fast charginglithium-ion batteryCC-CV charging
Why Your Phone's Fast Charger Slows to a Crawl After 80%, and It's Not a Bug
A fast charger can hit 80% in twenty-five minutes and then take another thirty-five to reach 100%. That's not a slowing charger — it's lithium-ion's CC-CV charging algorithm working exactly as designed.
Sep 2, 2026·3 min read
