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.


  • Charger Input - Voltage: 115/230v
  • Charger Output - Amps: 25a
  • Charger Output Voltage: 12v
  • Charging Banks: 3
  • Inverter Input Voltage: 115/230v
  • Inverter Output Voltage: 12v
  • Outlet Qty: Hardwire
  • Portable: No
  • Box Dimensions: 10"H x 10"W x 16"L WT: 9.5 lbs

Owner's Manual (pdf)
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