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Old 01-18-2020, 07:26 AM   #1 (permalink)
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Milwaukee Batteries......good or junk?

After buying a Milwaukee Fuel 9.0 AH High Output battery......I read the reviews on this particular battery.

https://www.milwaukeetool.ca/Product...ers/48-11-1890


Hummm. Reviews on the battery look pretty poor. Has anyone here bought / used the 9.0 battery? Thots?

I wonder if I should return it and buy two 5.0 AH batteries instead..... Will the power of the 9" grinder be down with "just" a 5.0AH battery? Or, just a shorter run time [ than a 9.0 AH battery ]

Yes, I know the 12.0 battery gets a *better*review than the 9.0 battery, as do the reviews on 5.0 AH batteries. Why is the 9.0 AH battery so different?
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Old 01-18-2020, 08:07 AM   #2 (permalink)
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I run the 9.0 on my Fuel 1/2" impact gun. No problems with it what so ever. Gun is used daily and I probably charge it once a week.
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Old 01-18-2020, 08:27 AM   #3 (permalink)
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honestly never thought about it until this post...

i have a ton of m18 tools. and had 7or8 9.0 batterys at one point. i've junked at least 2 of them, at least one in under a years time. i number my batteries just so i can recognize when one is getting bad, for this reason.

the 9.0's definitely give the tool more power but, compared to the 5.0's they develop problems. of all the 5.0's i've junked i would say they have lasted at least 5years.

i wont buy batterys from amazon anymore, they appear to be genuine, not knock offs, but i've had a couple cases where out of the box they dont perform or are bad. these are they only ones i've returned.

i was just thinking about ordering more 9.0's maybe i'll go with the 12's i dont have any of those yet.
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Old 01-18-2020, 09:20 AM   #4 (permalink)
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Quote:
Originally Posted by tracyb View Post
honestly never thought about it until this post...

i have a ton of m18 tools. and had 7or8 9.0 batterys at one point. i've junked at least 2 of them, at least one in under a years time. i number my batteries just so i can recognize when one is getting bad, for this reason.

the 9.0's definitely give the tool more power but, compared to the 5.0's they develop problems. of all the 5.0's i've junked i would say they have lasted at least 5years.

i wont buy batterys from amazon anymore, they appear to be genuine, not knock offs, but i've had a couple cases where out of the box they dont perform or are bad. these are they only ones i've returned.

i was just thinking about ordering more 9.0's maybe i'll go with the 12's i dont have any of those yet.
You know the batteries have a 3 year warranty right? They even pay for shipping both ways.
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Old 01-18-2020, 09:33 AM   #5 (permalink)
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I have 4 9 ah batteries. I have never had a problem. You definitely notice the extra power in a grinder and weed trimmer.

My BIL has 6 or so 9 ah batteries and had 2 of them blow up. Well, not sure if they actually blew up or just caught fire, but the damage was about the same.

Both of them were being charged in a tool box on the truck with a square wave inverter and most likely had moisture in the area, so don't do that ...
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Old 01-18-2020, 09:45 AM   #6 (permalink)
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Both of them were being charged in a tool box on the truck with a square wave inverter and most likely had moisture in the area, so don't do that ...

That's EXACTLY how I charge my 9.0 battery on my service truck! No moisture in my toolboxes though. It has a Maintainer body on it that has a built in filtered air circulation system.
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Old 01-18-2020, 09:46 AM   #7 (permalink)
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You know the batteries have a 3 year warranty right? They even pay for shipping both ways.
Does not apply to the 9.0 batteries according to the reviews on the Milwaukee site posted above.
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Old 01-18-2020, 10:01 AM   #8 (permalink)
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Does not apply to the 9.0 batteries according to the reviews on the Milwaukee site posted above.
https://www.milwaukeetool.com/Produc...sp-keyfeatures

Says 3 year limited warranty on this page.

As everyone said though, lots of bad reviews on the 9.0 specifically.
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Old 01-18-2020, 02:08 PM   #9 (permalink)
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if you want 120v 15amp equivalent power then get a 12.0, they dont just last longer than a 5.0 they produce more power

i would hate life using a 5.0 battery with a 9" grinder after owning a 12.0 battery
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Old 01-18-2020, 02:17 PM   #10 (permalink)
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5.0 are great.

9.0 are even better but do not put them in a grinder and expect it to live long.

2, 3, & 4.0 batteries are fine for low draw tools like the impact driver and radios/lights.
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Old 01-18-2020, 02:20 PM   #11 (permalink)
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I would not expect a 5.0 to last long at all in a 9" grinder.

3.0 only last about 10min in a 4.5" gei der and easily stall and bog.
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Old 01-18-2020, 09:34 PM   #12 (permalink)
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You know the batteries have a 3 year warranty right? They even pay for shipping both ways.
yeah, i should keep better track and records, but i dont. i honestly use the dog snot out of these tools and batteries, they owe me nothing, and my time is better invested in other areas. i knowingly bleed allot of money in my work.

even if i were starting from scratch again i would 100% go with Milwaukee.
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Old 01-18-2020, 09:54 PM   #13 (permalink)
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5.0 are great.

9.0 are even better but do not put them in a grinder and expect it to live long.

2, 3, & 4.0 batteries are fine for low draw tools like the impact driver and radios/lights.
i try to use 9.0's in my grinders as much as possible. why does that effect their life?... do you mean useable life, or life between charges? the rapid chargers seem to charge faster than i use up a battery. generally if the battery life is less i consider it a corded grinder job.

based on this thread i will be ordering some 12.0's probably monday, unless i hear reason not too. the top three m18 tools i use the most in order are, grinders, portaband ( full size fuel, and smaller non fuel), and drill. the wife stole and now uses one of the vacuums more than any other vacuum in the house.

i also recently noticed they now have 6.0 and 8.0 batteries, why? curious as to which high output battery is the most stable/ longest lasting
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Old 01-18-2020, 10:12 PM   #14 (permalink)
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Ive lost 2 4.5" grinders to my idiot workers feeding them 9.0 till the smoke lets out.

5.0 last till the motor needs to rest and the grinder needs to cool off.
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Old 01-18-2020, 10:16 PM   #15 (permalink)
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yeah, i should keep better track and records, but i dont. i honestly use the dog snot out of these tools and batteries, they owe me nothing, and my time is better invested in other areas. i knowingly bleed allot of money in my work.

even if i were starting from scratch again i would 100% go with Milwaukee.
How much does a 9.0 cost? $150?

The time I used their warranty, it was on a drill. The salesman was at home depot, he looked up the serial number through their website and it was still under warranty. Filled out a little thing and printed a shipping label. A week or so later a new drill arrived.

I realize that trying to get time to do all that can be a pain, but if you ha e more than one dead battery, it should be worth your time.

Last edited by YotaAtieToo; 01-18-2020 at 10:16 PM.
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Old 01-19-2020, 11:06 AM   #16 (permalink)
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I switched from Hitachi to Milwaukee. I've noticed these Milwaukee batteries are about useless in the cold. Never had an issue with my Hitachi. Keep them warm and I have had good luck with my Milwaukees.
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Old 01-22-2020, 09:35 AM   #17 (permalink)
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i have 9ah and 5ah and 1.5ah....the 9.0 of a beast.....the 1.5 is handy for the weight...but lacks runtime and balls

also never had a cold weather issue. My garage is unheated, in northeast winter, hold charge and run normal.
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Last edited by pennsylvaniaboy; 01-22-2020 at 09:39 AM.
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Old 02-09-2020, 07:55 PM   #18 (permalink)
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My m28 batteries lasted anywhere from 8-12 years... most a long time, the ones that died did die very fast but majority lasted for a long long long time.

My m18 batteries so far are great, have 3 or 4 9ah, one of the new 12ah, half dozen of the smaller ones, the 9ah is mostly used in sawz-all and skillsaw.

I'll continue to add m18 and m12 tools and batteries to my shop that's for sure
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