Love My Disposable Batteries

@x475aws said:

Spheres contain a 675-sized rechargeable battery and are big

Hi @x475aws This is the problem with the internet as the information they gave is speculation rather than know how. It’s not a 675 size cell. And 2mm difference on a hearing aid is big.

It’s always the same phenomenon in the clinic: user walks in, needs performance and battery time, but when they see the consequence on size the moment you put different alternatives on the table they go “ohh… I prefer the smaller”. Cosmetics is important. And yes, there is the market segment who learned that performance for longer time is key. And the question is where one sets the trade-off between

1. size (ie cosmetics & comfort)
2. battery time
3. or alternative ways to charge during the day

Especially on point 3 I believe the systems could improve in terms of a) reliably charge and b) knowing better how people would charge on the go

@Bimodal_user said:

“In series,” which means when there are two at once, they give 2 x 1.45 V = 2.9 V, closer to the 3.7 V of Li-ion rechargeables.

Presumably they get some engineering advantage from the higher voltage achieved by connecting the two batteries in series rather than parallel, and it doesn’t make any difference to the user. This doesn’t mean that the device couldn’t be made to work on 1.45V supply voltage. For what it’s worth, human nerve potentials are in the tens of millivolts.

@Michael_Phonak said:

the question is where one sets the trade-off

It’s not so long ago that you (the manufacturers) let us make our own decision within the limited technology choices then available. Aids came with a choice of battery sizes, so one customer could choose a smaller device with shorter runtime, and another could pick a larger device with longer runtime. Now that there are more technology options, you’re sticking us with the dreaded “one size fits all” on these very expensive devices.

In 2022 I was so glad I didn’t have rechargeable hearing aids during Hurricane Ian. We were without power for 8 days. I was President of our condo association and needed to be able to interact with contractors.

8000mAh Powerbank op Zonne-energie met Dynamo - Ingebouwde Zaklamp | Stuff Enough.be7 looks another option, but you’ll need to know it in advance

How are you folks keeping your cell phones charged?