg Duracell) rechargeable batteries.

Good choice.

I presume that if the original batteries are NiMH, I should go for that same
technology.

Yup.


Thomas Prufer