| | Re: Battery keeps cutting out
All LI batteries used in all cellphones can deteriorate if allowed to discharge below 25%.
the result is although they look ok when charged they will drop very quick, sometimes in minutes. Your information sounds like you need to replace the battery if your sure the charger is working. Try an alternate charger to verify.
do not but a cheap knockoff. Only buy a Blackberry OEM battery from a trusted source.
I purchased two recently from Amazon. A Z10 was about $5.00 US
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