Sell an iPhone with Bad Battery Health in St Helens

    Battery showing 'Service'? Sub-80% capacity? Random shutdowns at 30%? An iPhone with a tired battery is still a sellable iPhone — the offer just reflects the cost of replacing the battery for resale.

    Our phone-buying team works from a counter inside Cash Generator on Church Street — every device is graded face-to-face, with the offer broken down before you decide.

    Find Us in St Helens

    Walk-ins welcome six days a week — payment is sorted on the day, in cash or by bank transfer once you accept the price.

    PhonesForCash at Cash Generator St Helens

    41 Church Street, St Helens, WA10 1AX

    • Opening Hours: Mon–Sat 9:00am – 5:30pm
    • Phone: 01744 775978
    • Email: sthelens@cashgenerator.co.uk

    Inside Our St Helens Store

    Inside the PhonesForCash store at Cash Generator St Helens

    Our Store Exterior

    Phone buying counter at PhonesForCash St Helens

    Phone Buying Counter

    Smartphone display at Cash Generator St Helens

    Product Displays

    What 'bad battery health' really means

    iPhones use a lithium-ion battery rated for around 500 full charge cycles before degrading meaningfully. Settings > Battery > Battery Health shows the current capacity as a percentage of new — anything below 80% is considered the threshold where Apple recommends replacement.

    • Battery health below 80%
    • 'Service' message in Battery Health
    • Unexpected shutdowns above 20%
    • Performance Management throttling enabled
    • Battery drains 1% per minute or faster
    • Phone gets warm or hot during normal use

    How it affects the offer

    We deduct the cost of a battery replacement (genuine Apple parts wherever possible) from the price the iPhone would otherwise be worth. On older models the battery cost is a bigger proportion of the value, so the impact is larger; on newer models it's more modest.

    Should you replace the battery before selling?

    Usually no. The cost of a third-party replacement often outweighs the gain in resale value, and a non-Apple battery flags in iOS as 'Unknown Part' which can actually reduce the offer. If Apple themselves replaced it, that's a positive — bring the receipt.

    Bad battery health FAQs

    Same-day payment available · St Helens