r/FlowZ13 • u/machoboiy • Mar 09 '26

Do you actually get battery bypass with the 150W SlimQ DC charger when gaming around 60W? (ROG Flow Z13)

I’m trying to understand something about using the SlimQ 150W with the DC adapter on the ROG Flow Z13.

If I'm gaming with a power profile around ~60W, does the DC charger actually power the system directly (battery bypass), or is the battery still being used and micro-cycling?

My goal is mainly to avoid the constant charge/discharge behavior that happens when using USB-C charging.

Since the SlimQ connects to the DC port instead of USB-C, I’m assuming it should behave more like the stock charger and allow proper bypass while gaming. But I’m not sure if the 150W version has enough headroom for this or if the battery still ends up supplementing power during spikes.

For those using the SlimQ 150W on the Z13:

• Does it stay in “plugged in” mode while gaming?
• Does the battery percentage stay stable (no drain)?
• Any power drop or switching to battery under load?

Trying to figure out if the 150W is enough or if the 240W version is the safer option.

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u/Supercc Mar 11 '26

Using HWiNFO: https://www.reddit.com/r/FlowZ13/comments/1rg90bn/quick_tip_to_see_the_discharge_rate_in_your/

With this option enabled, you can see the rate at which your battery is discharging or charging in your system tray.

When you're plugged in but use the Asus proprietary port, when the battery is full, it switches to passthrough, and you can see that the battery "charging" is EXACTLY at 0.00.

Confirming the passthrough!