• Murphy

Sentinel 150P Series

The Sentinel 150P is a range of highly efficient, high performance battery chargers designed for continuous float charge and standby power applications.

Switch Mode technology improves efficiency and low heat dissipation, wide supply voltage tolerance and low output ripple all within a compact and lightweight construction design. The chargers are configured for fast, accurate charging to give optimum battery life and reliability. Each charger’s output can be OEM-configured for optimal charging of different cell types: vented/wet lead acid, Calcium-Calcium, sealed VRLA (AGM or Gel), NiCd or custom requirements. The very smooth output (< 1% ripple) allows charging of sealed or vented batteries or use as a standalone power supply.


  • CE (European Conformity) mark
Specifications Downloads
Specifications Drawer: 

Power Supply

  • Operating Voltage: 95 to 265 V AC
  • Operating Frequency: 47 - 63 Hz.

DC Charge Output

  • Nominal voltage: 12 or 24 VDC
  • Float/boost voltage: See Output Calibration table
  • Maximum current limit: 5 A
  • Voltage ripple: <1%
  • Line regulation: <2%
  • Load regulation: <2%


  • Control input: Digital (switch) input, close to –DC to activate, programmable function
  • Alarm output: Relay switched +DC, 1A max @ 30 VDC, programmable function


  • Protective cover: 1050 aluminum, 1.2 mm
  • Operating temperature: –22° F to 140° F  (–30° C to 60° C)
  • Storage temperature: –40° F to 140° F (–40° C to 60° C)
  • Humidity: 20% to 90% RH
  • Electrical safety: 2006/95/EC (EN 60065)
  • Electromagnetic compatibility: 2004/108/EC (EN 61000-6-2, EN 61000-6-4)


Dimensions for reference only. Use actual product for mounting template. For safe heat dissipation, mount product in orientation shown, with minimum air-gap clearance of 1.5 in. (40 mm)  above and below and 1.0 in. (25 mm) at each side.

 12 Volt Model24 Volt Model
W4.28 in. (108.6 mm)
H5.31 in. (135 mm)
D1.77 in. (45 mm)2.17 in (55 mm)
Fixing Holes:
X3.90 in. (99mm)
FØ 0.22 in. (5.65 mm)
 1.45 lb. (0.65 kg)1.65 lb. (0.75 kg)

Additional product documentation can be found on our product support website or by clicking the Help Center button above.