iPhone X/XR/XS/Max - $95
iPhone 7/8/Plus Battery - $75
iPhone 6/6S/Plus Battery - $60
iPhone 5S/5C/5/4S/4 Battery - $50
iPod Classic Battery - $45
The #1 reason for battery problems is dropping the phone. Lithium Ion batteries were invented for high powered electronics. Lithium Ion batteries do not like impact. Overall battery life decreases the more you drop it. When hit hard enough they can swell up like a balloon, which is always neat to see. This also explains why the hoverboard kids toy was blowing up. Impact. G-Forces. Physics. Chemistry.