Gigaset DEC phone battery problem/fault

Sam Russell · 01-03-2023 02:33PM #1

I have a Gigaset DECT phone (AS 405) that I have had for quite some time.

The original batteries were getting weak, so I replaced them with new ones. After a while, the phones would just die on a call with no warning. So I replaced them with a different brand, and they also started doing the same thing. Charging the batteries externally fixed the problem for a while, but then the same failure.

Checking the voltage of the newly charged batteries with the failed ones showed only a small difference.

Apart from this odd behaviour, the phone work well.

Any idea what is going on? Is it that new batteries are a different chemistry?

muffinhead · 01-03-2023 03:01PM

Same problem happened to my Gigaset a few years back. At the time there used to be a huge thread on the Gigaset Community forum with people complaining about the same thing but it has now disappeared. I believe the solution was that you had to use batteries approved by Gigaset - see here.

Sam Russell · 01-03-2023 10:20PM

Did getting approved batteries solve the problem?

Thanks for the link.

smuggler.ie · 01-03-2023 10:25PM

https://www.boards.ie/discussion/2058286397/gigaset-dec-phone-battery-problem-fault

Did you try it with non-rechargeable batteries? obviously do not try to charge those

Sam Russell · 01-03-2023 11:27PM

The problem is with rechargeable batteries - they work for a few weeks, and the phone just dies without any warning - usually a few seconds into a call.

The whole point is to have rechargeables.

babelfish1990 · 02-03-2023 01:08AM

https://www.boards.ie/discussion/2058286397/gigaset-dec-phone-battery-problem-fault

I had the same problem - with the original AAA cells that came with the Gigasets. I assume they are overheating from charging 24/7? I had some old mechanical 24 hour timers that I wasnt using - I stuck one on each Gigaset cradle, an programmed them to charge for the minimum time possible - 15 mins/day. This keeps them topped up without overheating

smuggler.ie · 02-03-2023 01:42AM

Battery longevity defined not by volt . Capacity(mAh) what defines how long it can run supplying required amperage. There are other properties involved, quality of "chemistry" as well , but see for yourself

https://www.youtube.com/watch?v=1kCfs4y--Kc

Hard to vouch, but i'd say photographers shops would sell better quality than pound shop. But it seam ikea beat them all :D

Sam Russell · 02-03-2023 11:20AM

The Ikea ones fail just like the others.

I thought it might be a contact issue, but no - it still happens after contacts are cleaned.

Sam Russell · 02-03-2023 11:22AM

https://www.boards.ie/discussion/comment/120304009#Comment_120304009

I might try that. It would be a possible explaination.

muffinhead · 02-03-2023 02:01PM

https://www.boards.ie/discussion/comment/120303240#Comment_120303240

I ended up replacing the phone altogether. But from the responses on the community forum it was a mixed bag, from what I recall some people started experiencing the same problem again a year or so later.

Gigaset DEC phone battery problem/fault

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