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SiCore / SiMaxx high-energy vs Shenxing III (LFP)

RANKED BY GRAVIMETRIC ENERGY DENSITY (WH/KG) OF A COMMERCIALLY OFFERED CELL #1 VS #5 CHECKED 06 SEPT 2026
Side by side
Verdict

SiCore / SiMaxx high-energy ranks #1 of 5 on Gravimetric energy density (Wh/kg) of a commercially offered cell (450 Wh/kg); Shenxing III (LFP) ranks #5 (230 Wh/kg).

Rank 01 of 5 · leads
Gravimetric energy density (Wh/kg) of a commercially offered cell
450 Wh/kg
MakerAmprius
Date2025
Verified04 Sept 2026
Evidence
Amprius SiCore product page: "SiCore delivers up to 450 Wh/kg". Amprius Q3 2026 product catalog: silicon-anode cells "offer up to 450 Wh/kg and 1,150 Wh/L — among the highest levels commercially available today". Specific catalog SKUs also list 400 and 395 Wh/kg including packaging. SiCore 500 (500 Wh/kg) is announced for commercial availability in Q4 2026 and is not treated as shipping in this row.
Rank 05 of 5
Gravimetric energy density (Wh/kg) of a commercially offered cell
230 Wh/kg
MakerCATL
Date2026
Verified04 Sept 2026
Evidence
CATL Super Technology Day 21 Apr 2026 and accompanying official coverage of the same event: third-generation Shenxing LFP "reaches an energy density of 230 Wh/kg". LFP class, so it sits below the NCM rows on Wh/kg by chemistry, not by a weaker source.
Try another pair
Source Vendor product pages and official launch posts (Amprius SiCore / catalog; CATL Super Technology Day 2026) Last checked 06 Sept 2026
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