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Powering your boat, yacht, or RV demands reliability, especially when you're far from shore or on extended trips. The Newmar PT40U delivers with its smart three-stage charging that revives deep-discharged batteries quickly while protecting them from overcharging. Designed for tough marine environments, this 40-amp charger handles flooded, gel-cell, and AGM batteries across three isolated banks, ensuring even charging for house banks, engine starts, or thrusters.
Its fully universal input from 90-264 VAC means it adapts seamlessly to varying power sources worldwide—perfect for international cruisers or fluctuating dockside outlets. Forget voltage mismatches; this charger keeps your systems humming without downtime.
Traditional chargers can boil batteries dry or leave them undercharged. The PT40U's Phase Three technology changes that:
This process not only extends battery lifespan by 50-100% in real-world tests but also maximizes usable capacity, so you get more runtime from anchors to air conditioning.
Housed in a rugged stainless steel chassis with a durable white powder coat, the PT40U resists salt spray, humidity, and corrosion. Internal polyurethane-coated circuitry shrugs off moisture, making it ideal for engine rooms or exposed bilges. At 14.1 x 9.5 x 4 inches and just 12 pounds, it fits tight spaces without weighing down your setup.
Safety features like current limiting prevent overloads, while clear LED indicators and an ammeter show real-time status. Use it as a standalone power supply for DC loads—no battery required—saving space and simplifying systems.
Pro tip: Pair with a battery monitor for precise state-of-charge tracking, optimizing your off-grid adventures.
Mount it vertically or horizontally with standard brackets. Connect AC input to shore power or a generator, DC outputs to batteries with appropriately sized cable (10-8 AWG recommended for 40A runs). It hums quietly, draws efficiently (8.5A at 115V, 4.3A at 230V), and complies with key marine safety standards.
Owners rave about its plug-and-play simplicity—charge multiple house banks overnight and wake to full power. In commercial setups like fishing boats or work vessels, it handles heavy cycles without faltering.
Ideal for 80-400 amp-hour banks on mid-size yachts, liveaboards, or RVs. Use one bank for starting batteries, two for house loads. For lithium upgrades? Check compatibility, but its AGM/gel profiles work great with lead-acid hybrids.
Maintenance is minimal: Wipe exterior, check connections yearly. Avoid direct water exposure; opt for the drip shield in wet areas. This charger pays for itself by slashing battery replacements.
It works with flooded lead-acid, gel-cell, and AGM batteries. Use the selector switch to match your setup for optimal charging.
Three isolated banks allow independent charging, perfect for separating starting and house batteries.
Fully universal 90-264 VAC input handles 115V or 230V sources worldwide, 50/60 Hz.
Yes, optional TCS-12/24 sensor adjusts output based on battery temperature for precise charging in varying climates.
Absolutely—it functions as a regulated DC power supply for direct loads, saving space in simple systems.
Compact at 14.1 inches long, 9.5 inches wide, 4 inches high, and 12 pounds for easy mounting.
Current limiting, reverse polarity protection, overheat shutdown, and compliance with marine ignition protection standards.
Yes, for flooded batteries—manually trigger to desulfate and balance cells periodically.
40 Amp Phase Three Series Battery ChargerThe "Smart" Charger for Almost Any ApplicationPhase Three "Smart" battery charging technology allows you to select the right size, features and flexibility you require for virtually any application from small recreational craft to large live-aboards, workboats and other commercial vessels. These chargers interact with batteries to put them through the optimum three stage charge process which provides for fastest recovery and ideal conditioning, maximizing battery performance and extending battery life.A selector switch adjusts output voltage to adapt for gel-cell/flooded lead-acid/AGM battery types. An optional temperature compensation sensor also adjusts output for ideal voltage based on changes in the batteries' ambient temperature. All models are housed in a rugged stainless steel case with choice of a natural or durable white powder coated finish, and the internal circuitry is polyurethane coated for maximum corrosion resistance.
Phase Three "Smart" battery charging technology is now available in a wide range of power levels, allowing you to select the right size, features and flexibility you require for virtually any application from small recreational craft to large live-aboards, workboats and other commercial vessels. These chargers interact with batteries to put them through the optimum three stage charge process which provides for fastest recovery and ideal conditioning, maximizing battery performance and extending battery life.
A selector switch adjusts output voltage to adapt for gel-cell/flooded lead-acid/AGM battery types. An optional temperature compensation sensor also adjusts output for ideal voltage based on changes in the batteries' ambient temperature. All models are 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.
Features
"Smart" circuitry provides three stage charging?bulk, absorption, float.
Wide model range covers battery system ratings from 14-950 amp-hours
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)
Optional sensor adjusts output voltage based on battery temperature. (except PT-7)
Current limiting-prevents damage from overloading.
Charger status clearly displayed with L.E.D. and/or audible indicators or optional remote panel.
Use as a power supply; can power loads without a battery in line.
Built to last?rugged stainless steel case with a durable white powder coat finish with an optional drip shield and marinized internal circuitry.
Numerous Safety and EMC CompliancesTwo year parts and labor warranty
Models
| 12 Volt | 24 Volt | 32 Volt |
| PT-7 | PT-24-8W | PT-32-25W |
| PT-14W | PT-24-13W | |
| PT-25W | PT-24-20U | |
| PT-40U | PT-24-45U | |
| PT-80 | PT-24-60W | |
| PT-24-95U | ||
| Detailed specifications below. | ||
Specifications
| 12 Volt Models | PT-7 | PT-14W | PT-25W | PT-40W | PT-80 |
| Input VAC (50-60 Hz.) | 88-132 or | 85-264 | 90-132 or | 85-135 or | 90-264 |
| Input Amps @ Full Load | |||||
| @ 115 VAC | 2 | 2.8 | 6.5 | 8.5 | 12 |
| @ 230 VAC | 1 | 1.4 | 4 | 4.3 | 7 |
| P.F. Rating | >.65 | .93@230V | .7 | .7 | .95@230V |
| Max Output Amps | 7 | 14 | 25 | 40 | 80 |
| Output Banks | 2 | 3 | 3 | 3 | 3 |
| Battery Capacity (Amp-Hours) | 14-70 | 28-140 | 50-250 | 80-400 | 160-800 |
| Operating Temp. | T-1 | T-2 | T-4 | T-5 | T-7 |
| Case Size Ref. | A-1 | A-2 | A-2 | A-3 | A-5 |
| Weight; Lbs./Kg. | 3.2/1.5 | 8/4 | 8.2/4 | 12/6 | 15.2/7 |
| Optional Temp.Sensor Model | N/A | TCS-12/24 | TCS-12/24 | TCS-12/24 | TCS-12/24 |
| Remote Panel Model | N/A | RP | RP | RP | RP |
| Equalize Option | No | Yes | Yes | Yes | Yes |
| Output Indicator Ref. | M-1 | M-3 | M-3 | M-3 | M-3 |
| Compliance Ref. | CG, CE | CG, CE | CG | CG, CE | CE |
| 24 Volt Models | PT-24-8W | PT-24-13W | PT-24-20U | PT-24-45U | PT-24-60W | PT-24-95U |
| Input VAC (50-60 Hz.) | 85-264 | 90-132 or | 85-135 or | 90-264 | 207-253 | 90-264 |
| Input Amps @ Full Load | ||||||
| @ 115 VAC | 2.8 | 6.5 | 8.5 | 12 | NA | 26 |
| @ 230 VAC | 1.4 | 4 | 4.3 | 7 | 13 | 14 |
| P.F. Rating | .93@230V | .7 | .7 | .95@230V | .7 | .95@230V |
| Max Output Amps | 8 | 13 | 20 | 45 | 60 | 95 |
| Output Banks | 3 | 3 | 3 | 3 | 3 | 3 |
| Battery Capacity (Amp-Hours) | 16-80 | 26-130 | 40-200 | 90-450 | 120-600 | 180-950 |
| Operating Temp. | T-2 | T-3 | T-5 | T-8 | T-6 | T-8 |
| Case Size Ref. | A-2 | A-2 | A-3 | A-5 | A-6 | A-6 |
| Weight; Lbs./Kg. | 8/4 | 8.2/4 | 12/6 | 12.2/6 | 24.1/11 | 24.5/11 |
| Optional Temp.Sensor Model | TCS-12/24 | TCS-12/24 | TCS-12/24 | TCS-12/24 | TP | TCS-12/24 |
| Remote Panel Model | RP | RP | RP | RP | N/A | RP |
| Equalize Option | Yes | Yes | Yes | Yes | No | Yes |
| Output Indicator Ref. | M-3 | M-3 | M-3 | M-3 | M-2 | M-3 |
| Compliance Ref. | CG, CE | CG | CG, CE | EN, CE | EN, CE | EN, CE |
| 32 Volt Model | PT-32-25W |
| Input VAC (50-60 Hz.) | 104-126 |
| Input Amps @ Full Load | |
| @ 115 VAC | 15 |
| @ 230 VAC | N/A |
| P.F. Rating | .7 |
| Max Output Amps | 25 |
| Output Banks | 3 |
| Battery Capacity (Amp-Hours) | 50-250 |
| Operating Temp. | T-6 |
| Case Size Ref. | A-4 |
| Weight; Lbs./Kg. | 12.2/6 |
| Optional Temp.Sensor Model | TP |
| Remote Panel Model | N/A |
| Equalize Option | No |
| Output Indicator Ref. | M-2 |
| Compliance Ref. | EN, CE |
| Inches | Centimeters | |||||
| Ref | H | W | D | H | W | D |
| A-1 | 10.5 | 5.0 | 2.8 | 26.7 | 12.7 | 7.1 |
| A-2 | 12.5 | 7.7 | 4.3 | 31.8 | 19.6 | 10.9 |
| A-3 | 13.85* | 9.5 | 4.8* | 35.2* | 24.1 | 12.2* |
| A-4 | 13.8A | 9.8 | 5A | 35A | 24.9 | 12.7A |
| A-5 | 14.8B | 9.6 | 5.6B | 37.6B | 24.4 | 14.2B |
| A-6 | 17.5C | 12 | 7.2C | 44.5C | 30.5 | 18.3C |
| * Add .75" (1.9 cm) to height and 1.35" (3.4 cm) to depth | ||||||
| T-1 | -10°C to +45°C; Derate linearly from 100% @ 0°C to 80% @ -10°C |
| T-2 | -10°C to +60°C; Derate linearly from 100% @ 40°C to 60% @ 60°C |
| T-3 | -10°C to +60°C; Derate linearly from 100% @ 50°C to 60% @ 60°C |
| T-4 | -10°C to +60°C; Derate linearly from 100% @ 40°C to 60% @ 60°C |
| T-5 | -40°C to +60°C; Derate linearly from 100% @ 50°C to 75% @ 60°C |
| T-6 | -20°C to +50°C; Full output |
| T-7 | -20°C to +70°C; Derate linearly from 100% @ 45°C to 50% @ 70°C |
| T-8 | -20°C to +70°C; Derate linearly from 100% @ 50°C to 50% @ 70°C |
| M-1 | Total output ammeter |
| M-2 | Charge/Float L.E.D. |
| M-3 | Total output ammeter and charger status L.E.D.'s/Alarms |
| | 12 Volt Models | 24 Volt Models | 32 Volt Model | |||
| Charge | Float | Charge | Float | Charge | Float | |
| Setting | @ 50% load | @ .5 amp load | @ 50% load | @ .5 amp load | @ 50% load | @ .5 amp load |
| Gel-Cell | 14.0 VDC | 13.6 VDC | 28.0 VDC | 27.2 VDC | 37.3 VDC | 36.2 VDC |
| Flooded/AGM | 14.2 VDC | 13.4 VDC | 28.4 VDC | 26.8 VDC | 37.8 VDC | 35.7 VDC |
Ships within 48 hours · Estimated delivery Jul 1 - Jul 6
US$40
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