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Pretty impressive! what's the BOM here. That battery seems expensive (most expensive part?)
by asadm 1y ago
Pretty impressive!
what's the BOM here. That battery seems expensive (most expensive part?)
- tsungxu 1y agoThanks! Yes ~$700 without battery and I scored the Amprius pack on special for $700 but it is currently $1300.
- ZYbCRq22HbJ2y7 1y agoSo, ~$2000 USD? Why not just say that?
- tsungxu 1y agoVariability of price for the Amprius pack, anything from $700-$1350 at four price points.
- ZYbCRq22HbJ2y7 1y agoYeah, can just take the max, like you did with the range calc.
- Sohcahtoa82 1y ago> That battery seems expensive (most expensive part?) At first, I was like "Nah, just looks like my RC car battery", but then I Googled it...and it's a whopping $1,305 [0]. I looked closer at the specs and they're insane for a battery as small as it is. They have double the energy density as measured by both volume and mass compared to my RC car batteries [1]. [0] https://www.upgradeenergytech.com/product-page/gold-v1-6s2p-21600mah-amprius-sa08 https://www.upgradeenergytech.com/product-page/gold-v1-6s2p-... [1] https://www.amazon.com/Zeee-Connector-Vehicles-Helicopter-Airplane/dp/B0BX5MFFX7/ https://www.amazon.com/Zeee-Connector-Vehicles-Helicopter-Ai...
- tsungxu 1y agoYep, to maximize range and flight time capability, you have to have the highest energy density batteries.
- owenversteeg 1y ago440.64 Wh, 21600 mAh/20.4V, 1250W/60A constant discharge, 170A burst for 10s, total pack weight 1332g-1335g depending on connectors which gets you to 360 Wh/kg cell density or 330 Wh/kg pack density. Impressive, but not that far off from much cheaper mass-produced cells.