Short answer: A range (like ’20-65W’) usually indicates a charger with multiple ports or Programmable Power Supply support, where the exact output depends on voltage negotiated with the connected device — not a sign of inconsistent quality.
What ‘Trickle Charging’ Actually Means and When It Happens
Trickle charging refers to a slow, low-current charging mode used either to safely revive a deeply discharged battery or to…