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Vtech 5874 phone new batteries will not hold charge. ALL connections checked & good; charge light on, but no charge in batt. Exact same problem in 2nd handset on separate charging station. Any ideas?

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: Not Registered

I had the same problem and this procedure fixes it! First, unplug the power to the main base (answering machine) for 20 seconds. Plus it back in. Put the phone that says "not registered" in the main answering machine. It will say "press the find handset for 4 seconds". Do that. It will run thru a series of stuff and will find the handset. It works! Rich (jambones.com)

Posted on Jun 01, 2007

SOURCE: Vtech 8L55 2 unit portable phone

I just had the same problem. Could be dirty terminals. I took the battery out, cleaned the terminals on the battery and phone with a pencil eraser, put the battery back in and it's working fine. (Says fully charged, where just a few minutes ago it said low battery).

Posted on Nov 09, 2007

  • 3 Answers

SOURCE: Vtech phones loosing connection to base

You are pretty close to the solution. The problem is the charge detection in the handset. All handsets on a cordless phone detect the battery level with an hexadecimal value in the memory. Each hex value equal a volt value of the battery. EX: 3.5v = 9B
3.6v = 9C 3.7v =9D etc... The problem is the hex value in your defective handset are all mess up. So 9B is not 3.5v anymore. Then your handset could last 1hr after foul charge or doesn't alert you before the phone goes dead due to low BAtt.

Posted on Nov 21, 2007

  • 103 Answers

SOURCE: charge/in use light

Typically the charge light will stay on as long as the phone is on the charger. After 16hrs, the battery should be fully charged. Leaving it on the charger constantly can actually overcharge the battery, shorening it's life. The best thing to do is use it until it tells you the battery is getting low, then charge it uninterrupted for about 8-12 hrs. Of course, that's ideal and can't always be done, but the more you can do that, the better.

Hope that helps, and please rate my answer, good OR bad.

Good luck!

Posted on Feb 04, 2008

  • 1 Answer

SOURCE: BT Studio 3500, Base station,

eventually contacted the BT team via telephone and apparently this is a common problem when using BT products with Talktalk & Virgin. To overcome this in the majority of cases, dial 1571 and connect to your voicemail, listen to the options and finally delete all messages. Hope this can be added to your list of solutions.

Posted on Sep 19, 2008

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Vtech phones loosing connection to base


You are pretty close to the solution. The problem is the charge detection in the handset. All handsets on a cordless phone detect the battery level with an hexadecimal value in the memory. Each hex value equal a volt value of the battery. EX: 3.5v = 9B
3.6v = 9C 3.7v =9D etc... The problem is the hex value in your defective handset are all mess up. So 9B is not 3.5v anymore. Then your handset could last 1hr after foul charge or doesn't alert you before the phone goes dead due to low BAtt.

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