Smart 36V 13A Waterproof LiFePO4 Charger (12V to 43.8V Boost)
- Topology: DC-DC Step-Up Boost
- Input / Output: 9–35V DC → 43.8V DC
- Charging Current: 13A Continuous CC/CV
- Target Systems: 36V Trolling & Propulsion
Commercial & Recreational Marine Lineup
Engineered Marine Battery Chargers & Converters for Philadelphia Vessels
Precision-calibrated CC/CV charging curves for LiFePO4, AGM, and Gel chemistries. Built to resist brackish Delaware Bay salt fog, freeze-thaw thermal stress, and marina AC grid sags.
1000W IP65 Universal AC-DC LiFePO4 Marine Shore Charger
- Input Voltage: 90–265V AC (47–63Hz)
- Output Voltage: 14.6V / 29.2V / 58.4V
- Thermal Design: Fully Potted Heat Sink
- Protection: Short Circuit, OVP, OTP
600W Waterproof Multi-Bank LiFePO4 Onboard Charger
- System Config: 12V / 24V / 36V / 48V
- Peak Efficiency: ≥ 94% Sync Rectifier
- Waterproof Rating: IP65 Anodized Alloy
- Compliance: CE, RoHS, ISO 9001
400W Battery-to-Battery DC-DC Marine Alternator Charger
- DC Input Window: 10–36V Wide Input
- Output Regulation: 14.6V / 29.2V / 43.8V
- Alternator Safe: Integrated Current Limiting
- Applications: House Bank Isolation
300W Compact Marine Lithium Onboard Charger
- AC Mains Input: 100–240V AC US Standard
- Output Channels: 14.6V / 29.2V Stable CC/CV
- Enclosure: Anti-Corrosive Marine Resin
- Connector Options: Anderson / M8 Ring / US 3P
1500W Programmable Buck-Boost Marine Stabilizer
- Input Flexibility: 10–60V Ultra-Wide DC
- Output Settings: 12V, 24V, 28V, 48V Stable
- Communication: RS485 Modbus Telemetry
- Max Continuous: Up to 60A Current Output
18–90V to 12V 10A Galvanic Isolated Marine DC Converter
- Ground Isolation: Transformer Decoupled
- Surge Voltage: 1500V DC Dielectric Rating
- Ground Loop Cure: Sonar / Radar / Radio Safe
- Waterproofing: IP68 Hermetic Potting
48V to 12V 60A Step-Down High-Current Marine Bus Regulator
- Input Compatibility: 30–60V DC (48V LFP Pack)
- Regulated Output: 12V (or 13.8V Float) @ 60A
- Total Rated Power: 720W Continuous Delivery
- Conversion Loss: Ultra-Low < 5% Thermal Diss.
Engineering White Paper Depth
Navigating the Delaware Basin: Critical Engineering Standards for Marine Power Infrastructure
The maritime corridor encompassing the Port of Philadelphia (PhilaPort), the tidal Delaware River, the Schuylkill navigation cuts, and down into the brackish waters of Delaware Bay presents a grueling operational crucible for marine electrical distribution systems. Vessels navigating between freshwater river moorings at Penn's Landing and saline maritime routes off Cape May encounter severe environmental factors: rapid galvanic potential swings, ambient dockside humidity exceeding 90%, summer engine-room ambient temperatures topping 55°C (131°F), and severe winter freeze cycles.
Shenzhen Eltrum Electronic Co., Ltd. engineers and exports marine battery chargers, DC-DC alternator charging regulators, and galvanic isolators that solve these precise engineering constraints. Rather than relying on commercial consumer electronics retrofitted with silicone spray, Eltrum supplies true maritime-grade converters manufactured under ISO 9001 quality systems, featuring solid vacuum epoxy potting, military-spec thermal interfaces, and harmonic-free multi-stage charge controllers that comply rigorously with American Boat and Yacht Council (ABYC) E-11 standards.
- Complete Hermetic Sealing: IP67/IP68 ingress protection keeps salt mist, sulfur exhaust soot, and bilge condensates completely isolated from high-voltage planar transformers.
- Galvanic Isolation Topology: 1500V DC input-to-output dielectric isolation prevents dangerous ground loops between dockside AC green-wire grounding and underwater metal running gear (propellers, shafts, and rudders).
- BMS-Integrated Synchronous Rectification: Multi-chemistry charging curves (14.6V, 29.2V, 43.8V, 58.4V) optimized for LiFePO4 cells to prevent premature high-voltage cutoff disconnects.
Philadelphia Metropolitan Waterways
Localized Marine Application Scenarios across the Delaware Valley
From commercial cargo handling along the PhilaPort terminals to rowing club launches on Boathouse Row, maritime operations require power conversion hardware tuned to specific duty cycles.
Commercial Tugs & Barges (PhilaPort & Marcus Hook)
Continuous heavy-duty tugboats maneuvering oil barges and container ships along the Delaware River require uninterrupted 24V and 12V auxiliary DC control buses. Our 1000W IP65 chargers and heavy-current buck converters (24V to 12V up to 100A) maintain bridge electronics, VHF transceivers, and AIS navigation units without thermal trip-outs, even during 24/7 turnaround cycles in dense diesel engine rooms.
Recreational Cruisers & Yachts (Penn's Landing to Essington)
Marinas like Philadelphia Marine Center and Corinthian Yacht Club host yachts transitioning from older AGM battery banks to high-energy LiFePO4 house systems. Eltrum's 400W–1500W battery-to-battery (DC-DC) chargers allow high-output marine alternators to fully recharge 12V/24V house lithium banks without scorching stator coils or tripping internal engine regulators.
Electric Patrol, Survey & Rowing Skiffs (Schuylkill River)
Low-wake environmental monitoring crafts operated by regional authorities, alongside rowing coaching launches around Boathouse Row, are rapidly adopting zero-emission electric outboards. Our smart 36V 13A boost chargers and 48V DC regulators deliver high-speed, silent recharge turnaround from trailer auxiliary batteries or portable generators.
Seasonal Winterization & Cold-Snap Preservation
Pennsylvania winters routinely freeze the freshwater sections of the upper Delaware. Lead-acid batteries self-discharge and freeze, cracking cases, while lithium banks require precise temperature monitoring to prevent sub-zero charging damage. Eltrum marine chargers provide cold-temperature low-current standby maintenance, preserving multi-thousand-dollar battery assets across 5-month storage periods.
Commercial Sportfishing & Charter Fleets (Delaware Bay Transit)
Charter sportfishermen operating out of Delaware River tributaries and heading into Delaware Bay run extensive 36V bow trolling motors, 12V downriggers, radar displays, and refrigeration banks. Eltrum multi-bank waterproof chargers allow vessels to fully recover stored ampere-hours overnight from erratic dockside shore power lines without tripping shore GFCIs.
Strategic Maritime Electrification
Regional Technology Trends Transforming Greater Philadelphia Marine Systems
Engineering shifts driven by state clean energy mandates, battery chemistry evolution, and smart telemetry across the Mid-Atlantic seaboard.
The Shift from Lead-Acid to 48V LFP Mainstay Banks
Yacht builders, refit yards, and commercial tug operators in the Philadelphia-Camden port complex are aggressively retiring heavy flooded lead-acid and AGM battery banks in favor of Lithium Iron Phosphate (LiFePO4). With triple the usable depth of discharge (DoD) and a 70% weight reduction, LFP banks demand intelligent chargers capable of delivering true constant current up to 99% state-of-charge without voltage overshoot.
Mitigation of Shore Power Voltage Sag at Historical Piers
Many heritage marinas along the Delaware River suffer from severe AC voltage drops during peak summer months when vessel air conditioning systems overload dock substations. When input AC drops to 95V AC, standard battery chargers burn out or shut down. Eltrum's 90–265V wide-input PFC front-end architecture ensures full rated wattage output even when shore pedestals experience severe voltage sag.
Digital Bus Integration via RS485 & CAN-Bus Telemetry
Modern vessel refitters demand bidirectional communication between the vessel master display, battery management systems (BMS), and power conversion hardware. Eltrum's WG-12C800M and 1500W converter series incorporate RS485 / Modbus protocols, allowing real-time monitoring of charging current, heat-sink thermals, and fault registers directly on vessel digital switching consoles.
Global Manufacturing Excellence
Why Philadelphia Marine Distributors & OEMs Choose Shenzhen Eltrum Electronic
Founded in 2015, Shenzhen Eltrum Electronic Co., Ltd. is a dedicated manufacturer of high-efficiency DC-DC converters, AC-DC smart battery chargers, and custom power switching modules. Operating from our 3,000 m² ISO 9001 certified manufacturing plant in Shenzhen, we oversee every engineering phase—from high-frequency magnetic winding and surface-mount technology (SMT) assembly to automated vacuum silicone potting and full-load burn-in screening.
While standard consumer chargers fail within months when exposed to salty river moisture, Eltrum units are engineered for marine longevity. Our products are exported to over 130 countries worldwide, with a strong footprint across East Coast maritime hubs in the United States, Europe, and Australia.
- Direct OEM / ODM Customization: Custom CC/CV charging thresholds, tailored RS485 firmware protocols, proprietary buyer branding, and customized input/output marine harnesses.
- Rigorous Testing: 100% full-load thermal burn-in, vibration stress testing, and high-voltage dielectric insulation verification prior to dispatch.
- Flexible Minimum Order Quantity: Rapid prototyping from 5 units for OEM validation, with scalable container-level production capacity.
System Design Reference
Marine Conversion Matrix: Selecting Topology for Onboard Power
Prevent electrical bus brown-outs, alternator diode failure, and ground current electrolytic degradation by selecting the right circuit topology.
Buck (Step-Down)
Condition: Vin consistently higher than Vout.
Marine Use: Stepping down 24V or 48V main propulsion or house battery banks down to clean 12V or 13.8V for bilge pumps, chartplotters, and LED navigation arrays.
Boost (Step-Up)
Condition: Vin consistently lower than Vout.
Marine Use: Charging high-voltage 24V, 36V, or 48V electric trolling motors and bow thruster banks directly from the standard 12V engine alternator bus during transit.
Buck-Boost
Condition: Vin fluctuates above and below Vout.
Marine Use: Stabilizing a true 12.0V or 24.0V bus for delicate radar and sonar gear while lead-acid or LFP battery banks swing from 10.5V (cranking sag) to 14.6V (bulk charging).
Galvanic Isolated
Condition: DC input and output grounds must be isolated.
Marine Use: Eliminates dangerous ground loops that corrode through-hull fittings and drive running gear, while preventing electrical noise from corrupting fishfinders.
Local Purchasing FAQs
Frequently Asked Questions by Philadelphia Marine Engineers & Buyers
Everything procurement officers, shipyard electrical superintendents, and marine distributors need to know about specifications, certifications, and delivery.
Why is galvanic isolation critical for boats moored along the Delaware River and Penn's Landing?
The Delaware River contains varying salinity gradients, industrial runoff, and metal structures like steel sheet pile bulkheads. When boats plug into dockside shore power without isolated charging equipment, minute DC potential differentials travel down the green grounding wire. This turns underwater bronze through-hulls, trim tabs, and stainless steel propeller shafts into sacrificial anodes, resulting in severe galvanic pitting within months. Eltrum's isolated marine converters provide 1500V electrical isolation, completely breaking the DC conductive bridge to dockside earth.
How do Eltrum LiFePO4 battery chargers handle freezing Philadelphia winter temperatures?
Charging standard Lithium Iron Phosphate (LiFePO4) cells below 0°C (32°F) causes permanent lithium metal plating on the graphite anode, inducing short circuits and catastrophic cell degradation. Eltrum marine chargers can be customized with temperature sensor inputs that interface with onboard BMS units to inhibit bulk charging or switch to a safe pre-heating low-milliamp conditioning profile when ambient temperatures plunge during Mid-Atlantic winter freeze cycles.
Can these chargers withstand engine room heat in commercial Delaware River tugboats?
Yes. Our industrial-grade AC-DC and DC-DC converters are fully potted in thermally conductive epoxy resin housed within extruded aircraft-grade aluminum heat sinks. They operate at full rated power up to 50°C ambient and feature automated linear thermal derating curves rather than sudden shutoffs, ensuring critical navigation electronics and bilge pump battery banks receive continuous current even during high-load summer runs.
What are the shipping times, incoterms, and MOQ requirements for Philadelphia businesses?
We maintain low Minimum Order Quantities (starting from 5 units for standard chargers and 1–2 units for high-power 1500W modules) to allow naval engineers and boatyards to thoroughly test samples. We export under FOB Shenzhen, CIF Philadelphia, or EXW terms, with air freight sample delivery taking 4–7 business days to Philadelphia International Airport (PHL) and consolidated ocean freight arriving through East Coast ports in 22–28 days.
Are Eltrum products compliant with ABYC E-11, CE, and RoHS standards?
All our manufacturing lines operate under ISO 9001 certified quality management protocols. Our converter and charger series comply with CE and RoHS directives. Furthermore, their electrical isolation, ignition-protected potting, reverse polarity suppression, and over-current trip limits are designed to satisfy ABYC E-11 (AC and DC Electrical Systems on Boats) guidelines when installed by certified marine technicians.
Can Eltrum tailor custom charging profiles for specialized marine lithium battery brands?
Yes. Because we design our own microcode and control loops in Shenzhen, our engineering team regularly programs custom bulk, absorption, and float voltages (e.g., 14.4V vs 14.6V for LiFePO4, or 16.8V for NMC ternary packs), tailored dead-band recovery voltages, and RS485 Modbus registers to match the specific BMS requirements of private-label marine battery manufacturers.