I had a phone S A660 for 5 years 3 month ago start using the charge qyuickly I tried everything and same< I just bought a new A660 and still have the same problems, it started beeping and message saying low battery in goes off

Might be the camera's battery terminals, not the battery itself. Take a qtip and some isopropyl aclohol and clean the terminals in the battery well of camera.

Did you charge it at all during the 3 months? Did you store chair on a full charge? Check to see if batteries are dead. Batteries should be disconnected and/or stored on a full charge. If left connected they should be fully charge every week.

check voltage regulator, it may b faulty, also sheck all wiring

If you've only bought it 2 months ago it will still be under warranty.

The firmware need reinstall. Do that and the phone will start working again.

yes batteries can loose charging capabilities

You should take the phone to a mobile service center and have them try to revive your dead board but i think you may need to purchase a new mainboard or new phone.

when you have a problem with anything under warranty, you take it back for new units or a refund and anything under 12 months old is under warranty
if you have lost the receipts get a copy of your bank statements as that shows where it was bought , how much it cost and when
That is a legal document to trigger a warranty action or refund

Your handset or charger has gone bad (provided you installed rechargable batteries), or both. The previous user may have installed alkaline batteries (is their a white powdery residue in the the charge compartment?), and that can ruin the charge circuit. Either way, you probably need to contact repair. You can go to www.cordlessrepair.com