Newmar PT-24-45U 24v 45 Amp Charger 115/230V Input
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Newmar PT-24-45U 24v 45 Amp Charger 115/230V Input Product Description
Power Up Your 24V Systems with Reliable, Smart Charging
Imagine heading out on a long offshore trip or powering through a demanding workday on the water, only to worry about dead batteries slowing you down. The Newmar PT-24-45U eliminates that stress. This powerhouse 24V, 45-amp charger delivers precise, efficient power to keep your house banks, thrusters, or inverters humming, even in the harshest marine conditions. Designed for boaters, commercial operators, and anyone running serious 24V setups, it adapts seamlessly to gel, flooded, or AGM batteries, ensuring peak performance every time.
What sets it apart? Its "Phase Three" smart technology mimics a pro mechanic's touch—pushing fast bulk charge when depleted, gentle absorption to top off without gassing, and a maintenance float to preserve life. No more overcharging worries or sulfation buildup. Users rave about how it cuts recharge times on big battery arrays, often halving downtime compared to basic chargers.
Key Features That Stand Out in Real-World Use
- Three Independent Banks: Charge up to three battery banks simultaneously without cross-talk, perfect for dual house banks plus a starter.
- Fully Universal Input (90-264V AC): Plug into shore power worldwide—115V, 230V, 50/60Hz—no switches or adapters needed. Draws just 12A at 115V full load.
- Battery Versatility: Simple selector switch optimizes for gel-cell (28.0V charge/27.2V float), flooded/AGM (28.4V/26.8V), handling 90-450 amp-hour banks effortlessly.
- Power Supply Mode: Run DC loads directly without batteries—ideal for troubleshooting or light-duty setups.
- Overload Protection: Current limiting kicks in to safeguard against shorts or excessive draws.
- Clear Monitoring: Built-in ammeter tracks total output, plus LED status lights for charge stage and faults. Optional remote panel or temp sensor for pro installs.
Compact at 14.8 x 9.6 x 5.6 inches and 12.2 lbs, it slots into tight engine rooms without dominating space.
Built Marine-Tough for Longevity
Corrosion is the silent killer of marine electronics, but not here. The rugged stainless steel chassis with white powder coat finish shrugs off salt spray, while polyurethane-coated internals laugh at humidity and fumes. An optional drip shield adds extra defense against condensation. Rated for -20°C to +70°C operation (derating above 50°C), it's ready for engine bays or open decks.
Backed by rigorous compliances like USCG ignition protection and CE marking, it meets pro standards for safety and EMC. In user stories from fishing charters to luxury yachts, this charger outlasts competitors in brutal conditions, often running flawlessly for years with minimal maintenance.
Master the Three-Stage Process for Battery Health
Smart charging isn't hype—it's science. Here's how it works:
- Bulk Stage: High-amp delivery (up to 45A total) restores 70-80% capacity fast, like jump-starting recovery after heavy use.
- Absorption Stage: Voltage holds steady while amps taper, fully saturating cells without excess heat or water loss.
- Float Stage: Trickle maintains full charge indefinitely, countering self-discharge without overstress.
Result? Batteries last 2-3x longer, with cranking amps staying strong. Pair with the optional TCS-12/24 temp sensor, and it auto-adjusts for cold winters (higher voltage) or hot engine rooms (lower to prevent gassing).
Perfect Fit for Marine and Beyond
From workboats juggling winches and radios to live-aboards powering fridges and AC, this charger's 45A punch handles it. It's a go-to for 24V systems in trollers, ferries, or even off-grid RVs needing shore power conversion. Skip the guesswork—its equalize mode (for flooded batteries) desulfates during maintenance cycles, reviving tired packs.
Installation is straightforward: AC input via standard cord, heavy-duty DC outputs for each bank. Mount vertically or horizontally, ensure good airflow, and you're set. Pro tip: Wire with 6-8 AWG for minimal voltage drop on long runs.
Frequently Asked Questions
What battery types does the Newmar PT-24-45U support?
It works with gel-cell, flooded lead-acid, and AGM batteries via a simple selector switch, optimizing charge and float voltages for each.
Can this charger power my DC loads without batteries?
Yes, it doubles as a power supply in float mode, delivering stable 24V DC directly to loads like lights or pumps.
Is the PT-24-45U suitable for marine environments?
Absolutely—stainless steel construction, polyurethane-coated boards, and USCG ignition protection make it ideal for boats, with drip shield options for extra moisture resistance.
What's the input voltage range for worldwide use?
Universal 90-264V AC, 50/60Hz input handles everything from US 115V to European 230V outlets seamlessly.
How many banks can it charge at once?
Three isolated banks, distributing the 45A output across them for balanced charging of separate battery groups.
Does it have temperature compensation?
Optional TCS-12/24 sensor adjusts output voltage based on battery temp, preventing under- or over-charging in varying climates.
What size batteries is it rated for?
Optimized for 90-450 amp-hour 24V banks, like those in mid-size yachts or commercial vessels.
45 Amp Phase Three Series Battery Charger, 24 VDCThe "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.
NewMar PT2445U Attributes
- Number Of Banks: 3
- Application: AGM/ Flooded/ Gel Batteries
- Output Voltage: 24 Volt
- Input Voltage: 90 To 264 Volt
- Ampere Rating: 45 Amp Charging
- Universality: Fully Universal
- Length (IN): 14.8 Inch
- Width (IN): 9.6 Inch
- Height (IN): 5.6 Inch
NewMar PT2445U Features & Benefits
- Smart circuitry provides three stage charging--bulk, absorption, float.
- Multiple isolated output banks; ammeter indicates total output current.
- Optional sensor adjusts output voltage based on battery temperature.
- Current limiting-prevents damage from overloading.
- Charger status clearly displayed with L.E.D., ammeter, or remote panel
- Use as a power supply; can power loads without a battery in line.
- Optional drip shield and marinized internal circuitry.
- Numerous Safety and EMC Compliances
- Two year parts and labor warranty
Three Stage "Smart" Chargers
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
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"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.
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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 |
Case Size
| 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 | ||||||
Temperature Rating References:
| 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 |
Output Indicator References
| 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 |
Compliance References*
See matrix for applicable models
CG USCG CFR 183.410 (Ignition protected)
EN EN 60335-1, EN 60335-2-29
CE Carries the CE Mark
* Numerous other Safety and EMC compliances may also apply. Contact factory if further compliance
information is required.
Nominal Output Voltages at Gel/Flooded Switch Settings
(Without Temperature Compensation option installed or at 22.2˚C (72˚F) with Temperature
Compensation option installed.)
| | 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 |
Three-stage "smart" charger stage Now, the "three" "smart" battery charging technology is suitable for various power levels, allowing you to choose the right size, function and flexibility...
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Who is the NewMar?How to describe Newmar PT-24-45U 24v 45 Amp Charger 115/230V Input?
Who is the NewMar?
How to describe Newmar PT-24-45U 24v 45 Amp Charger 115/230V Input?
- The latest in battery charging technology
- Customize your charger to suit your needs
- Fast, efficient, and reliable
- Phase Three "Smart" battery charging technology
- Wide range of power levels
- Select the right size, features, and flexibility
The Newmar PT-24-45U 24v 45 is the most advanced battery charger on the market today. It features three stage battery charging technology, which ensures that your battery is always charged to 100% capacity. The Newmar PT-24-45U 24v 45 also has a built-in 4 amp engine start for emergency starting of your vehicle. If you're looking for a battery charger that offers the best in performance,
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Newmar PT-24-45U 24v 45 Amp Charger 115/230V Input Technical Specifications
| Type: | |
|---|---|
| Vendor: |
NewMar |
| Weight: |
23.0 lb |
Newmar PT-24-45U 24v 45 Amp Charger 115/230V Input User Reviews
Newmar PT-24-45U 24v 45 Amp Charger 115/230V Input Shipping & Return
| Shipping Weight: |
23.0 lb |
|---|---|
| Box Sizes: |
1.00 (h) x 1.00 (w) x 1.00 (l) |
| Cubic Feet: |
1.0 |
| Returnable: |
Yes |
| USPS First Class: |
Yes |
| P65: |
Yes |
| Truck Delivery: |
Yes |
For detailed shipping policy please check our Shipping Policy and you can find our Return and Refund Policy here.