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The Powerline Vario X charger supports 3.6V/3.7V or 7.2/7.4V Li-Ion and Li-Po battery packs, as well as AA/AAA NiMH cells. Its adjustable contacts and automatic voltage detection make it versatile and safe, preventing short circuits. The compact design, USB compatibility, and LCD display showing charge progress in 25% increments make it ideal for travelling photographers needing a portable charging solution.