External battery for Thinkpads

[Whitieiii]

Are there any external batteries that are big but small enough to take in a plane and would charge or maintain a charge on Thinkpads with the slim tip connection? Seems that my Thinkpad Yoga S1 has crappy battery life just browsing the web.. don't think it lasts for more than 3-4 hours and if i can get it to last 5-7 hours that would be good enough... Tried a battery i got for mum but it is only 45w i believe and i don't have anything but 90w adapters so it didn't work... Suggestions? Wanna buy a dedicated battery

[Thinkpad4by3]

Step 1: Get rid of that S1 Yoga as a long life machine.
Step 2: Replace it with an X240/X250...
Step 3: Use the internal 24wh + external 72wh battery

Now you have 8+ hours of battery life.

I don't know of any Lenovo OEM powerbanks and I honestly wouldn't trust a power bank from any other manufacturer for laptops but YMMV.

[Whitieiii]

Step 1: Get rid of that S1 Yoga as a long life machine.
Step 2: Replace it with an X240/X250...
Step 3: Use the internal 24wh + external 72wh battery

Now you have 8+ hours of battery life.

I don't know of any Lenovo OEM powerbanks and I honestly wouldn't trust a power bank from any other manufacturer for laptops but YMMV.

might do that if external batteries an't that good... I do like the Yoga part of the Yoga S1 but it just doesn't have any battery life at all.. I might look into going eather x240 i3 or X1 Tablet Gen 2 M3 (or lowest cpu with 8gb ram)... I always love the battery life of my T440s but want something small for portability I've held off for long enough so might as well do it...

[CrazyTPFan]

Why not use the T440s as your travel machine? I mean, it’s not that big or heavy.