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.
Inside Our St Helens Store
Our Store Exterior
Phone Buying Counter
Product Displays
What counts as a 'bad battery'
Lithium-ion batteries are typically rated for around 500 full charge cycles before degrading meaningfully. After 2–3 years of normal use, most phones land somewhere between 80% and 85% of original capacity. Below 80% is the threshold where Apple and Samsung both recommend replacement.
- Battery health below 80% (iOS) or service-battery flag (Samsung)
- Random shutdowns above 20% remaining
- Performance throttling enabled to compensate for capacity loss
- 1% per minute drain or worse during light use
- Visible battery swelling pushing the screen or back glass
- Phone running hot during normal browsing
Should you replace the battery first?
Almost never. A third-party battery replacement often flags as 'Unknown Part' (iOS) or disables battery health reporting (Samsung), which can reduce the offer by more than the replacement cost. Apple or Samsung first-party replacements with proof of work are the exception.
Swollen batteries — important
If the back of your phone is bulging or the screen is being pushed away from the frame, stop using and charging it. Swollen lithium batteries are a fire risk. Bring it in carefully and we'll handle it from there.
Phone with bad battery FAQs
Related selling pages
Bad battery health iPhones →
iPhone-specific advice.
Faulty phones →
Other phone faults.
Broken phones →
Multi-fault devices.
Sell iPhone in St Helens →
iPhone-specific advice and pricing.
Sell Samsung in St Helens →
Samsung Galaxy advice and pricing.
Sell my phone →
Search any model for a quote.
PhonesForCash homepage →
Everything we accept.