First real project with the CSC-SYS 50 - Battery Life

jujigatame

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I spent basically all of last weekend, from Friday afternoon until Sunday night in my shop.

I'm building a Mid-century inspired coffee table from a small walnut slab, butcher block, and 5/4 S4S walnut.  It's coming along great, and I'll post pictures when I'm done.

I learned a lot about the CSC and battery life doing this project and I'm going to share what I learned. Please forgive the rant, or join in, or whatever.

First off, battery life...

It doesn't matter.

I know you're saying "WHAT?" but hear me out.  It doesn't matter.

The batteries lasted through the entire weekend. I didn't have to change or charge them once.

Now, this wasn't a very table saw centric design or project, but I used my new CSC as I would have used any other table saw doing this project, and I realized that you really don't use a table saw for that long of a time all at once. I mean, you set it up, and unless you're doing something absolutely huge, you make a few cuts, and go off to do something else, like miters on the miter saw, or glue ups.

The batteries last way longer than you will ever use the saw for at any one time.

Think about this, when was the last time you ran your table saw for more than 30 minutes at one time?  In 30 years of woodworking I don't think I ever have come close to that. Now a cordless vacuum could definitely run for that long at once, or a router, but a table saw?  Probably not.

Sure, some of you are probably going to say "Well, I mill hundreds of feet of 8/4 walnut from slabs I cut from my own property" or something like that...  Well, then yeah, I would probably say that a small, portable jobsite saw really isn't the tool for you, whether it has batteries or a cord.

In fact I would go so far as to say that the CSC or ANY jobsite saw isn't for you if you plan on consistently milling your own lumber. Maybe you should buy a cabinet saw. And if you can't fit a cabinet saw in your shop, maybe think about getting S4S lumber instead of milling your own. It'll definitely handle milling a 8/4 board or two for a project, but what do you do after you've milled that board or two? Odds are you stack and sticker it to rest overnight before you touch it again.  Perfect time to charge the batteries.

However, if you want a small saw with AMAZING precision that you can take literally anywhere, then this may be for you.

But back to the batteries... I ripped about 40lf of 5/4 walnut at one time and it drained the batteries one bar.  Then I went on to shaping and gluing them up. And the CSC just sat there for hours.  I could have put the batteries on the charger and had full charge for the next time I used it (to make mitered lap joints in the walnut), but I didn't really need to because they had more than enough charge for that.

At the end of the weekend (actually Monday night, but I didn't do much on Monday) one battery was at one bar and the other still had two.  So I put them on the charger overnight.  The only issue I could ever see having would be if I forget to put them on the charger at night... Which if my phone is any indication, will definitely happen sometimes.  But the batteries charge in half an hour, so if I do forget, I'll throw them on the charger in the morning and have another cup of coffee or do something else first. If it ever really becomes a problem (and I honestly can't see how it would) I will buy a second set of batteries that will sit on the charger just waiting.

The batteries don't really make a difference from a corded.  I know it sounds crazy, but they really don't change much about your workflow. The main thing I didn't like was having to manually turn on my CT22 every time I made cuts. Even with a remote, I'm too lazy and spoiled at this point to press another button.  I'll probably buy a new MIDI soon just to have the bluetooth.

Dust Collection:

This seems to be another complaint a lot of people are having.

I see their point, even though the DC on the CSC is quite good, it's definitely not as good as other Festool tools. The DC was fine when I was ripping the walnut with the guard installed (and the guard is actually really good and doesn't interfere with your work too badly), but when I did the lap cuts there was a decent amount of dust thrown forward.

I would say the DC is significantly better than any other jobsite saw I've ever used with the possible exception of the Sawstop, (but I only ever demo'ed that one). I expected little more from Festool on this, but it's still better than most, and really not bad at all.

Overall, the saw is an absolute pleasure to use. it's smooth, powerful, quiet, and the sliding table and fence are both fantastic. There's literally zero deflection. Making the lap joints was SO EASY with the digital height control it felt like cheating.

If you're thinking about it, get one, you won't regret it.

 
Thanks for the interesting review as I’m thinking about purchasing one. My current and future projects will not be quite as table saw centric compared to those in the past.

Adding a Festool vac with BT would be a real convenience.  [big grin]
 
As a fellow owner, I agree with your comments regarding the run time and havent once had an issue. One thing, maybe its operator error, is that overtime I power down the unit - the batteries lose their connection to the Sys Vac and I have to re-pair the Bluetooth connections. As I said, maybe it's user error but its annoying when I have lots of trips back and forth between the saw over an extended period when I shut the saw down to conserve battery (honestly I probably dont have to power the saw down as its not drawing much just sitting there)... again user error  ;)

Last comment, I think- overall- this comment is relevant for any cordless power toll except grinders, leaf blowers,pumps, drywall screwdriver and vacuums, (continuous use tools) . 1. most people have extra batteries and 2. how often are you draining, in a single action, an entire battery? it seems runtime somehow became the "thing" to bash cordless tools. For me I'd take more power and less runtime in most applications.... yes there are tools that need longer run times (see first sentence of this paragraph) but who cares if you can drive 800 or 900 screws on a single battery.....  Again I am not totally dismissing runtime for specific applications but too often its a poor metric.
 
mcfal12 said:
One thing, maybe its operator error, is that overtime I power down the unit - the batteries lose their connection to the Sys Vac and I have to re-pair the Bluetooth connections. As I said, maybe it's user error but its annoying when I have lots of trips back and forth between the saw over an extended period when I shut the saw down to conserve battery (honestly I probably dont have to power the saw down as its not drawing much just sitting there)... again user error  ;)

Not to distract too much from the CSC discussion, but  wanted to point out that powering off the vacuum (removing from power or turning to "Off") will clear the saved battery, and you can only pair one battery at a time (but up to 5 remote buttons).  So it may be working as designed, depending on what else you're doing.
 
mcfal12 said:
As a fellow owner, I agree with your comments regarding the run time and havent once had an issue. One thing, maybe its operator error, is that overtime I power down the unit - the batteries lose their connection to the Sys Vac and I have to re-pair the Bluetooth connections. As I said, maybe it's user error but its annoying when I have lots of trips back and forth between the saw over an extended period when I shut the saw down to conserve battery (honestly I probably dont have to power the saw down as its not drawing much just sitting there)... again user error  ;)

Last comment, I think- overall- this comment is relevant for any cordless power toll except grinders, leaf blowers,pumps, drywall screwdriver and vacuums, (continuous use tools) . 1. most people have extra batteries and 2. how often are you draining, in a single action, an entire battery? it seems runtime somehow became the "thing" to bash cordless tools. For me I'd take more power and less runtime in most applications.... yes there are tools that need longer run times (see first sentence of this paragraph) but who cares if you can drive 800 or 900 screws on a single battery.....  Again I am not totally dismissing runtime for specific applications but too often its a poor metric.

I think that the bluetooth connection is designed like that so when you power down one it's not still paired to the last tool... But I don't know about that for certain.  I forgot and left the saw on overnight on Saturday night and it didn't drain the batteries a bit that I could tell.

I seriously thought about the biggest projects I've ever done. I made a kitchen full of cabinet doors and did a lot of ripping and panel sizing on my cabinet saw when I had one. I don't think this would be great for that kind of job, but I also don't think it couldn't do it.  But as I said above, if you're making a lot of cabinet doors all the time, a small jobsite saw really isn't the best choice for you, no matter who makes it or how it's powered.

But I've also made a couple of big bookshelves, and I wouldn't hesitate to use this for a job like that.
 
My experience is a little different to the OP. Can't say that I'm particularly impressed with the battery life; it is at best adequate imho... (Thinking I'll have to purchase a pair of the 8 ah batteries although that's another big spend that I'd rather not have to do)
 
Jujigatame said:
…when I did the lap cuts there was a decent amount of dust thrown forward.
Using the D36 makes a difference. It doesn’t solve the problem, but it’s noticeably better.

You will need the TS 55 swivel connector to attach it. It’s a tight fit, and difficult to get your fingers in to attach it, but it’s doable.
 
tony_sheehan said:
My experience is a little different to the OP. Can't say that I'm particularly impressed with the battery life; it is at best adequate imho... (Thinking I'll have to purchase a pair of the 8 ah batteries although that's another big spend that I'd rather not have to do)

If there was even a rumour circulating about an upcoming AC power converter for these (ala Metabo or Flex,) I'd already have one.
 
tony_sheehan said:
My experience is a little different to the OP. Can't say that I'm particularly impressed with the battery life; it is at best adequate imho... (Thinking I'll have to purchase a pair of the 8 ah batteries although that's another big spend that I'd rather not have to do)

See, my whole point is that the battery is ADEQUATE.

It's completely adequate for almost anything you want to do. In fact, for me, the batteries are more than adequate.

I don't need more than what they provide, because they provide enough for me to get through virtually any project I would attempt, with just a little bit of planning.

That doesn't mean there's absolutely no difference between battery and corded, it means that the batteries work well enough to do whatever you want to do with only a slight modification of your workflow, and at worst, another cup of coffee.
 
Imemiter said:
tony_sheehan said:
My experience is a little different to the OP. Can't say that I'm particularly impressed with the battery life; it is at best adequate imho... (Thinking I'll have to purchase a pair of the 8 ah batteries although that's another big spend that I'd rather not have to do)

If there was even a rumour circulating about an upcoming AC power converter for these (ala Metabo or Flex,) I'd already have one.

You really don't need to plug in the saw.  Just plug in another charger and set of batteries and you'll be fine all day long.
 
Maybe I should've said "barely" adequate. But, yes, a second battery set is as far as I'm concerned pretty much essential. I'm just not sure that the 5ah batteries are good enough and as I said the 8 ah's are very expensive
 
Thank you for the thorough review and insights after using your CSC 50.

I'm currently using an Erika 70 for on-site work and I just adore it. That being said, the 120V option is no longer available, so I always have an eye out for a potential replacement should my van get whacked by a comet or other celestial debris.

Regarding an AC adapter, for my use case this would be helpful as I am sometimes stuck working outdoors in below freezing temperatures. The newer battery chemistries perform better than they used to, but it's still my experience that in cold (below 10F/-12C) conditions Li-Ion battery performance really falls off a cliff, with useful life being ~25% of normal. It's really unpleasant working in those conditions, but sometimes it's unavoidable, and in those cases it's nice to have a corded option or adapter to fall back on.

The work-around for this is to store the batteries in a heated space the night beforehand, then transport and store them in a cooler to keep them warm. In really extreme conditions, once the batteries are discharged the charger will say they're out of a useful temperature range and won't charge them.

Many years ago I went so far as to buy a large cooler, placed a power strip inside (drilling then caulking a hole in the side to run the power cord), along with a "trouble light" with a 60 watt incandescent light bulb, and battery chargers. This was back when I was working 9+ hour days in 0F/-17C conditions. It was decidedly unpleasant, I'm elated to be mostly working in the Shop these days....
 
Tom Gensmer said:
Thank you for the thorough review and insights after using your CSC 50.

I'm currently using an Erika 70 for on-site work and I just adore it. That being said, the 120V option is no longer available, so I always have an eye out for a potential replacement should my van get whacked by a comet or other celestial debris.

Regarding an AC adapter, for my use case this would be helpful as I am sometimes stuck working outdoors in below freezing temperatures. The newer battery chemistries perform better than they used to, but it's still my experience that in cold (below 10F/-12C) conditions Li-Ion battery performance really falls off a cliff, with useful life being ~25% of normal. It's really unpleasant working in those conditions, but sometimes it's unavoidable, and in those cases it's nice to have a corded option or adapter to fall back on.

The work-around for this is to store the batteries in a heated space the night beforehand, then transport and store them in a cooler to keep them warm. In really extreme conditions, once the batteries are discharged the charger will say they're out of a useful temperature range and won't charge them.

Many years ago I went so far as to buy a large cooler, placed a power strip inside (drilling then caulking a hole in the side to run the power cord), along with a "trouble light" with a 60 watt incandescent light bulb, and battery chargers. This was back when I was working 9+ hour days in 0F/-17C conditions. It was decidedly unpleasant, I'm elated to be mostly working in the Shop these days....

I really don't have much to add to that, I will only use it in the shop, or inside where it's warm.  It definitely might not be the solution for you if you're using it in the freezing cold.  I have no idea, and I hope I never need to find out.  I hate the cold.
 
tony_sheehan said:
Maybe I should've said "barely" adequate. But, yes, a second battery set is as far as I'm concerned pretty much essential. I'm just not sure that the 5ah batteries are good enough and as I said the 8 ah's are very expensive

IDK, barely adequate still means that it's adequate for the job. If my phone battery gets me through the whole day and hits 5% right before I plug it in and go to bed, that's barely adequate, but it did everything I needed it to do.

I honestly can't even imagine a situation that I (or most of us) would ever be in where the 5ah batteries drained faster than another set charges (1/2 hour). And as long as that's the case, the saw will have power whenever we need it.  That's really all I could ask for.

If that's not good enough for your situation, it might not be the saw for you, but I really believe that for most of Festool tradesmen users and for ALL of us hobbyist users it really is all we need.
 
The only battery issue I had with my CSC-SYS 50 was when I was using some older 5.2Ah batteries. They didn't seem to last as well (about a year old, bought for cordless track saw). I was cutting some maple for kitchen cabinet door styles and rails. I was using the rip blade, but the finish isn't really too good with that - I found that the fine-tooth blade cuts about as well and has a much finer finish.

ANYWAY, I was thinking of getting another set of newer 5aH batteries, but saw people talking about the 8Ah batteries - are they out yet, and how much?

I already had to get a 2nd set of 4Ah batteries for the cordless CTC-SYS dust extractor (whoever designed that to only work with the 4aH batteries should be given a good talking to! Or smacked...). I think the 4Ah batteries will work in a pinch in the CSC-SYS 50, but not as long (manual says greater than or equal to 4Ah).
 
I would say if one does not have a set of the 8 Ah packs, one should get it over getting another 4 Ah set. If anything then to have options.

That said, you want two SCA 8 or SCA 16 chargers for those. Charging high-capacity packs too slow is not good for their performance.

One can generally get the 4 Ah or 5 Ah packs with tools, not so with the 8Ah ones. Buying standalone, it makes more sense to get the 8.0 packs.
 
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