8440 Batteries


We are having issues with battery life on the 8440's not lasting 8 months at best at a site with a lot of 8440 handsets. I checked the APP.LOG files of the handsets as they report battery logs. I've tracked a few batteries through all the handsets and I noticed that, as a general rule, as the fault count went up the full capacity of the battery went down. In some battery cases the full capacity went down VERY fast and fault count went up quite quickly.

What is this 'fault count' that is being tracked in the app.log files?

I do wish that the 8440s parsed this and informed the user that the battery is no good versus just appearing like there is no charge in the battery even though the battery chargers (quad stations) said the battery is full. The user experience is just frustration at that point.



Comments (8)

  • anon
    Justin Borthwick

    The fault count information is not explained simply because it is really an internal battery notification and not really directly related to what you're experiencing. It seems likely that there could be something wrong with the batteries so if they are within their warranty period, which is 12 months, then you can simply RMA the batteries and replace them.

    Dec 06, 2014
  • anon

    We are having the same ussues with batteries.  We have well over 600 phones deployed and the failure rate on batteries is very high once they get near that one year warranty timeframe.

    Jan 09, 2015
  • anon
    Justin Borthwick


    In environments that are 24 hour shift usage of the phones the batteries are going to be used more frequently and experience more charge cycles than a facility where the phones are used for 8 hours a day. This can lead to a battery being used such that it exhausts its useful life in a much shorter time period than would be anticipated. 

    If the batteries are still within their warranty period then I encourage you to simply submit an RMA for them as they are still warranted for 12 months from date of purchase. Many customers have had good experiences using the extended life batteries as they won't typically fully discharge the battery in a single shift. Because of this the batteries aren't as heavily stressed by being discharged and charged multiple times per day. 

    Jan 09, 2015
  • anon

    We have found that batteries that stay in the charger for extended periods will show a lower than full charge when used in the phone. Also, if they are in the chargers for weeks without use, they show almost no charge. Some are actually low and some are not.

    Feb 10, 2015
  • anon

    Considering the phones are primarily marketed to fields that work shifts such as healthcare you would think this would be more of a priority for Spectralink.
    We have about 500 phones and the battery life is appalling, as is the battery clip assembly which breaks if you even so much as look at it the wrong way.
    These phones really aren't fit for use in a healthcare environment.

    May 20, 2015
  • anon
    Dave Meyer

    we have over a 1000 handsets out batteries are failing at our sites with (4)gang charger not with the dual charger, is anyone experiencing the same problem?

    Jul 02, 2015
  • anon
    Stan Gasiewski

    The failure rate of the 8440 batteries once they come close to the warrenty period is very high. Your batteries will show 1/2 charged to a yellow indication or red . Spectralink says the battery life is about 14 month to 18 months . Has anyone had any response from Spectralink other than mine .

    Sep 01, 2015
  • anon
    Satn Gasiewski

    Our battery clips are breaking does anyone know how to get replacements

    Oct 05, 2015