alt Hacker News"I’ve opted for the largest after-market external battery I could find. When doing casual work the laptop will easily survive for north of 10 hours without a charge, stretching to 12 hours if I’m careful."
Does anyone have a good suggestion for an aftermarket battery? I have a few Thinkpads and I've tried so many batteries and they all last maybe 2 or 3 hours before needing a recharge. If someone is out there making high density batteries for these old laptops I'd love to pick one up.
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I use a T480 as my daily driver and recently upgraded to a 72wh battery after the old 24wh pack died. I bought a Lenovo-branded Total Micro battery off of CDW to ensure I was actually getting what I paid for, as the last battery was a cheap knockoff that barely lasted a year. The 72wh battery was about a $10 difference to the 48wh battery and will easily last 10 hours but could last 14 hours with conservative use.
This is the specific battery I bought: https://www.cdw.com/product/total-micro-battery-lenovo-think...
Since 2020 t14/t16 thinkpads no longer have a user swappable battery without removing screws. So you can get a 50wh standard battery or 82wh. Before 2020 you could get a slightly larger 96wh battery with a bump out, plus the small internal battery.
A power bank with a usb-c 65w pd will work for most laptops. Many of these will be 100wh/20000mah or 150wh/30000mah, to meet airplane limits.