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Lithium-ion batteries don't wear out evenly. They age fastest at the very top and very bottom of their charge range, which is why keeping your phone between roughly 20% and 80% can meaningfully extend its lifespan.

Why the top 20% is the hardest on your cell

Holding a battery at 100% keeps the cell under constant voltage stress. Over months, that stress shows up as lost capacity — the phone that once lasted all day now needs a top-up by mid-afternoon.

bCare's charge alarm is built around exactly this. Instead of leaving your phone plugged in until morning, a gentle alarm at 85% tells you the healthy moment to unplug.

"You don't need to obsess over percentages — you just need to stop charging to 100% every single night."

A simple routine that works

  • Set a charge alarm at 85% for everyday use.
  • Top up in short bursts rather than one long overnight charge.
  • Keep the phone cool — take thick cases off while charging.
  • Only charge to 100% when you genuinely need a full day of runtime.

Follow this for a few weeks and bCare's health score will reflect it: slower wear, fewer deep drains, and a battery that stays healthier for longer.