What Battery Fits Milwaukee M18 FUEL Multi-Tool?
Quick answer
Our data matches the Milwaukee M18 FUEL Multi-Tool with M18 REDLITHIUM 5Ah, part 48-11-1850 (18V, 5000mAh, Li-ion); REDLITHIUM 5Ah, part 48-11-1850 (18V, 5000mAh, Li-ion); M18 REDLITHIUM 2Ah, part 48-11-1820 (18V, 2000mAh, Li-ion).
Before buying, confirm the battery part number, voltage, connector, and device model shown on your original battery or device label. Live eBay listings are shown below and may change.
Compatible Replacement Batteries
Listings and prices are pulled from eBay and may change. Always verify compatibility before purchase. Last checked Jul 16, 2026.
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Other Milwaukee Devices Using This Battery
Frequently Asked Questions
What battery fits the Milwaukee M18 FUEL Multi-Tool?
Based on our compatibility data, the Milwaukee M18 FUEL Multi-Tool is associated with M18 REDLITHIUM 5Ah (48-11-1850), exact match; REDLITHIUM 5Ah (48-11-1850), exact match; M18 REDLITHIUM 2Ah (48-11-1820), exact match. Always confirm your device model number and the part number on your original battery before purchasing.
How do I verify compatibility before buying?
Check that your device label or manual shows 2836-20 (or M18 FUEL Multi-Tool). Compare the OEM part number, voltage, and connector on your original battery with the specs listed on this page before ordering.
Where do the listings on this page come from?
Current eBay listings for compatible batteries are shown below. Prices and availability change frequently on eBay — verify the listing details before you buy.