Question about Vtech i5808 Cordless Expansion Handset

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Vtech phones loosing connection to base

I bought a new i5808 replacement battery online from the vtech website, and received it yestereday. Question, how do I know if its charging correctly? My two phones(i5871 and i5808)were giving me a low battery,constantly loosing signal to the base and had static in the line after a year of use.(thats expected)I'm not sure if my phone is charging right. I let it charge overnight, and this morning I tested it and it seemed to work fine.(connection to base was excellent, no static and signal was not lost when walking aroung the house) When I went to put it on the handset charger, is displayed battery low. When setting the phone on the base and the amber light comes on, that means its charging right? Is there some firmware update im missing or a setting on the phone that I am not looking at the regulates charging options? This is a great phone and I love the options. I figured I buy a battery first and test it on the i5808. If it fixed the low battery, static, and connection loss issue I buy another battery for the i5871.

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Re: 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

Re: Vtech phones loosing connection to base - Vtech i5808 Cordless Expansion Handset Phones

Vtech supplies terrible batteries

Posted on Jun 27, 2008

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My handset displays CONNECTING...
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This model of phone have serious problem regarding the battery. This phone use a lot of juice out of the battery. I'm pretty sure that when your battery is foul charge it doesn't do it. So the problem is in the handset. When your battery starting to get to low you loose your connection. Why?...Because the detection to LOW_BATT in your handset is not calibrate adequately. So it thinks that the batt is weak, to weak to make a conversation.

The other problem could be that your handset doesn't really foul charge your battery. So when you are to far from the base or talking for to long . There's not enough power in the battery to raise the output signal level(db) to your base.

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