Congratulations Don on building your super-long battery.
Except, carrying a 5.2kg battery (on top of your laptop (2.58kg) and accessories) seem a bit too much for me.
I assume you are aware that the 17-inch laptop has built-in battery that lasts up to 8 hours under wireless productivity, and weight
only 2.99kg (including the laptop and built-in battery).
The 15-inch laptop has built-in battery that lasts up to 7 hours under wireless productivity, and weight
only 2.49kg (including the laptop and built-in battery). Or
just 2.04kg for 13-inch laptop that provides up to 7 hours under wireless productivity.
So you are carrying
at least 7.78kg + the weight of adaptors, compared to
merely 2.04kg. I would go for the light weight version, if I were you.
BTW, did you join the two batteries with duct tape?
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