Surface Pro 7 Need Battery Bank

Question

Surface Pro 7 Need Battery Bank

Malcolm Martin 0

My daughter has a Surface Pro 7 and when she starts University next week she is going to have 4 classes twice a week. She is concerned that her battery only will last for 2 classes.

We are looking into getting a battery Bank to recharge for the other 2 classes.

The requirement is a 60 Watt - 15 Volt - 4 Amp

I did find a Ugreen on Amazon but it is 135 watts 20 volt and 3 amps. Chat GPT says that the Volt and Amp need to be the same or you can damage the battery or the computer. The Watts has a chip to protect the unit.

I haven’t been able to find something that matches.

Does anyone have a battery bank they use or another idea.

She and I appreciate your help

She doesn’t have access to an outlet in her classes and only has 15 minutes max between each class.

Thanks

2 answers

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Answer 1

Those charger specifications seem odd as 20 volts x 3 amps = 60W, not 135W. Perhaps that is the per port limit. At any rate, if you are charging your device with a USB-C PD power source, the charging protocol there will negotiate the rate of charge between the charger and the device. If it is not USB-C PD, you should look elsewhere for a charging solution.

You are correct that Surface Pro 7, requires at least 60W for recommended power. More at https://support.microsoft.com/en-us/surface/usb-c-and-fast-charging-for-surface-d320ab19-e4ed-c36d-7458-7d7aec69d34a

Hope this helps,

Greg

Answer 2

Bruce (SqlWork.com) 79,526 Volunteer Moderator

any reliable usb 60w+ power bank will charge the laptop. more import is energy storage. you need about 20,000 mAh for one full charge.

if the laptop is only getting 2-3 hours per charge, I'd look at replacing it with one that had at least 8 hours (advertised as above 12).

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Surface Pro 7 Need Battery Bank

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