Bypass charging

Framework Laptop 13
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Hi there :slight_smile:

Does the device support bypass charging?

So can I use it, without the battery being used?

Asus supports this on his new ROG Ally

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Yes! The BIOS has an option to logically disconnect the battery, and it will only work when plugged into a charger when that’s on. It does require a reboot to access though.

EDIT: I’m kind of curious what this feature will look like with the Framework 16 because they’ve stated that their new 180W can’t supply all the power it needs at full load. Either it’ll be disabled or they’ll leave it in and let people cause power issues unless they use bypass with a 240W adapter.

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That depends on configuration. If you do not add a mobile GPU or other power hungry add on, 180W will be way over what the laptop consumes. Even with a mobile GPU it will depend on which model or what power plan is set up. So basically it is not really an issue.

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Exactly… i’m planning on using an extra battery in the GPU extention bay. I want extra battery life, the Ryzen APU is enough graphics power for my work as a programmer.

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I guess we could limit our power consumption in direct power supply mode.

There is no problem telling the system to consume 170 Watt and not more.
Probably should we limit it more to 140, if we want to preserve the health and efficiency of our power supplies.

Or we simply get a 240 Watt adapter. :man_shrugging:

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Framework Laptop 13 can draw more than the included 60W at full load. It just slightly throttles back to a maximum of 60W. No power issues and its not really enough to be noticed.

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The RX 7600M has a TDP range from 50 to 90 Watt

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Sorry for reviving this old post, but is that not only for opening the internals? Or is it removed alltogether.

I recently purchased my 7040 13 and am wondering on how I can make it preserve the battery capacity.

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You’re right, the “disconnect battery” option is only for turning the laptop completely off and working on the internal without any chance of battery power on the components, without physically disconnecting the battery as the first step.

The power/charging topology can be a bit complicated, and I think framework does not support “bypassing” the battery completely, though the situation is different between 13 inch and 16 inch models.

The best way to preserve your battery is to set a battery charge limit of perhaps 80%, in the bios. Recent firmware versions will let it slowly drain to 5% lower than your limit, before starting to charge it again to your limit. This battery drain happens when the cpu+gpu use a very brief spike of power above what the charger can supply (well, above what the laptop is willing to take from the charger, given a margin of safety/compatibility). Overall it works pretty well for battery health. I have mine set to 85% (so it’ll stay between 85% and 80%) but some who want to try harder to preserve the battery set it at 70% or so (or even 60%! … but I wouldn’t go that far, it’s not helpful).

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If that is the case we are dealing with then my 75% limit should be good.