Amazon Generic batterys for Millwaukee

[UncleTom]

I ordered 2 5.0ah batterys for my Milwakuee. Thought i would give them a try. Well they are all charged up and ready to go and i used one in my hand grinder and the grinder shuts off like the battery is dead in about 10 seconds. If i wait 5 seconds it will go again. It keeps repeating that cycle. I dont know if both batterys are like that but i will never buy those again. Lesson learned.

 

[JWA]

I ordered 2 5.0ah batterys for my Milwakuee. Thought i would give them a try. Well they are all charged up and ready to go and i used one in my hand grinder and the grinder shuts off like the battery is dead in about 10 seconds. If i wait 5 seconds it will go again. It keeps repeating that cycle. I dont know if both batterys are like that but i will never buy those again. Lesson learned.

Return them, Amazon has a very abundant return policy.

 

[timcasbolt]

Return them, Amazon has a very abundant return policy.

Completely agree. Every manufacturer makes a few duds once in a while. Return for replacement or get a refund, your call.

 

[DoubleR]

I ordered 2 5.0ah batterys for my Milwakuee. Thought i would give them a try. Well they are all charged up and ready to go and i used one in my hand grinder and the grinder shuts off like the battery is dead in about 10 seconds. If i wait 5 seconds it will go again. It keeps repeating that cycle. I dont know if both batterys are like that but i will never buy those again. Lesson learned.

I did the same thing only ordered 18 volt Ryobi batteries from Amazon. Had the same result as you did so I sent them back. Lesson learned.

 

[Russ from MN]

We bought some for my Hitachi drill last year that have worked well! Return them!

 

[Geo-TH,In]

I ordered 2 5.0ah batterys for my Milwakuee. Thought i would give them a try. Well they are all charged up and ready to go and i used one in my hand grinder and the grinder shuts off like the battery is dead in about 10 seconds. If i wait 5 seconds it will go again. It keeps repeating that cycle. I dont know if both batterys are like that but i will never buy those again. Lesson learned.

I only buy 5 - 7 amp hour DeWalt batteries or DeWalt aftermarket ones.
Lesson learned, NEVER drain the battery fully or you ruined it.
Some but not all batteries will shout off when the voltage gets below a safe level.
So running the battery until it stops completely is not advised.
I buy DeWalt batteries or clones and use them on my Black & Decker and Milwaukee tools using adapters.
I also use my 20 batteries on my old 18v DeWalt tools.
I stick with one battery and they will not last forever.
I would not recommend a 2.5 amp hr battery. Go bigger.
I love my Milwaukee sawsall. I also have a Milwaukee 1/4 impact and 1/2 drill.
All work just fine on using an adapter and 20v DeWalt batteries.
These adapters have never drained the battery,

 

[JOCCO]

I have heard this before guess it's a crap shoot. I would send them back and buy an original for your tool. We also went through this with Ryobi more so on rebuilt ones. They did not seem to work well for long. Now might depend on the tool and amp draw etc.

 

[hermit]

I ordered 2 5.0ah batterys for my Milwakuee. Thought i would give them a try. Well they are all charged up and ready to go and i used one in my hand grinder and the grinder shuts off like the battery is dead in about 10 seconds. If i wait 5 seconds it will go again. It keeps repeating that cycle. I dont know if both batterys are like that but i will never buy those again. Lesson learned.

At this time of year there are some pretty good deals to be had on Milwaukee products. Home Depot and Red Tool Store that come to mind, I am sure there are more. You might try their websites. I just bought some M18 Fuel products to add to my Milwaukee herd.

 

[flembo]

I only buy 5 - 7 amp hour DeWalt batteries or DeWalt aftermarket ones.
Lesson learned, NEVER drain the battery fully or you ruined it.
Some but not all batteries will shout off when the voltage gets below a safe level.
So running the battery until it stops completely is not advised.
I buy DeWalt batteries or clones and use them on my Black & Decker and Milwaukee tools using adapters.
I also use my 20 batteries on my old 18v DeWalt tools.
I stick with one battery and they will not last forever.
I would not recommend a 2.5 amp hr battery. Go bigger.

I found if you leave the battery in the adapter it will discharge over time to the point it won't take a charge. this was with the DeWalt adapter and generic battery. I now take the battery out of the adapter when not in use.

 

[Geo-TH,In]

I found if you leave the battery in the adapter it will discharge over time to the point it won't take a charge. this was with the DeWalt adapter and generic battery. I now take the battery out of the adapter when not in use.

The adapter may discharge a battery if the adapter has a usb port.
I have no issues with my adapters
I left a battery in my radio and forgot to turn the radio off. That cost me a battery. Drained the battery completely
There are no loads inside an adapter. They only have 2 wires that connect the + to the correct terminal and the - to the other terminal.
I've even made adapters for people. Adapters have no loads inside just wires

 

[BarnyardEngineering]

It's hit or miss with the aftermarket/knock-off batteries. None of them are as good as the factory batteries. If they were they'd cost just as much.

Torque Test Channel on youtube has tested aftermarket/knock-off batteries in several videos. If you want to know what brands are "okay" and which ones are just plain awful you might want to refer to them.

 

[Geo-TH,In]

It's hit or miss with the aftermarket/knock-off batteries. None of them are as good as the factory batteries. If they were they'd cost just as much.

Torque Test Channel on youtube has tested aftermarket/knock-off batteries in several videos. If you want to know what brands are "okay" and which ones are just plain awful you might want to refer to them.

Do the U-tube testers have test older batteries or just new ones. I have an 18v dewalt battery that is 10 years old. Still good.
On an average I may get about 5 years out of a battery.
My experience is a battery is good and suddenly it isn't. They are not like the only Ni Cad battery that slowly dies

 

[Hoenes]

At this time of year there are some pretty good deals to be had on Milwaukee products. Home Depot and Red Tool Store that come to mind, I am sure there are more. You might try their websites. I just bought some M18 Fuel products to add to my Milwaukee herd.

Needed an 8.0 Milwaukee 18 volt battery to run my new Milwaukee leaf blower. AKA battery eater. 5.0's couldn't keep up. Amazon was 40 bucks cheaper than HD. It's still tough to pay 120 for 1 battery !

 

[caterpillar guy]

The more problems I hear about this cordless stuff the more I smile at my corded tools. I have one drill and impact I got as a gift I use that is cordless. IT works for somethings but not a big used of them. IF I can use my corded tools I'm happy no dead batteries to contend with.

 

[MarkB_MI]

I purchased a couple of knock-off 18V DeWalt batteries off eBay and they've worked well. My DeWalt drill and impact driver are retired in Florida now; I recharge them and use them a bit whenever we go to the condo. New DeWalt 18V batteries or their 18-to-20 volt adapter are too expensive to justify keeping those tools in use, but at 50 bucks a pair the knock-off batteries have been a good investment.

Yesterday I ordered a new battery for my wife's cordless Dyson vacuum. Plenty of cheap Amazon options, but all of them have the occasional 'it caught fire and nearly burned my house down' review. I went for the OEM battery from Dyson at over twice the price of the knock-offs.

 

[Geo-TH,In]

Needed an 8.0 Milwaukee 18 volt battery to run my new Milwaukee leaf blower. AKA battery eater. 5.0's couldn't keep up. Amazon was 40 bucks cheaper than HD. It's still tough to pay 120 for 1 battery !

You just showed that the price of a special high voltage batteries may be something you consider before buying them.
I'm cheap and stick 20 volt DeWalt batteries for all my tools..
I know a man who bought high voltage batteries for his DeWalt circular saw and now the junked the saw.
Refuses to pay the big bucks for the battery.
I know a man who has a Milwaukee chainsaw and his battery has issues too.

2 Pack 7.0Ah M -18 Lithium-ion Replacement for Milwaukee Battery Compatible with Milwaukee M-18 Battery 48-11-1812 48-11-1850 48-11-1852 48-11-1862 for Cordless Power Tools Battery $40​

 

[Geo-TH,In]

I purchased a couple of knock-off 18V DeWalt batteries off eBay and they've worked well. My DeWalt drill and impact driver are retired in Florida now; I recharge them and use them a bit whenever we go to the condo. New DeWalt 18V batteries or their 18-to-20 volt adapter are too expensive to justify keeping those tools in use, but at 50 bucks a pair the knock-off batteries have been a good investment.

Yesterday I ordered a new battery for my wife's cordless Dyson vacuum. Plenty of cheap Amazon options, but all of them have the occasional 'it caught fire and nearly burned my house down' review. I went for the OEM battery from Dyson at over twice the price of the knock-offs.

Mark,
I thought I was cheap, but you are cheap too.
You can buy an 18v to 20v adapter for $10 or two for $18

Compatible with Dewalt 18V to 20V Adapter, DCA1820 Adapter Compatible with Dewalt 20V MAX Lithium Battery​

I have yet to have a knock off 20v battery catch on fire. I have many good 18v DeWalt tools I power with 5 amp 20v dewalt.

Bargain from Amazon 7a knockoffs

4Pack 7.0Ah 20V DCB200 Li-ion Battery Replacement for Dewalt 20V Battery Compatible with Dewalt 20V $81 That's about $20 for a 7 amp knock-off​

Adapter Compatible with Dewalt 20V Max Battery to Replacement for Milwaukee M-18 18V Battery, DW18ML Adapter Compatible with Milwaukee 18V Cordless Power Tools (Adapter only) $10​

 

[matthies]

I ordered 2 5.0ah batterys for my Milwakuee. Thought i would give them a try. Well they are all charged up and ready to go and i used one in my hand grinder and the grinder shuts off like the battery is dead in about 10 seconds. If i wait 5 seconds it will go again. It keeps repeating that cycle. I dont know if both batterys are like that but i will never buy those again. Lesson learned.

The grinder is the problem, early ones were only for real light use.

 

[BarnyardEngineering]

I learned that you make sure you register your battery warranty IMEDIATELY. If you forget, and then the battery goes bad, you don't have any claim.

I had an expensive 6.0Ah Ryobi battery go bad on me. Fortunately it was registered on their repair website. All I had to do was file a claim and send it in with the pre-paid label provided. It did take a while, but since I sent in ONE battery and got TWO back, I guess I can't complain.

 

[scootergmc]

Just FYI, and you didn't say whether you bought a milwaukee branded battery or a generic (edit- actually you did, I missed it in the title), but the majority of Milwaukee branded batteries sold on Amazon or eBay are fraudulent knock offs, unless the sellers represent themselves as an authorized milwaukee distrubutor. You can confirm the seller through milwaukee's authorized distributor list. I would never buy generics. As has been said, this is a great time of year to find deals on Milwaukees through Home Depot or other distributors.

That doesn't go without saying Milwaukee makes a few duds. Common troublemakers are the M18 8.0 and 12.0 (not the latest forge- at least not yet), and the M12 6.0. But Milwaukee is great with their warranty service if there are troubles within the warranty period.