Question about IBM 4900 4-Line Cordless Phone

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4900 phone problems

About 11 months after purchasing the 4900 cordless phone the low battery light flashes and the battery doesn't seem to charge from either location on the phone. When I measure battery voltage at the battery it shows 4 volts, maybe the current is not getting to the handset? Office max would not warranty it so I boxed it up for a while but would like to get it working. Thanks

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Re: 4900 phone problems

Probably need new battery, you can get one here - IBM 4900 Cordless battery

Posted on Jul 16, 2009

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Hello patricia arr, I have a solution for you.

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I would like for you to set up all your uniden phones for the charger jacks. Then please wait several minutes for the phones to gain a suitable charge for TESTING. Before picking up a phone to test it, please unplug all phones for electric power , THIS INCLUDES the charging jacks, answering machine, main unit etc. Wait one minute then plug all devices back in. If your still have issues, please take out the new battery that you purchased and try it on a different uniden phone. If the problem persists, then the battery (NEW) is a bad battery. If the problem does not persist, then you know it is the HANDSET. Please come back with more issues as I would love to provide expert solutions for you free of fee.

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The sound and flash is when the contacts on handset touch contacts on base, if the handset is positioned correctly- check the contacts, wipe them over with a clean lightly damp cloth. If the problems persist I suggest new batteries which can be purchased from Idect directly by calling 0845 345 9677- they will be posted by First Class Post and do not charge P+P.

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hi, does it flash when you are charging it? if yes its normal...or does it flash when the battery is low? if yes its also normal.

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it seems that the battery in the phone is dead. replace it with new batteries, always go for rechargeable alkaline batteries.

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Okay, this solved it for me, so maybe it'll help others.

Basically, you just need to re-register the phones by placing each one on the base unit and leaving it there for at least five seconds after the charge/in use LED light stops flashing.

According to the manual, it's necessary to re-register each phone after a power failure or if the batteries get very low or die. If you're experiencing the "connecting..." problem, this will probably fix it!

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