FYI-I wanted to keep my old phone,but the my cell phone carrier said they didn't have batteries for it so I needed to upgrade. I did the upgrade, but didn't really like the new phone. I recently found batteries on line for my old phone and also found the car charger for the old phone. I ordered the battery and charger and received them in 4 days (priority mail)
I went to the AT&T website and found some used "Reconditioned" phones for much less money than the new ones. In some states of the phone carrier declares that the phone has a retail value of say $199, then you must pay sales tax on that amount, even if the price is really built into the 2 year contract, and they give you the phone for signing up for 2 years at a very excessive fee.
Yes that battery place is also nice for AGM batteries for a electric wheelchair, and other small batteries, such as a emergency exit light system.
Batteriesforless is a great place to buy batteries and carry cases and battery testers. They sell a pulse load battery tester that is the only accurate way to measure the state of a battery. Most batteries provide full voltage down to 10% charge level and so you cannot use a simple volt meter to know how fully charged a battery is or when it is defective.
As batteries age they hold less and less of a charge but the output voltage will stay the same. Using these batteries can result in erratic performance from electronic devices which is why I have found the pulse load tester to be invaluable.