The Sailing Mode is an addition to the Charge Limiter. While the charging of the MacBook is paused, i.e. the charge level is exactly at the set charge limit, the power supply is primarily used as a power source. However, small discharges of the battery still occur when a lot of power is needed for a short time. Then the battery of the MacBook steps in as a buffer. If the charge level drops below the charge limit due to these short discharges, AlDente recharges the battery to the desired charge limit. A second effect on why the battery loses charge is time. If a battery is left for weeks without charging or discharging, it will also lose charge over time. Also in this case, AlDente would detect that the charge level has dropped below the charge limit and would recharge the battery to the selected charge limit. Since it is theoretically healthier for the battery to be charged 10% once instead of 1% 10 times, we have included the Sailing Mode feature. This allows you to set a lower limit, from which the battery will be charged up to the charge limit again. Depending on the settings and usage, it can take weeks or months until this lower limit is reached.
Which interval should I choose for my battery to last as long as possible?
Unfortunately, we could not find any explicit studies on this topic yet. Therefore, we assume a value of 5-10%, depending on your own judgment.
The current charge level of the MacBook is 80% and the MacBook is plugged in and charging is paused because the charge limit on AlDente Pro is set to 80%. Sailing Mode is activated and an interval of 5% is set.The MacBook will not charge again until the lower limit of the interval, 75%, is reached.
The current charge level of the MacBook is 57 percent and the MacBook is plugged in and charging. AlDente is started and the charge limit is set to 60% and the Sailing Mode is activated and the interval is set to 10%. The MacBook continues charging until the charge limit of 60% is reached, because the Sailing Mode is always started from the upper limit of the interval first. Afterwards, the charging of the MacBook is stopped and the MacBook remains at 60% charge level and only charges again when the lower interval limit of 50% has been reached.
Help, Sailing Mode doesn’t work on my MacBook!?
In short: The Sailing Mode most likely works on your MacBook. Fortunately, modern power supplies are really good in handling power spikes of the MacBook. Therefore, the battery doesn’t need to buffer these power spikes most of the time. Furthermore, every time the MacBook gets unplugged or turned off, the Sailing Mode will be reset and starts again from the Charge Limit. If you really want to test the Sailing Mode, you can use an underpowered power supply for your MacBook and run a benchmark. You will see the charge level sail to the lower limit of the charging range and when the lower limit is reached, the battery will get charged again.