Hero image 0 of Milwaukee M18 Redlithium 18V 5Ah Battery 48-11-1850, 0 of 10
Milwaukee M18 Redlithium 18V 5Ah Battery 48-11-1850
Key item features
- Optimized Performance: REDLINK Intelligence provides optimized performance and overload protection through total system communication between tool, battery, and charger.
- Durable Construction: Best-in-class construction ensures long-lasting performance and durability.
- Onboard Fuel Gauge: Fuel gauge onboard displays remaining runtime, reducing downtime on the job.
- All-Weather Power: Delivers fade-free power in extreme jobsite conditions, ensuring reliable performance.
- Wide Compatibility: Powers more than 60 Milwaukee M18 cordless power tools, offering great versatility.
- Extended Runtime: Provides up to 2.5X more runtime, 20% more power, and 2X more recharges than standard lithium-ion batteries.
- Heavy-Duty Use: Durably built for heavy-duty use, runs cooler, and performs in climates below 0F/-18C.
Generated by AI
Specs
- Volts18 V
- Battery capacity5 Ah
- CompatibilityMilwaukee
- Count per pack0
- Model48-11-1850
- Has written warrantyNo
Current price is USD$69.99
Price when purchased online
Out of stock
How do you want your item?
Out of stock
More seller options (2)
Starting from $65.00
About this item
Product details
Milwaukee 18V M18 REDLITHIUM XC 5.0Ah Battery 48-11-1850 Description:The MILWAUKEE M18 REDLITHIUM XC 5.0 Ah Battery Pack delivers up to 2.5X more runtime, 20% more power, and 2X more recharges than standard lithium-ion batteries. The lithium-ion battery pack features superior pack construction, electronics, and performance providing users more work per charge and more work over pack life than any battery on the market. The rechargeable battery also delivers users with 5.0 amp-hours of runtime. Each battery pack is durably built for heavy-duty use, runs cooler, and performs in climates below 0°F/-18°C.
Features:
- REDLINK Intelligence: provides optimized performance and overload protection using total system communication between tool, battery and charger.
- Best-in-class construction: offers long-lasting performance and durability.
- Fuel gauge onboard: displays remaining runtime for less downtime on the job.
- All-weather performance: delivers fade free power in extreme jobsite conditions.
- Versatility: powers more than 60 Milwaukee M18 cordless power tools.
Pack Includes:
(1) Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack (48-11-1850)
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Volts
18 V
Battery capacity
5 Ah
Compatibility
Milwaukee
Compatible models
M18
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Warnings
Ingestion Hazard
This product contains a battery. Death or serious injury can occur if ingested. A swallowed battery can cause Internal Chemical Burn in as little as 2 hours. Keep new and used batteries OUT OF REACH OF CHILDREN. Seek Immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body.
More items to consider
Based on what customers bought
Milwaukee 48-11-1828 (REDLITHIUM Battery) & 48-59-1812 (M12 & M18 Multi-Charger) $79.99
$7999current price $79.99Milwaukee 48-11-1828 (REDLITHIUM Battery) & 48-59-1812 (M12 & M18 Multi-Charger)
25 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysBest seller Milwaukee M18 & M12 Multi-Voltage Charger 48-59-1812 $29.99 Was $33.34
Best seller
Now$2999current price Now $29.99, Was $33.34$33.34You save $3.35You save$3.35Milwaukee M18 & M12 Multi-Voltage Charger 48-59-1812
1604.6 out of 5 Stars. 160 reviewsSave with
Shipping, arrives in 2 daysMilwaukee 2735-20 18V Lithium Ion LED Flashlight Work Light $38.00 Was $54.99
Now$3800current price Now $38.00, Was $54.99$54.99You save $16.99You save$16.99Milwaukee 2735-20 18V Lithium Ion LED Flashlight Work Light
254.4 out of 5 Stars. 25 reviewsShipping, arrives in 3+ daysMilwaukee 2724-20 - M18 FUEL Blower (Tool Only) $159.99
$15999current price $159.99Milwaukee 2724-20 - M18 FUEL Blower (Tool Only)
184.3 out of 5 Stars. 18 reviewsShipping, arrives in 3+ daysMilwaukee 0880-20 M18 2-Gallon Portable Wet/Dry Vacuum HEPA Filter Included $127.00 Was $149.00 $127.00/count
Now$12700current price Now $127.00, Was $149.00$149.00$127.00/countYou save $22.00You save$22.00Milwaukee 0880-20 M18 2-Gallon Portable Wet/Dry Vacuum HEPA Filter Included
494.4 out of 5 Stars. 49 reviewsShipping, arrives in 3+ daysBest seller Milwaukee 2880-20 M18 FUEL 4-1/2" / 5" Cordless Grinder – Paddle Switch, No Lock, 11A Corded Power, 8,500 RPM, Brushless Motor (Bare Tool) $129.99 Was $180.69
Best seller
Now$12999current price Now $129.99, Was $180.69$180.69You save $50.70You save$50.70Milwaukee 2880-20 M18 FUEL 4-1/2" / 5" Cordless Grinder – Paddle Switch, No Lock, 11A Corded Power, 8,500 RPM, Brushless Motor (Bare Tool)
1154.7 out of 5 Stars. 115 reviewsSave withShipping, arrives in 2 days
Popular items in this category
Best selling items that customers love
Best seller Milwaukee 48-11-1862 M18 REDLITHIUM HIGH OUTPUT XC 6.0Ah Battery Pack (2pc) $163.99
Best seller
Sponsored$16399current price $163.99Milwaukee 48-11-1862 M18 REDLITHIUM HIGH OUTPUT XC 6.0Ah Battery Pack (2pc)
1964.5 out of 5 Stars. 196 reviewsShipping, arrives in 3+ daysBest seller Milwaukee M18 Redlithium 18V 2Ah Battery 48-11-1820 $28.97 Was $60.97
Best seller
Now$2897current price Now $28.97, Was $60.97$60.97You save $32.00You save$32.00Milwaukee M18 Redlithium 18V 2Ah Battery 48-11-1820
554.7 out of 5 Stars. 55 reviewsShipping, arrives in 3+ daysMilwaukee M12 Redlithium 12V 1.5Ah Compact Battery 48-11-2401 $25.97 Was $29.69
Now$2597current price Now $25.97, Was $29.69$29.69You save $3.72You save$3.72Milwaukee M12 Redlithium 12V 1.5Ah Compact Battery 48-11-2401
154.3 out of 5 Stars. 15 reviewsShipping, arrives in 3+ daysMilwaukee 48-11-1850 M18 5.0 Ah REDLITHIUM XC Batteries 18V (6 Pack) $365.06
$36506current price $365.06Milwaukee 48-11-1850 M18 5.0 Ah REDLITHIUM XC Batteries 18V (6 Pack)
25 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysMilwaukee 48-11-1850 M18 5.0 Ah REDLITHIUM XC Batteries 18V (4 Pack) $272.99
$27299current price $272.99Milwaukee 48-11-1850 M18 5.0 Ah REDLITHIUM XC Batteries 18V (4 Pack)
Shipping, arrives in 3+ daysMilwaukee 48-11-1850 M18 5.0 Ah REDLITHIUM XC Batteries 18V (8 Pack) $536.99 Was $688.12
Now$53699current price Now $536.99, Was $688.12$688.12You save $151.13You save$151.13Milwaukee 48-11-1850 M18 5.0 Ah REDLITHIUM XC Batteries 18V (8 Pack)
Shipping, arrives in 3+ daysMilwaukee M12 Redlithium 12V 2Ah Battery 48-11-2420 - Two Pack with Charger $76.00 Was $113.04
Now$7600current price Now $76.00, Was $113.04$113.04You save $37.04You save$37.04Milwaukee M12 Redlithium 12V 2Ah Battery 48-11-2420 - Two Pack with Charger
25 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysMilwaukee M18 48-11-1850 5.0 AH Batteries 18V $63.95
$6395current price $63.95Milwaukee M18 48-11-1850 5.0 AH Batteries 18V
104.3 out of 5 Stars. 10 reviewsShipping, arrives in 3+ daysMilwaukee M18 48-11-1850 5.0 AH Batteries 5.0 18V (2 pack) $119.99
$11999current price $119.99Milwaukee M18 48-11-1850 5.0 AH Batteries 5.0 18V (2 pack)
123.8 out of 5 Stars. 12 reviewsShipping, arrives in 3+ daysMilwaukee 48-11-1850R M18 18V 5.0 Ah Power Tool Battery $79.00 Was $209.00
Now$7900current price Now $79.00, Was $209.00$209.00You save $130.00You save$130.00Milwaukee 48-11-1850R M18 18V 5.0 Ah Power Tool Battery
174.5 out of 5 Stars. 17 reviewsShipping, arrives in 3+ daysMilwaukee M18 XC 15V 5.0Ah Power Tool Battery $79.99
$7999current price $79.99Milwaukee M18 XC 15V 5.0Ah Power Tool Battery
75 out of 5 Stars. 7 reviewsShipping, arrives in 3+ daysMilwaukee 48-11-2401 12V 1.5Ah Power Tool Battery for M12 Cordless Tools, 2 Pack $58.98
$5898current price $58.98Milwaukee 48-11-2401 12V 1.5Ah Power Tool Battery for M12 Cordless Tools, 2 Pack
42.5 out of 5 Stars. 4 reviewsShipping, arrives in 3+ daysMilwaukee M18 48-11-1850 5.0 AH Batteries 5.0 18V $63.95
$6395current price $63.95Milwaukee M18 48-11-1850 5.0 AH Batteries 5.0 18V
164.3 out of 5 Stars. 16 reviewsShipping, arrives in 3+ daysMilwaukee 18V 6 Ah Power Tool Battery for M18 Tools, 2 Pack $249.00
$24900current price $249.00Milwaukee 18V 6 Ah Power Tool Battery for M18 Tools, 2 Pack
92.8 out of 5 Stars. 9 reviewsShipping, arrives in 3+ daysMilwaukee 48-11-1822 M18 REDLITHIUM High Capacity 3.0Ah Battery Pack (2pc) $105.99 $105.99/oz
$10599current price $105.99$105.99/ozMilwaukee 48-11-1822 M18 REDLITHIUM High Capacity 3.0Ah Battery Pack (2pc)
44 out of 5 Stars. 4 reviewsShipping, arrives in 3+ daysMilwaukee 48-11-1813 M18 18V REDLITHIUM FORGE HD 12.0Ah Battery Pack $218.99
$21899current price $218.99Milwaukee 48-11-1813 M18 18V REDLITHIUM FORGE HD 12.0Ah Battery Pack
Shipping, arrives in 3+ daysMilwaukee M12 Redlithium 12V 2Ah Compact Battery 48-11-1828 with Charger $50.00 Was $66.24
Now$5000current price Now $50.00, Was $66.24$66.24You save $16.24You save$16.24Milwaukee M12 Redlithium 12V 2Ah Compact Battery 48-11-1828 with Charger
64.8 out of 5 Stars. 6 reviewsShipping, arrives in 3+ daysMilwaukee M18 REDLITHIUM CP2.0 Battery $59.99
$5999current price $59.99Milwaukee M18 REDLITHIUM CP2.0 Battery
14 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysMilwaukee M18 REDLITHIUM 2.0 Compact Battery Pack – 48-11-1820, 18V Lithium-Ion, 2.0Ah $28.97 Was $34.99
Now$2897current price Now $28.97, Was $34.99$34.99You save $6.02You save$6.02Milwaukee M18 REDLITHIUM 2.0 Compact Battery Pack – 48-11-1820, 18V Lithium-Ion, 2.0Ah
314.1 out of 5 Stars. 31 reviewsShipping, arrives in 3+ daysBest seller Milwaukee M18 REDLITHIUM FORGE XC 8.0Ah Battery Pack – 18V Lithium-Ion High-Output Power Tool Battery - Model 48-11-1881 $129.99
Best seller
$12999current price $129.99Milwaukee M18 REDLITHIUM FORGE XC 8.0Ah Battery Pack – 18V Lithium-Ion High-Output Power Tool Battery - Model 48-11-1881
1834.4 out of 5 Stars. 183 reviewsShipping, arrives in 3+ days
Similar items you might like
Based on what customers bought
Best seller Vpment 4.0Ah Replacement Battery and Charger Compatible with Greenwork 40V Power Tools $59.99
Best seller
3 optionsAvailable in additional 3 optionsSponsored$5999current price $59.99Vpment 4.0Ah Replacement Battery and Charger Compatible with Greenwork 40V Power Tools
194.1 out of 5 Stars. 19 reviewsSave withShipping, arrives in 2 daysMilwaukee M18 Lithium-ion Batteries 3.0 AH Battery 48-11-1828 (2-Pack) $98.99
$9899current price $98.99Milwaukee M18 Lithium-ion Batteries 3.0 AH Battery 48-11-1828 (2-Pack)
64.2 out of 5 Stars. 6 reviewsShipping, arrives in 3+ daysMilwaukee M18 Redlithium High Output 18V 8Ah Battery 48-11-1880 $146.00
$14600current price $146.00Milwaukee M18 Redlithium High Output 18V 8Ah Battery 48-11-1880
73.9 out of 5 Stars. 7 reviewsShipping, arrives in 3+ daysBest seller Milwaukee M18 REDLITHIUM XC5.0 Battery Starter Kit – (2) 5.0Ah Batteries & M18/M12 Charger, 2.5X Runtime, REDLINK Intelligence, Cold Weather Performance (Model 48-59-1852B) $139.99 Was $397.00
Best seller
Now$13999current price Now $139.99, Was $397.00$397.00You save $257.01You save$257.01Milwaukee M18 REDLITHIUM XC5.0 Battery Starter Kit – (2) 5.0Ah Batteries & M18/M12 Charger, 2.5X Runtime, REDLINK Intelligence, Cold Weather Performance (Model 48-59-1852B)
1674.3 out of 5 Stars. 167 reviewsSave withShipping, arrives in 2 daysMILWAUKEE M12 REDLITHIUM CP2.0 Battery 2-Pack & Charger Starter Kit (48-59-2420P) $74.99
$7499current price $74.99MILWAUKEE M12 REDLITHIUM CP2.0 Battery 2-Pack & Charger Starter Kit (48-59-2420P)
134.6 out of 5 Stars. 13 reviewsSave withShipping, arrives in 2 daysBest seller Milwaukee 48-11-1850 M18 REDLITHIUM XC 5.0Ah Battery Pack – 18V Lithium-Ion Rechargeable Power Tool Battery $63.99
Best seller
$6399current price $63.99Milwaukee 48-11-1850 M18 REDLITHIUM XC 5.0Ah Battery Pack – 18V Lithium-Ion Rechargeable Power Tool Battery
1154.5 out of 5 Stars. 115 reviewsSave withShipping, arrives in 2 daysMilwaukee 48-11-1850 2 Pack M18 18V Lithium-Ion Battery 48-11-1852 $119.99
$11999current price $119.99Milwaukee 48-11-1850 2 Pack M18 18V Lithium-Ion Battery 48-11-1852
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysMilwaukee 48-11-1828 M18 18V 3Ah Lithium-Ion XC Extended Capacity Battery $68.95
$6895current price $68.95Milwaukee 48-11-1828 M18 18V 3Ah Lithium-Ion XC Extended Capacity Battery
25 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysBest seller Milwaukee M18 REDLITHIUM XC 5.0Ah 18V Extended Capacity Battery Pack (48-11-1852) – 2-Pack, High-Performance Batteries for Cordless Power Tools $121.99 Was $149.95
Best seller
Now$12199current price Now $121.99, Was $149.95$149.95You save $27.96You save$27.96Milwaukee M18 REDLITHIUM XC 5.0Ah 18V Extended Capacity Battery Pack (48-11-1852) – 2-Pack, High-Performance Batteries for Cordless Power Tools
5864.4 out of 5 Stars. 586 reviewsSave withShipping, arrives in 2 daysStealthmounts Battery Board With Handle And Feet For Milwaukee Black $25.99
$2599current price $25.99+$6.49 shippingStealthmounts Battery Board With Handle And Feet For Milwaukee Black
Shipping, arrives in 3+ daysMilwaukee M18 Redlithium 18V 1.5Ah Battery 48-11-1815 $29.89
$2989current price $29.89Milwaukee M18 Redlithium 18V 1.5Ah Battery 48-11-1815
104.5 out of 5 Stars. 10 reviewsShipping, arrives in 3+ daysMilwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2) $129.99
$12999current price $129.99Milwaukee 48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2)
94.4 out of 5 Stars. 9 reviewsShipping, arrives in 3+ daysNew Genuine 18V Milwaukee 48-11-1852 5.0 AH Batteries M18 XC18 48-11-1850 2-Pack $121.99
$12199current price $121.99New Genuine 18V Milwaukee 48-11-1852 5.0 AH Batteries M18 XC18 48-11-1850 2-Pack
234.1 out of 5 Stars. 23 reviewsShipping, arrives in 3+ daysBest seller Milwaukee M18 REDLITHIUM HIGH OUTPUT XC 6.0 Ah Battery 2-Pack Starter Kit – Includes M18/M12 Charger, 50% More Power, Cooler Performance, 200+ Tool Compatibility (Model 48-59-1862S) $189.00
Best seller
$18900current price $189.00Milwaukee M18 REDLITHIUM HIGH OUTPUT XC 6.0 Ah Battery 2-Pack Starter Kit – Includes M18/M12 Charger, 50% More Power, Cooler Performance, 200+ Tool Compatibility (Model 48-59-1862S)
1314.4 out of 5 Stars. 131 reviewsShipping, arrives in 3+ daysMilwaukee 48-59-1850P M18 REDLITHIUM XC 5 Ah Lithium-Ion Battery (2-Pack) and M18/M12 Charger Kit $137.99
$13799current price $137.99Milwaukee 48-59-1850P M18 REDLITHIUM XC 5 Ah Lithium-Ion Battery (2-Pack) and M18/M12 Charger Kit
53.8 out of 5 Stars. 5 reviewsShipping, arrives in 3+ daysBest seller Milwaukee 48-59-1850 M18 REDLITHIUM XC 5.0Ah Battery & Charger Starter Kit $67.99 Was $199.00
Best seller
Now$6799current price Now $67.99, Was $199.00$199.00You save $131.01You save$131.01Milwaukee 48-59-1850 M18 REDLITHIUM XC 5.0Ah Battery & Charger Starter Kit
1344.2 out of 5 Stars. 134 reviewsSave withShipping, arrives in 2 daysMilwaukee M18 REDLITHIUM FORGE XC8.0 18V High-Output Battery Pack — 8.0 Ah, COOL-CYCLE Active Cooling, 35-Minute Supercharge, REDLINK Intelligence, Durable, Long Life for 250 M18 Tools $148.98
$14898current price $148.98Milwaukee M18 REDLITHIUM FORGE XC8.0 18V High-Output Battery Pack — 8.0 Ah, COOL-CYCLE Active Cooling, 35-Minute Supercharge, REDLINK Intelligence, Durable, Long Life for 250 M18 Tools
Shipping, arrives in 3+ daysBest seller MILWAUKEE M12 REDLITHIUM XC 3.0Ah Battery 2-Pack (48-11-2412) – Extended Runtime and High Performance $64.99
Best seller
$6499current price $64.99MILWAUKEE M12 REDLITHIUM XC 3.0Ah Battery 2-Pack (48-11-2412) – Extended Runtime and High Performance
1304.7 out of 5 Stars. 130 reviewsShipping, arrives in 3+ days
Customer ratings & reviews
How item rating is calculated
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |
Showing 1-3 of 24 reviews
Nov 14, 2025
Dean
Top Reviewer
Item details
Sold and shipped byMass Depot LLCColor: Red
5 out of 5 stars review
Verified Purchase
Post office delivery to wrong address
Post office delivery to wrong address. This is not the first time mad at post office was delivered by home owner to right address thank the gentleman for the delivery
Helpful?5QQOHB6KQTOO601458677
Jan 20, 2026
Matthew
Item details
Sold and shipped byMass Depot LLCColor: Red
5 out of 5 stars review
Verified Purchase
Milwaukee M18 backup battery at great price
I was able to get the backup battery I wanted at a great price!
Helpful?5QQOHB6KQTOO601458677
Feb 1, 2026
Marsha
Item details
Sold and shipped byMass Depot LLCColor: Red
5 out of 5 stars review
Verified Purchase
Looks good, works great, would buy again.
Helpful?5QQOHB6KQTOO601458677
Check out these related products
Milwaukee 48-11-1835 M18 18V High Output 3.0 AH Battery Pack $142.95
$14295current price $142.95Milwaukee 48-11-1835 M18 18V High Output 3.0 AH Battery Pack
44.5 out of 5 Stars. 4 reviewsShipping, arrives in 3+ daysMilwaukee 48-11-2401 12V 1.5Ah Li-Ion Compact Battery 3 Pack $87.99
$8799current price $87.99Milwaukee 48-11-2401 12V 1.5Ah Li-Ion Compact Battery 3 Pack
Shipping, arrives in 3+ daysMilwaukee 48-11-1840 M18 REDLITHIUM XC 4.0Ah Extended Capacity Battery Pack $92.00
$9200current price $92.00Milwaukee 48-11-1840 M18 REDLITHIUM XC 4.0Ah Extended Capacity Battery Pack
21 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysMilwaukee M12 REDLITHIUM XC6.0 Battery Two Pack – (2) 6.0Ah High-Capacity, Long-Lasting Power for M12 12V Tools 48-11-2460X2 $199.98
$19998current price $199.98Milwaukee M12 REDLITHIUM XC6.0 Battery Two Pack – (2) 6.0Ah High-Capacity, Long-Lasting Power for M12 12V Tools 48-11-2460X2
193.9 out of 5 Stars. 19 reviewsShipping, arrives in 3+ daysMilwaukee 48-11-2401 12V 1.5Ah Li-Ion Compact Battery 9 Pack $238.99
$23899current price $238.99Milwaukee 48-11-2401 12V 1.5Ah Li-Ion Compact Battery 9 Pack
Shipping, arrives in 3+ daysMilwaukee 48-11-2401 12V 1.5Ah Li-Ion Compact Battery 12 Pack $314.99
$31499current price $314.99Milwaukee 48-11-2401 12V 1.5Ah Li-Ion Compact Battery 12 Pack
Shipping, arrives in 3+ days