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Each slot is independently monitored to provide the most effective. The LED indicates when the battery is charging and when the battery is fully charged.

The charger Slim K2 Efest has protection against polarity reversal , short-circuit, overload and many other safety features.

Efest Slim K2 Battery Charger Specification:

  • 2 Bay Compact USB Charger
  • Single charging speed - 1A x 2
  • LED charging indicator
  • Compatible with 18650, 20700, 21