A modified sine wave inverter should work. It will be less efficient, on the order of twice or more the power loss of a DC-DC converter. It will also be harder on your AC power brick, which is likely to run hotter, whether or not this will cause it to die earlier, who knows.
If you use your laptop a lot (like a navigation computer) it might be worth sourcing a DC-DC converter for it. We've used boost DC-DC converters for years to power our 20V laptops from 12V batteries. They seem happier if they are somewhat oversized. I've used cheap ($5-$10) 150W converter for our 90W laptops. In an aluminum enclosure with external heatsinks, they have lasted for years, but run warm to the touch. We have a newer commercial model, but haven't used it enough to know how long it will last. We also have a very beefy model for running a 3D printer (I have a teen and preteen son, as well as never fully grown up myself :-)
I've never tried this with a Mac. Apparently their Mag connectors have an extra wire to see if the power supply is "valid". With a 24V battery, you would also need a Buck Converter rather than a Boost Converter. I think a fair number of commercial trucks use 24V, there must be some kind of Mac solution for long-haul truckers.
I did some back-of-the-envelope calcs. Using an inverter vs a DC-DC converter, you will probably see about 0.4Ah additional power consumption per hour of laptop use from your 24V house bank. Not enough to worry about if you have a single user and limited laptop use.
A modified sine wave inverter should work. It will be less efficient, on the order of twice or more the power loss of a DC-DC converter. It will also be harder on your AC power brick, which is likely to run hotter, whether or not this will cause it to die earlier, who knows.
If you use your laptop a lot (like a navigation computer) it might be worth sourcing a DC-DC converter for it. We've used boost DC-DC converters for years to power our 20V laptops from 12V batteries. They seem happier if they are somewhat oversized. I've used super-cheap ($5-$10) 150W converter for our 90W laptops. In an aluminum enclosure with external heatsinks, they have lasted for years, but run warm to the touch. We have a newer commercial model, but haven't used it enough to know how long it will last. We also have a very beefy model for running a 3D printer (I have a teen and preteen son, as well as never fully grown up myself :-)
I've never tried this with a Mac. Apparently their Mag connectors have an extra wire to see if the power supply is "valid". With a 24V battery, you would also need a Buck Converter rather than a Boost Converter. I think a fair number of commercial trucks use 24V, there must be some kind of Mac solution for long-haul truckers.
I did some back-of-the-envelope calcs. Using an inverter vs a DC-DC converter, you will probably see about 0.4Ah additional power consumption per hour of laptop use from your 24V house bank. Not enough to worry about if you have a single user and limited laptop use.