Jesus.

THERE ARE 20V 12Ah BATTERIES.

THEY HAVE THE SAME POWER CAPACITY AS THE LARGEST 20V/60V FLEXVOLT BATTERIES.

BOTH ARE 216 WATT-HOURS.

THE FACT THAT YOU ONLY HAVE 20V 4Ah BATTERIES DOES NOT MEAN THAT IS ALL THAT EXISTS.

Is that simple enough for you?

Jesus Christ, has this whole thing gone on this long because you couldn't be bothered to read a thing I posted and thought no one made 18V/20V batteries bigger than 4 amp-hours because you don't personally have any?

Oh look! A little 18V 2 amp-hour battery next to an 18V 12 amp-hour battery! One is bigger than the other!



Oh look! The 12 amp-hour one says 12 amp-hours and 216 watt-hours on the bottom!



But wait, that's twice what your 6 amp-hour Flexvolt battery holds! How is that possible? A 20V battery can't possibly have the same power capacity as a 60V battery!

That was sarcasm. THE LARGEST 18V/20V BATTERIES HAVE THE SAME POWER CAPACITY AS THE LARGEST FLEXVOLT BATTERIES.

Now we are back where we started: 60V tools have a small efficiency advantage over 20V tools, but that does not translate to a dramatic runtime advantage.

This message has been edited. Last edited by: maladat,

Lot of good choices mentioned. I currently use a cordless battery system, along with my Skil brand worm drive corded saw. The worm drive will cut through anything the cordless wont do. I have burnt up cordless saws cutting wet green treated lumber. Not the ol Skil worm drive.

6 volt tools are still better than any of the 18, 20 or 60 volt tools.

6 volts is the best ever!

I have no need for a battery circular saw. I have had a Milwaukee worm gear for 30 years and it has served me well. I have built several decks, and torn down several more decks, that required cutting up for easy transport to the dump. I only use a circular saw once or twice a year, I do not find it a hassle to use the cord, and its power is amazing.

Thanks everyone.

A member here graciously sent me a corded saw that he no longer needed.

That is why this place is so great.

The generosity of the members of this place is second to none.

Son of a bitch
this thread is pissing me the hell off !

So what I have taken away from this thread...

If you compare apples to apples, number if cells to number of cells, it really makes no difference if you are 18/20 volt or 54/60 volt. The gas tank of each battery is the same. It just comes down to how big your battery is.

And hell no, I won’t tote around a 12 amp hour battery all day long. The 5 amp hour batteries are plenty heavy enough. I’d rather carry around 3 four amp hour batteries, and save my arm from lugging all the weight.

I also have a 6.5” Milwaukee cordless saw (I bought the 6.5” because it’s the only one Milwaukee makes with the blade on the correct side aside if the big spends one) and it cuts just fine with a 5ah battery. It also makes a lot more than a “handful” of cuts. Works for projects around the house.
If I was a framer, I wouldn’t dick with a cordless. I’d just use a Skil worm drive. Since I’m not framing houses, the little guy does fine.

[sarcasm] Wait, three, four amp hour batteries have a third of the power a 12 amp hour battery has, right. [/Sarcasm]

quote:

Originally posted by Beancooker:
If you compare apples to apples, number if cells to number of cells, it really makes no difference if you are 18/20 volt or 54/60 volt. The gas tank of each battery is the same. It just comes down to how big your battery is.

The capacity of the cells matters, too. As far as I know, only two physical sizes of cells, 18650 and 20700, are used, but cells of many different capacities are available in those sizes.

Taking Milwaukee as an example, the HD batteries both have 15 cells - but the 9Ah ones have 3Ah cells and the 12Ah ones have 4Ah cells.

The Milwaukee XC batteries all have 10 cells - 1.5Ah cells in the 3Ah batteries, 2Ah cells in the 4Ah batteries, 2.5Ah cells in the 5Ah batteries, 3Ah cells in the 6Ah batteries, and 4Ah cells in the 8Ah batteries.

The Milwaukee CP batteries all have 5 cells, but I'll skip the list.

Also, the batteries can impact the instant power available to the tool - the batteries with fewer cells and/or lower capacity cells can't deliver as much instant current, which limits the power of the tool.

If you use, for example, a 2Ah, five-cell battery in a big tool like a circular saw or chainsaw, completely ignoring battery life, it won't cut as well as with one of the big batteries because the little battery can't deliver the current the tool was designed for.

quote:

Originally posted by Beancooker:
I also have a 6.5” Milwaukee cordless saw (I bought the 6.5” because it’s the only one Milwaukee makes with the blade on the correct side aside if the big spends one) and it cuts just fine with a 5ah battery.

The argument I have heard for the right side blade is that if you're a right-handed framer trimming stuff over your head, the right side blade is pretty essential (with a left side blade, in the natural cutting position, the shoe of the saw is pressed against the part you're cutting off - if there's even enough there to do so).

Milwaukee does now have a 7 1/4" "rear handle" circular saw with a left-side blade, but I think it's pretty new.