Is Fast Charging Killing the Battery? a 2-Year Test on 40 Phones [video]
Postedabout 2 months agoActiveabout 2 months ago
youtube.comTechstory
calmneutral
Debate
10/100
Battery LifeFast ChargingSmartphone Technology
Key topics
Battery Life
Fast Charging
Smartphone Technology
A 2-year experiment on 40 phones tested the impact of fast charging on battery life, finding negligible effects, and the discussion highlights the study's findings on battery wear and charging practices.
Snapshot generated from the HN discussion
Discussion Activity
Light discussionFirst comment
54m
Peak period
1
0-1h
Avg / period
1
Key moments
- 01Story posted
Nov 7, 2025 at 8:45 PM EST
about 2 months ago
Step 01 - 02First comment
Nov 7, 2025 at 9:39 PM EST
54m after posting
Step 02 - 03Peak activity
1 comments in 0-1h
Hottest window of the conversation
Step 03 - 04Latest activity
Nov 7, 2025 at 9:39 PM EST
about 2 months ago
Step 04
Generating AI Summary...
Analyzing up to 500 comments to identify key contributors and discussion patterns
ID: 45853325Type: storyLast synced: 11/17/2025, 5:56:49 AM
Want the full context?
Jump to the original sources
Read the primary article or dive into the live Hacker News thread when you're ready.
Over 500 charge cycles, the iPhone fast-charge group lost only 0.5% more capacity than the slow-charge group, while the Android results were similarly negligible.
Additionally, the experiment examined the impact of maintaining battery levels between 30% and 80%, finding that this practice did reduce wear, albeit modestly. A separate test on battery aging revealed that once battery health drops below 85%, users may notice decreased battery life, with a recommendation to replace batteries around 80% health.
The findings suggest that charging habits may not significantly affect battery longevity,