iPhone battery replacement, 3G, 3GS, iPhone 4 and iPhone 4S
If you read my battery overview you may have an idea about how to properly charge the Lithium-ion battery that's in the iPhone.
If you haven't read it, here's the summary....
Lithium-ion / Lithium Polymer batteries reach 100% of their capacity in 90 minutes of charging. Every minute after that incrementally and additively ruins the battery's ability to hold a charge at all. The damage from charging it longer than 90 minutes, called overcharging, is cumulative. The heat the develops in the battery when additional current is 'pushed' into it un-binds the battery's chemistry. Charging it for 3 1/2 hours adds two hours over overcharging to the battery. Charge it for 8 hours (all night) and you will add 6 1/2 hours more of over charging to it.
Over charge it often enough and you will unbind the battery chemistry completely making it unable to hold much of a charge at all.
Since very people know this about Lithium batteries, they tend to use them as though they were the older Nickel-Cadmium (Ni-Cad) batteries where it was beneficial to completely discharge and then recharge them. Lithium batteries have the longest life when you discharge them down to 20% still charged and recharge them back up to 90% full.
Knowing this now, if you have overcharged your iPhone battery continually.. you know the "charge it overnight so it's good and ready for the next day" behavior, it may be time to replace your iPhone battery
*Especially* if your iPhone is already here for any other reason. If the LCD is cracked, or the upper glass is broken. If you sent or brought it in because of water exposure/damage and I was able to get running again, then it's practical to have me replace it while the labor is already paid for.
The tables below show what the battery replacement costs for each model of iPhone. If the iPhone (any model) is here for some other reason, add $20 to that other repair for the battery replacement.
You can either bring or send your iPhone to me.
Here is how to bring your iPhone in.
Here is how to send your iPhone in.
More on methods of payment is here:
These are comments people have sent me after they received their iPod back fixed.
My most complex iPhone water case ever
email me at firstname.lastname@example.org
with questions or to set up a repair.
Monday through Friday from 10am to 7pm, and Saturday & Sunday noon to 6pm.
I'm in Sonoma County... Northern California wine country,
2145 Service Court
Santa Rosa, Ca 95403-3139