Block Battery S401 400Wh Switchable Dual-Voltage NiMH Block Battery

(No reviews yet) Write a Review
18.00 LBS

Product Overview


Power your camera, light, or other production equipment with the Block Battery S401 400Wh Switchable Dual-Voltage NiMH Block Battery. The S401 is a 400Wh capacity NiMH battery that provides two 14.4V 4-pin and two 28.8V 3-pin XLR outputs to fit your various equipment needs.\

The two regulated 28.8V 3-pin XLR outputs are activated with a switch and provide a 14Ah output, and a green light indicates when they are active. The two 4-pin XLR outputs provide 10 to 17V, 28Ah of power output at a nominal 14.4V. The unit also features two standard, replaceable 15A fuses.

The S401 also features four cooling fans that automatically kick in when the battery is charging. It also has an LCD screen for viewing your output current and battery capacity status. The S401 can only be charged using a BlockBattery EFC-2 or 2F1 charger, and it takes approximately five-and-a-half hours to charge fully from an empty state.


  • Dual-voltage 14.4/28.8V 800Wh NiMH battery station with switchable output
  • Two 3-pin regulated 24V and two 4-pin 14.4V XLR outputs; output selector switch
  • Monitor power stats with LCD screen
  • Charges on BlockBattery EFC-2 or 2F1 chargers only; 5.5-hour charge from empty to full
  • Two replaceable 15A standard fuses
  • Cooling fans enable automatically when charging


Battery Capacity 400 Wh
Battery Chemistry NiMH
Output Voltage 28.8 and 14.4 VDC, Switchable Dual-Voltage
Output Ports 28.8 V: 2 x 3-Pin XLR
14.4 V: 2 x 4-Pin XLR
LCD Screen Yes
Cooling Design 4 x Fans Auto-On when Charging
Fuse Protection 2 x 15 A Fuses, Replaceable
Compatible Chargers BlockBattery EFC-2 or 2F1
Storage Temperature 41° to 77°F / 5° to 25°C
Dimensions 13.2 x 7.5 x 5.3" / 33.5 x 19 x 13.5 cm
Weight 18 lb / 8.16 kg


(No reviews yet) Write a Review