$Id: battery-pack-density.malblog,v 1.3 2023/12/21 04:56:45 homer Exp $
| [ | Date | | | 2023-12-20 23:52 -0500 | ] |
| [ | Current movie | | | Austin Powers | ] |
Regularly having to interact with rechargeable batteries, I started wondering if they all generally had the same density (amount of stored energy by weight).
| Battery pack | weight | energy | density (Wh/kg) |
|---|---|---|---|
| Sony NP-FZ100 | 83g¹ | 16.4Wh | 197 |
| Mophie Powerstation Mini | 123g¹ | 18Wh | 146 |
| Mophie Powerstation | 250g² | 36Wh | 144 |
| Dell laptop battery | 236g¹ | 60Wh | 254 |
| Samsung Freestyle battery | 907g¹ | 112.32Wh | 123 |
Those are not directly comparable; the Sony camera battery and Dell laptop battery contain minimal electronics, while the others include charging circuitry, and probably elements that help with heat dissipation.
Indeed, the relatively raw camera and laptop battery have the highest densities (≥197 Wh/kg), while the others (all of them with USB-C PD charging and delivery) are in the 123..146 Wh/kg range.
I was a bit surprised that the large Samsung battery pack is less dense than the Mophie options, but perhaps it is weighted on purpose, as it is meant to hold a Freestyle video projector.
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David Haguenauer
<www@kurokatta.org>
$Id: battery-pack-density.malblog,v 1.3 2023/12/21 04:56:45 homer Exp $