


36V/18V (4Ah/8Ah) Mulit Volt Tabless Battery, 381991M
Marsoni
M251S
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Friday, May 29
36V/18V (4Ah/8Ah) Mulit Volt Tabless Battery, 381991MOverview The Metabo HPT 36V 18V MultiVolt Tabless Battery (381991M) is designed for powering 36V and 18V Metabo HPT cordless tools across light duty and heavy duty applications. MPN 381991M Manufacturer Metabo HPT Voltage 36V 18V (MultiVolt) Capacity 4Ah (36V) 8Ah (18V) Maximum Output 2160W Cell Technology 21700 Lithium Ion Tabless Charge Time 40 minutes (with UC36YSL2 charger) Weight 2. 1 lbs Warranty 2 Years Category Power Tool Batteries Technical
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★★★★★ 2
Not compatible with eufy Omni C20.
Style: C20 Parts * 19pcs
The filters are too small. To avoid dust laden air from just going around them I put pieces of paper around the edges as spacers. But they're also shorter too. No chance of a reasonable seal.
Then the vacuum bags are the wrong size too. The robot gives me an error message saying "no vacuum bag is detected". The mop still works, but no vacuum action.
I only bought this kit because the one I was using (that works) was temporarily unavailable.
Never again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
★★★★★ 5
Perfect
Size: 23 Pcs for eufy C20 Omni
Great quality and cost efficient
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Fits my Eufy vacuum well
Size: 19 Pcs for eufy L60/ L50 Series
Bought these replacements for my Eufy vacuum. They fit and work great! No issues.
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Reviewed in the United States on April 6, 2026
★★★★★ 5
Great value and quality parts
Size: 23 Pcs for eufy C20 Omni
The parts are great and working perfectly! Very happy with this purchase.
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Reviewed in the United States on December 17, 2025
★★★★★ 5
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Reviewed in the United States on February 28, 2026
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