Powering your 24V marine electrical system demands reliability, especially when you’re far from shore. The Newmar PT-24-60W steps in as a powerhouse 60A charger designed specifically for demanding marine environments. Drawing from 230V AC input, it delivers precise, three-stage “smart” charging to keep your gel-cell, flooded lead-acid, or AGM batteries in peak condition. Whether you’re running a live-aboard yacht, workboat, or recreational cruiser, this charger ensures fast recovery after heavy use, optimal conditioning, and longer battery life—without the guesswork.
Standout Features That Deliver Real-World Performance
Intelligent Three-Stage Charging: Automatically cycles through bulk (high-current recovery), absorption (full charge without overcharging), and float (maintenance mode) stages, adapting to your battery’s needs for maximum efficiency and lifespan.
Versatile Battery Compatibility: A simple selector switch lets you match settings for gel-cell, flooded lead-acid, or AGM types, dialing in the perfect charge and float voltages—like 28.0VDC charge / 27.2VDC float for gel-cell at 50% load.
Triple Isolated Outputs: Charge up to three separate battery banks independently, with a clear ammeter showing total output current so you always know what’s happening.
Heavy-Duty Build for Marine Life: Housed in a rugged stainless steel enclosure with white powder coat finish and polyurethane-coated internals, it laughs off salt spray, humidity, and corrosion. Rated for tough operating temps (T-6 reference: -20°C to +50°C full output).
Smart Protections: Current limiting guards against overloads, while clear LED indicators and optional alarms keep you informed. It even doubles as a power supply for loads without a battery connected.
High-Capacity Match: Ideal for 120-600 amp-hour battery banks, handling everything from house banks to thruster or inverter setups on larger vessels.
Backed by extensive safety and EMC compliances (EN, CE), this charger meets stringent marine standards, giving you peace of mind on the water.
How the Three-Stage Process Maximizes Your Batteries
Traditional chargers can undercharge or overheat batteries, leading to sulfation or early failure. The PT-24-60W’s “smart” circuitry monitors voltage and current in real-time:
Bulk Stage: Pushes maximum 60A output to quickly replenish deeply discharged batteries.
Absorption Stage: Tapers current while holding optimal voltage (e.g., 28.4VDC for flooded/AGM) to fully saturate without gassing.
Float Stage: Drops to a safe maintenance voltage (e.g., 26.8VDC for flooded/AGM) to counteract natural self-discharge, ready for immediate use.
Add the optional TP temperature sensor, and it fine-tunes output based on ambient conditions—crucial in engine rooms where heat builds up. Skip equalization on this model, keeping things simple for sealed batteries.
Key Specifications at a Glance
Specification
Details
Input Voltage
207-253 VAC (50-60 Hz)
Max Output Current
60A DC at 24V
Output Banks
3 isolated
Battery Capacity
120-600 Ah
Input Amps @ 230 VAC
13A full load
Power Factor
0.7
Dimensions (A-6 Case, approx.)
17.5″ H x 12″ W x 7.2″ D (add allowances for terminals)
Weight
24.1 lbs (11 kg)
Output Indicators
M-2: Charge/Float LEDs
Compact yet robust (A-6 case size), it fits snugly in tight bilge spaces or electrical panels.
Perfect for Marine Pros and Enthusiasts
Boat owners swear by this charger for its no-fuss reliability. On a 50-foot trawler, it revives twin 24V house banks after a weekend of anchor lights and fridge duty. Commercial operators appreciate the multi-bank isolation—charge start, house, and electronics batteries separately without cross-talk. Pair it with solar or generator inputs for hybrid setups, and you’ve got a system that stays online through rough seas or long passages.
Installation is straightforward: hardwire to shore power or a generator, connect to batteries with adequate cabling (consult ampacity charts for 60A runs), and select your battery type. Mount vertically for best convection cooling.
Frequently Asked Questions
What battery types does the Newmar PT-24-60W support?
It works with gel-cell, flooded lead-acid, and AGM batteries via a built-in selector switch that sets optimal charge (28.0-28.4VDC) and float (26.8-27.2VDC) voltages.
