Dead HBH-35?

Archived from groups: alt.cellular.ericsson (More info?)

Hi,

I've just gone to charge up my HBH-35 headset, which hasn't been used
for a couple of months, and it won't charge!

Instead of the solid red light I get a flashing red light and the
battery isn't charging at all.

Anyone know what the problem might be? Has it just gone so flat that it
won't charge? Is there anything I can do or is it toast?

Many thanks.
--
Toby

Archived from groups: alt.cellular.ericsson (More info?)

In article <61RJe.8112$p%3.35414@typhoon.sonic.net>, John Navas
<spamfilter0@navasgroup.com> wrote:

> [POSTED TO alt.cellular.ericsson - REPLY ON USENET PLEASE]
>
> In <+oocDIAaY99CFwOm@iconia.org.uk> on Mon, 08 Aug 2005 22:01:02 GMT, Toby
> Groves <news@iconia.org.uk> wrote:
>
> >I've just gone to charge up my HBH-35 headset, which hasn't been used
> >for a couple of months, and it won't charge!
> >
> >Instead of the solid red light I get a flashing red light and the
> >battery isn't charging at all.
> >
> >Anyone know what the problem might be? Has it just gone so flat that it
> >won't charge?
>
> Sounds like it.
>
> >Is there anything I can do or is it toast?
>
> Toast.
>
> I had the same thing happen to an old HBH-30. Lifespan is limited by the
> battery technology.

Batteries need a base level charge or it'll die. That's my experience
too. However, a dealer once resurrected a rechargeable battery by
putting a higher current/voltage in to "jump" start it. It did work, as
if to just get to a certain base level.

--

Archived from groups: alt.cellular.ericsson (More info?)

On Tue, 09 Aug 2005 03:03:00 GMT, Artoi <Artoi@hotmail.com> wrote:

>In article <61RJe.8112$p%3.35414@typhoon.sonic.net>, John Navas
><spamfilter0@navasgroup.com> wrote:
>
>> [POSTED TO alt.cellular.ericsson - REPLY ON USENET PLEASE]
>>
>> In <+oocDIAaY99CFwOm@iconia.org.uk> on Mon, 08 Aug 2005 22:01:02 GMT, Toby
>> Groves <news@iconia.org.uk> wrote:
>>
>> >I've just gone to charge up my HBH-35 headset, which hasn't been used
>> >for a couple of months, and it won't charge!
>> >
>> >Instead of the solid red light I get a flashing red light and the
>> >battery isn't charging at all.
>> >
>> >Anyone know what the problem might be? Has it just gone so flat that it
>> >won't charge?
>>
>> Sounds like it.
>>
>> >Is there anything I can do or is it toast?
>>
>> Toast.
>>
>> I had the same thing happen to an old HBH-30. Lifespan is limited by the
>> battery technology.
>
>Batteries need a base level charge or it'll die. That's my experience
>too. However, a dealer once resurrected a rechargeable battery by
>putting a higher current/voltage in to "jump" start it. It did work, as
>if to just get to a certain base level.

Many can be resurrected if you get a surface charge on them
For example the MAHA 777 II chargers won't give up on a battery until
it is tried charging it at 850ma for 3 minutes. However I have some 30
and 15 minute AA chargers that refuse to charge a truely dead NiMh or
NiCd.

For those, I connect them up to a lab supply set for 1 amp at 1.25
volts. Takes about 15 seconds for the current to come down from the 1
amp limit to about 30ma. Once that has been done to them, they charge
just fine in a fast charger.

Archived from groups: alt.cellular.ericsson (More info?)

In article <j1dif1hrsofk4s0t59sbljd1ddp6b7buav@4ax.com>, matt weber
<mattheww50@cox.net> writes
>For those, I connect them up to a lab supply set for 1 amp at 1.25
>volts. Takes about 15 seconds for the current to come down from the 1
>amp limit to about 30ma. Once that has been done to them, they charge
>just fine in a fast charger.

Right, well I've just given this a try.

Noticed the SE charger is rated at 5.1v/450ma and my Nokia charger is
5.7v/800ma so I decided to give it a bash using the Nokia charger and
some bits of wire.

Amazingly as soon as I made contact with the terminals I got the solid
red light which should indicate charging. I left it connected to the
Nokia charger for about 2 mins and then plugged the SE charger back in
and I now have a solid red light from that too.

Will have to wait to see if it charges and works but fingers crossed
this has sorted it. Many thanks Matt
--
Toby

Archived from groups: alt.cellular.ericsson (More info?)

In article <3p0tf1p5k7haibq45r8g6h8r2l7poejvil@4ax.com>, matt weber
<mattheww50@cox.net> writes
>alternatively, you can keep trying to charge it with the supplied
>charger. Connect, when it starts to flash, disconnect, wait a minute
>and try again. It may take 10-20 attempts to get enough charge on it
>to properly charge. I've done that with AA NiMh's and a fast charger.

All revived and working again, many thanks
--
Toby

I had a similar problem - dead after 3 months of no use - no lights worked at all albeit the light flashed once when I tried a car charger.

I took off the battery cover and connected a 6v torch battery to the terminals, positive to the end closest to the headset itself. I then touched the negative on the other end observing a small spark as it connected.

I held the connection for 5-10 seconds.

Once this was complete connecting the charger indicated green and the headset was discharged over 30 hours until flat.

Connecting the charger then indicated a red light with the light turning to green after a suitable charging period.

The battery appears to be 'kick' started as described above and is working ok now. The charger while saying 5.7v was something like 5.1v when checked with a DVM. The car cigarette lighter was slightly higher voltage. Neither worked without kick start.