is the charger for 3.0ah battery o.k to use with 4.oah battery

Yes you can! You can charge all kind of m18 batteries on the same charger. Same for M12, M14 and M28. As long as it fit in the charger ;)

Does the led power indicator work or is it fake?

From what I can tell the legitimate Milwaukee Batteries. I tend not to take a lot of notice of the indicator..your no when it’s running low when I use and when you need to charge it.

Will this battery fit m18bpo-o drill?

Yes it fits all milwaukee 18 volt drills

How long does this battery take to charge?

Have not timed the charging period. My experience is that all Milwaukee batteries charge quickly and turn-around is fast. Milwaukee is top bracket.

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🔧 Power your passion with Milwaukee!

SAFETY FIRST - Equipped with overload protection and a temperature management system for peace of mind.
BUILT TO LAST - Individual cell monitoring ensures optimal run time and long-term durability.
STAY INFORMED - Fuel gauge keeps you updated on remaining charge, so you never miss a beat.
WEATHER WARRIOR - Designed to operate in extreme conditions, down to -18°C.
POWER UP YOUR PROJECTS - Experience uninterrupted performance with a robust 4.0Ah lithium-ion battery.

The Milwaukee M18B4 4.0Ah Lithium-Ion Battery is a high-performance power tool accessory designed for durability and efficiency. With features like a fuel gauge, individual cell monitoring, and the ability to operate in extreme temperatures, this battery ensures that you can tackle any project with confidence. Weighing only 381 grams, it’s lightweight yet powerful, making it the perfect companion for all your power tool needs.

Reviews

A**N

Correct battery for your tools

Great delivery and battery works perfectly

29.07.2024

G**S

Top stuff!

Thrilled to bits with this driver so far! It packs a far bigger punch than my makita!Feels sturdy and well built but time will tell!The 3 speed setting is helpful depending on what task is at hand.A little heavier than my old makita but that's probably because it's better made!

18.11.2016

H**L

Arrived on time

Good quality

18.03.2023

G**M

Genuine Milwaukee

I purchased two of these and whilst I appreciate the 5.0ah is the same physical size and more powerful, as an ameature DIY'er I had no real need for the bigger battery. Longevity is very much specific to each person, me as a home DIY'er these will likely last a long time from a construction point of view, not being tossed around a building site. The longevity of the cells; negating any as yet undiscovered defects, also depends on use and environment factors. But very happy either way.

13.04.2020

D**

All good

For the price compared to other brands, I'd say your getting good value

13.02.2020

J**E

Battery life

Great quality product. Charge last a good amount of time.

7.12.2019

C**S

Milwaukee 18v 4aH battery

Still early days to comment on the reliability, and ability to hold its charge, but Iam sure I’ll get years of use before I need to replace it.Nice and quick order turn around, ordered on Saturday had it by Tuesday.( standard delivery)

6.11.2018

R**L

Battery died with minimal use within a 10 months

id like for a replacement or repair

6.01.2025

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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Package Dimensions L x W x H	12.6 x 11.2 x 8.6 centimetres
Package Weight	0.78 Kilograms
Product Dimensions L x W x H	17.3 x 8.3 x 15.5 centimetres
Item Weight	381 Grams
Brand	Milwaukee
Colour	Multi
Included components	1
Part number	M18B4
Style	Single
Guaranteed software updates until	unknown

MilwaukeeM18B4 4.0Ah Lithium-Ion Battery - Red

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