this post was submitted on 13 Nov 2023
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Discussion around the Framework mission of building products that last longer by making them upgradeable, customizable, and repairable. Consumer electronics can be better for you and for the environment.

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How many MAh is the 55 watt hour battery? (alien.top)
submitted 1 year ago by Notre-dame-fan@alien.top to c/framework@hardware.watch
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Hi guys, I’m looking to get an AMD framework, and I was just wondering if anyone knew the mAh of the 55-watt-hour battery? The reason I ask is because I’m looking at buying a portable charger, specifically this one: [https://www.baseus.com/products/adaman-power-bank-65w-20000mah?variant=39912115798093], and I was curious how much it’ll charge the framework when the framework is at rest or if it will sustain it while I’m doing light to moderate loads. The reason I ask is because I’m kinda new to this and looking to use the power bank as a charger since I can’t plug the laptop in myself when I’m out and about. (I’m in a wheelchair and can never reach wall outlets.) Thanks!

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[–] Pineappl3z@alien.top 1 points 1 year ago

A better question is what is the Wh rating of the Baseus 65W power bank. mAh is not a useful metric unless pack voltage is also known in order to calculate Wh. Wh is the total specific energy capacity of the battery. The fine print of the 65W Baseus charger notes that the 20,000 mAh is the total addition of the 4 individual cell mAh ratings. This is misleading because the Baseus likely uses 4 cells in series to make a ~15V nominal battery pack that is then fed into a boost converter after the USB-PD handshake confirms laptop pack voltage to be higher.

That was a tangent that isn't helpful. Here's the useful calculation: cells at a nominal voltage of 3.7V × 4 × 5Ah = 74Wh for the Baseus 65W Charger. This means you'll likely be able to charge the Framework's 55Wh battery one full time.