Warning Check battery keep appearing on cordless phones... WHY ?

I'm pretty sure that would be a Dantona brand BATT-E30025CL. You can get a good look at it and buy it here: http://www.zbattery.com/2-4V-750mAh-NiMH-Cordless-phone-battery-E200-E300-LH070-3A43C2BRML1P

dont mention it please change with the essential battery

You could try leaving it on charge a bit longer but if it keeps happening it either means dock doesn't charge the battery any longer (check for the charging symbol on the phone when in dock), or the battery in the phone has had its days.

There are different kinds of rechargeable batteries. NiCad and LI ion. There are also carbon batteries that can be recharged.

Power light indicators on flashing red as warning that battery is almost depleted of functionality. ascertain that devices with extension cables deriving power from elsewhere are plugged in to reattain power to acheive regular functionality. For example, devices with red light indication as power warning would also flash yellow or green when in full power charge from another source. refer with devices user guide or manual for refering, diagnostics.

Your battery is nearing the end of its useful life. If you replace with a new battery, you will likely solve this trouble.

Find replacement at a FixYa.com advertiser, Radio Shack, www.batteries.com or other file retail outlet that sells batteries.

I had this exact same problem. I had to reset all three handsets. Select menu, system reset, replacing base, then follow directions. This worked for one unit but the other ones I had to buy new batteries eventhough they showed fully charged. Good Luck

Try to reset the handset from handset menu, maybe the eeprom setting for low battery warning threshold have been ereased . Also check ,if the battery is the oregional battery for the phone.

I have the same problem.... not sure why it happens but in fact the battery has actually been charged. If you open the battery compartment, then unplug the battery and plug it back it will work fine. Quite annoying to have to do this all the time.