Newmar Power

Newmar PT-25W Battery Charger [PT-25W]

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  • Newmar PT-25W Battery Charger [PT-25W]
  • Newmar PT-25W Battery Charger [PT-25W]
MSRP: $871.74
— You save $117.75


PT-25W Battery Charger

Newmar’s Phase Three Series Battery Chargers employ “Smart” battery charging technology for 12-volt systems aboard marine applications including workboats, military vessels, commercial vessels, and recreational craft. This charger interacts with batteries, providing the optimum three-stage charge process for fast recovery and conditioning, maximizing performance, and extending battery life.

A selector switch adjusts output voltage to adapt to gel-cell, flooded lead-acid, or AGM battery types. An optional temperature compensation sensor also adjusts output for ideal voltage based on changes in the batteries’ ambient temperature. This model is housed in a rugged stainless steel case with a durable white powder coat finish, and the internal circuitry is polyurethane coated for maximum corrosion resistance.


  • 12-volt model
  • “Smart” circuitry provides three-stage charging – bulk, absorption, and float
  • Gel-Cell/Flooded Lead-acid/AGM battery type switch selects optimum charge/float voltages
  • Multiple isolated output banks; ammeter indicates total output current. (Except PT-7)
  • The optional sensor adjusts the output voltage based on battery temperature. (Except PT-7)
  • Current limitations prevent damage from overloading
  • Clean well-regulated output can be used as a power supply; can power loads directly without a battery in line
  • Built to last – rugged stainless steel case with a durable white powder coat finish, an optional drip shield, and marinized internal circuitry
  • Protection: Current Limiting, Thermal Protection, Forced Air Cooling, Drip Shield
  • ABS-type approval for battery charging and power supplies


  • Input VAC (50-60 Hz.): 90-132 or 180-264
  • Input Amps @ Full Load: @ 115 VAC: 6.5, @ 230 VAC: 4
  • Power Factor: .7
  • Max Output Amps: 25
  • Output Banks: 3
  • Battery Capacity (Amp-Hours): 50-250
  • Operating Temp. Rating Reference: T-4
  • Case Size Reference: A-2
  • Case Size (H x W x D): 11.2A x 7.7 x 4.75A inches (31.8A x 19.6 x 12.1A centimeters) *Note with Dripshield installed A add 1.1” (2.8 cm) to height and .92” (2.3 cm) to depth
  • Weight Lbs./Kg: 8.2/4
  • Optional Temp. Sensor Model: TCS-12/24                
  • Remote Panel Model: RP
  • Equalize Option: Yes
  • Output Indicator Reference: M-3
  • Compliance Reference: CG

Temperature Rating References:

  • Temperature: -20 degrees C to +60 degrees C
  • Derate Linearly From 100% @ 50 degrees C to 60% @ 60 degrees C

Nominal Output Voltages at Gel/Flooded Switch Settings (without Temperature Compensation):

  • Gel-Cell: 14.0 VDC Charge @ 50% load and 13.6 VDC Float @ .5 amp load
  • Flooded/AGM: 14.2 VDC Charge @ 50% load and 13.4 VDC Float @ .5 amp load

Compliance References:

  • CG: USCG CFR 183.410 (Ignition protected)
  • CE: Carries the CE mark
  • ABS: PT Series meets SVR 2009 4-8-3/5.9, Under 90 meters Rules 2006 4-6-4/7.19, and HSNC 2007 4-8-3/5.13.


  • Remote Panel, model RP, for use with all models except PT-7 and PT-40U (LEDs indicate charger output stage. Manual re-initialization of three-stage charge cycle. With 25′ of cable. Panel dimensions: 3″ H x 4.75″ W)
  • Temperature Compensation Sensor, Model TCS 12/24, for use with all models except PT 7 (-5 mV per cell degrees C, 25′ cable (40’cable optional)
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

Owner's Manual (pdf)
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