Milwaukee48-11-2420 M12 REDLITHIUM 2.0 Compact Battery Pack (1-Pack)

Really good lasts long before recharging

The first battery pak I got, for whatever reason would not fit snuggly into the dock on the battery charger and would not charge. So I sent that bp back for a refund and order another bp. The second bp fit much better and charged properly. So far, so good.

Just like new

Buena calidad

Buen producto. 💯

Don’t know why came without the original packing. It looks good and milwaukee quality. I hope that is not refurbish even that it looks new and the description mention it was new. As a milwaukee fan i expected everything including the original packing same way a the hardware store but can’t complain because was cheaper than local.

As a retired electrical engineer who specialized in energy storage, actual battery performance is of prime concern, specifically the 2 Ah, or 2000 milliampere hour. So upon receipt, I fully charge and test each battery and compare to its advertised or namelabel rating. I bought two batteries at a good sale price, free shipping and a state sales tax holiday. Test results were 1.86 and 1.88 Ah at 4 amperes constant current discharge to 8.0V low voltage cutoff, commonly called a 2C rate. Test was conducted on a West Mountain Radio model CBA III.These results are excellent, only 6.5% below rated, considering the 2C rate. Amperes hour rating are, by standard, for a C/20 rate, but who wants to wait 20 hours for a test. So the 2C test only takes 30 minutes. At higher rates (amperage), the delivered Ah will be less. This is always the case and under 10% is expected for this chemistry.Genuine Milwaukee rechargeable Lithium Ion batteries have always tested similarity in my experience with 12 and 18 volt versions of various rated capacities (Ah). That's been 6 of 18V and now 9 of the 12V. I once tried a knockoff 12V and it test way below 50%. I complained, vendor sent replacement, it failed to do better, so vendor refunded.Genuine Milwaukee batteries are tops in performance, quality, durability, etc. in my opinion. Amazon superb vendor.

I try to buy local when I can. I went to my local big box store since I only needed a simple replacement battery for my Milwaukee drill/driver. I figured the battery would be around $15. They had them locked up and an employee had to get it out for me, so I didn't see a price. Took it to the checkout and swiped my card and was shocked that the receipt said 70 bucks! I returned it immediately and took a look at Amazon. It's still more than $15, but that's okay. It's the correct item, charged up nicely, and is working reliably. Quite a difference in price for the same item!