The Newmar PT-14W is a Phase Three series battery charger for 12-volt systems on workboats, commercial and military vessels and recreational craft. It delivers up to 14 A across 3 output banks, isolated so each battery charges independently, with an ammeter showing total output current. It is a standalone charger, not an inverter.

Smart circuitry runs a three-stage charge of bulk, absorption and float, and a selector switch sets the output for gel-cell, flooded lead-acid or AGM batteries. An optional TCS-12/24 sensor adjusts the voltage to battery temperature, and the optional RP remote panel shows the charge stage and lets you restart the charge cycle. Newmar recommends a battery capacity of 28–140 Ah.

The AC input accepts 85–264 VAC, 50–60 Hz, so the charger runs on 115 V or 230 V shore power. A stainless steel case with a white powder coat, polyurethane-coated circuitry, current limiting, thermal protection and forced-air cooling suit marine conditions, and an optional drip shield is available. The charger can also act as a regulated DC power supply.

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Choose the Right Battery Charger for Your System

The Newmar PT-14W is an installed 12 V marine charger. Check these six points before you buy.

Battery Charger, Inverter or Combined Unit?

A battery charger only recharges batteries from shore or generator power. An inverter/charger adds AC output from the battery and an automatic transfer switch. The Phase Three series is a dedicated marine charger for systems that already have an inverter or do not need one.

Compare the PT-7 (7 A) for other 12 V output levels in this collection.

Find the Right Power Equipment

Use these collections to compare inverter/chargers, inverters and other RV and marine equipment. A collection link is for browsing and does not confirm compatibility.

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Frequently Asked Questions

Is the Newmar PT-14W an inverter?
No. It is a battery charger only. Our catalog data lists inverter fields for this item, but it does not produce AC power.
How many batteries can it charge?
It has 3 output banks, sharing a total of 14 A.
Which battery types does it support?
Gel-cell, flooded lead-acid and AGM, selected with a switch.
What AC input does it accept?
85–264 VAC, 50–60 Hz, according to the Newmar specifications on our store listing.
Is a temperature sensor available?
Yes. The TCS-12/24 sensor is optional.
Is a remote panel available?
Yes. The RP remote panel with 25 ft cable is optional.
What battery capacity suits it?
Newmar recommends 28–140 Ah.
Can it run loads without a battery?
Yes. Newmar states it can act as a regulated power supply.

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