Slim, integrated, compact and delivering 400 watt hours at a weight of only around 2 kilograms, it's a real energy champion: The CompactTube 400 with innovative battery cell technology offers the highest energy density of all Bosch eBike batteries.

• Smart System compatible
  
• Ideal choice for sporty, light eMTBs, minimalist eGravel bikes or design-oriented eUrban bikes
  
• Approx. charge times:
  
  • 4A Charger (50% Charge 1.5h / 100% Charge 3.5h)
    
  • 2A Charger (50% Charge 2.8h / 100% Charge 6h)