Marine generator replacement
Cool, quiet nights at anchor. No generator.
A lithium power system sized to run your boat's A/C through the night, installed where your generator used to be.
Hundreds of conversions. Zero generators.
From the team behind Aetherion's battery conversionsSee it run
Step aboard the showpiece unit.
It visits North Texas marinas. Turn on the A/C and listen for the generator that is not there.
The night log
8 to 14 hours of A/C. Generator hours: zero.
One A/C on four 48 V batteries, sunset to sunrise, on one charge.
The install
Installed where your generator used to be.
Battery bank and inverter fit the generator bay. No new hatch, no lost locker.
01 / 03
Take a look at the difference
Fits the generator space.
Learn more about the footprint
Shore power. Full in about 7 h at the slip.
Engines. Charging while you cruise.
Solar. Optional panels topping up by day.
Sized for every cruiser on the lake
From a 28 ft express cruiser on Grapevine to a 45 ft flybridge on Texoma. Each system is sized to the boat, not picked off a shelf.
The generator you live with
It keeps the A/C on. It also keeps you up.
- Noise
- It carries across the anchorage.
- Fumes
- On a muggy night, exhaust settles over the swim platform.
- The CO alarm
- It should stay on. It should not be what wakes you.
- The quote
- $10,000 to $20,000+ to replace a tired genset, installed.
The night log
One night at anchor. Logged.
Sunset to sunrise on one charge. 8 to 14 hours of A/C on a four-battery bank. Generator hours: zero.
Battery[X]%
Generator0hrs
21:0023:0001:0003:0005:0007:00
Cabin tempBatteryGeneratorCurves illustrative. Values pending spec sheet.
Built to standard
What goes in your boat. In writing.
- Chemistry
- LiFePO4, lithium iron phosphate.
- BMS
- A battery management system watches every cell.
- Install
- ABYC E-13, the standard for lithium on boats.
- Insurer
- Wiring diagram, components, sign-off.
Generator vs True Current
Same cool cabin. Different night.
One 10-hour night at anchor. Generator figures are industry averages for a typical 8 kW marine diesel. True Current figures are for one A/C on four 48 V batteries.
MeasureGeneratorTrue Current
Fuel4 to 7 gal0 gal
Engine hours10 h added0 h
ServiceOil every 100 to 250 hNo oil, filters, or impeller
Noise63 to 72 dB at 7 ftNo engine running
FumesExhaust and CONone
Hours of A/CAs long as fuel lasts8 to 14 h per charge
Replacement$10,000 to $20,000+Fixed quote after sizing
Sources: manufacturer spec sheets and dealer listings, 2026. True Current run time from our own installs.
See it run
Our showpiece unit visits North Texas marinas. Step aboard, turn on the A/C, and listen for the generator that is not there.
[Marina name]
Step aboard[Marina name]
Step aboard[Marina name]
Step aboard[Marina name]
Step aboardFrom owners
Life after the generator
[Owner review pending. Pulled from Aetherion customer reviews that mention the generator.]
[Owner review pending.]
[Owner review pending.]
How it works
- 01
Consultation
We talk about your boat, your A/C, and how you use it at anchor.
- 02
Sizing
We size the bank and inverter to your load. You see the numbers before you commit.
- 03
Install
We install it where the generator was. About [X] days, at your marina.
- 04
Documented hand-off
Wiring diagram, spec sheet, and the paperwork your insurer asks for.
Questions
What owners ask first
Yes, when the bank is sized to your unit. A 16,000 BTU marine unit draws about 11 amps at 120 V once it is running, with a short surge at start. We size for that load plus a margin, then show you the math.
With one A/C on a four-battery bank, 8 to 14 hours. Set it to medium on a cooler night and it runs longer. Need more? We add batteries. You get your number in writing.
In most 28 to 45 ft cruisers, yes. We measure your space at the consultation.
We use LiFePO4, a stable lithium chemistry. A battery management system watches every cell. Every install follows ABYC E-13, and you get the paperwork.
We are based in McKinney and install at marinas on Lake Lewisville, Grapevine Lake, and Lake Texoma. [Other lakes pending.]
By consultation only
Spend the next hot night at anchor without the generator.
Grand opening5% off your install when you book a consultation this winter.
Book a power consultationOr call 203-885-5594