Sign in

Please enter your email below and we will send you a new password.

Sign in with

Milwaukee 18V 5.0AH Redlithium-Ion Battery M18B5

In Stock
  • Free delivery on most items
  • Price Match Guarantee
  • Easy 30 day returns


  • Corded / Cordless: Cordless
  • Warranty: 2 Year
TheM18™ 5.0AH REDLITHIUM-ION™ BATTERY features superior pack construction, electronics, and performance to deliver more work per charge and more work over the life of the pack than any battery on the market. M18™ 5.0AH REDLITHIUM-ION™ BATTERY features an advanced design, protecting the pack against harsh jobsite environments.  This protection routes water away from the electronics and out of the battery pack, extends run-time and life by minimizing heat, and prevents pack failures from vibration or drops.  This unique to Milwaukee® design also allows the battery to operate in extreme cold weather conditions (below OoF/-18oC). Managed by Milwaukee’s exclusive REDLINK™ Intelligence, the battery features overload protection to prevent you from damaging your cordless power tools in heavy-duty situations, while the discharge protection prevents cell damage.  It also provides full system compatibility with 60+ M18™ cordless solutions.   Upgrade to the M18™ 5.0AH REDLITHIUM-ION™ BATTERY to instantly increase the run-time and durability of your M18™ cordless tools.
  • REDLINK™ intelligence, provides optimised performance and over load protection
  • Best in class construction, offers long lasting performance and durability
  • Fuel gauge on board displays remaining run time for less down time on the job
  • All weather performance delivers fade free power in extreme jobsite conditions
  • *2.5x more run time
  • *20% more power than a standard 18V lithium battery
  • *2x more life than a standard 18V lithium battery


Corded / Cordless Cordless
Voltage 18V
Warranty 2 Year
Barcode 4892210133618
Part No M18B5
Brand Milwaukee
Product Length 120
Product Width 80
Product Height 80

Pickup In Store

If you don't want to pay for delivery or need to ASAP, you can pick it up in store. Just bear in mind not all stores will have everything in stock. You'll be able to see if they do during the checkout process.

Free Delivery

Large and heavy items are excluded from free shipping, along with items under $59. Remote areas are excluded from free shipping, you will be contacted prior to delivery to confirm shipping charges if necessary.

Delivery Timeframe

We despatch the majority of orders within 1-2 working days. Delivery times vary based on your location (if you're in the sticks, it's gonna take longer!) but most orders will be delivered within the time frames below:

  • Metro (Excludes Hobart Metro) 1-2 days
  • Regional Areas 3-4 days
  • Hobart Metro 3-4 days
  • Remote Areas 6-9 days


Changed your mind? No worries. You just need to get the product back to the store it was shipped from (this is on your receipt) within 30 days, unused and in its original packaging and we'll give you a refund (excluding delivery costs). You can read our full returns & exchanges policy here. 

You may also like

Product Reviews

Write Your Own Review