CTC SYS with tabless batteries

[johnmpf]

Has anyone been able to compare the CTC SYS run time with the new tabless batteries vs the old batteries? Considering buying one, but the 10 to 15 minute run time is problematic.

 

[Cheese]

Stay tuned...the tabless batteries aren't scheduled to be released for at least the next 2 months.

 

[luvmytoolz]

Stay tuned...the tabless batteries aren't scheduled to be released for at least the next 2 months.

They're about 6 months away for us in Oz!

 

[Cheese]

I saw something the other day from Festool, where it was suggested that the tabless TBX 4 wasn't going to be released until 2027... Which begs the question, if most of the recently released Festool cordless products will accept 4.0 batteries but not accept 8.0 batteries...why are the tabless 8.0 batteries being released first?

 

[luvmytoolz]

I saw something the other day from Festool, where it was suggested that the tabless TBX 4 wasn't going to be released until 2027...,

Ours are listed as Sep/Oct!

No way are we getting them before the rest of the world, that literally never happens!

 

[Cheese]

Here it is...

 

[luvmytoolz]

Ok when I click into it on the Festool Oz site, we have the same page displayed as that, so I wonder if that means we'll get the TBX8's this year, and it's just the TBX4's that are 2027?

I hope so, I'm hanging out for the 8's!

 

[Cheese]

I'm looking forward to the release of the TBX 4 as the only need I presently have for the TBX 8 at this time, is for the HKC and maybe, in some situations, the AGC 18.

 

[JMDUK]

Has anyone been able to compare the CTC SYS run time with the new tabless batteries vs the old batteries? Considering buying one, but the 10 to 15 minute run time is problematic.

Based off the tabless runtime on Makita’s 40v mini extractor you might get 3-5 minutes extra. Not game changing IMO.

 

[mino]

I saw something the other day from Festool, where it was suggested that the tabless TBX 4 wasn't going to be released until 2027... Which begs the question, if most of the recently released Festool cordless products will accept 4.0 batteries but not accept 8.0 batteries...why are the tabless 8.0 batteries being released first?

One reason could be reliability concerns with cells (selection).

If you remember the issue with some 4.0 HP cells .. if reliability testing from sample production runs did not end with satisfactory results and adjustments to cells selection criteria are necessary the 4.0 5-cell packs would be the ones impacted the most.

The more cells you have in parallel, the easier it is to have a more reliable pack so the same cells type/selection criteria may see a 5-cell pack fail too often while a 10-cell pack from the same cells passes the muster.

This may seem counter intuitive, two effects are at play:
- more cells in parallel, you can choose less-performing cells, better optimized for longevity, or load the cells less
- more cells in parallel means that the cell in the "pair" which is weaker is "supported" by the second cell, taking over parts of its load and seeing the weaker cell stressed less .. thus less likely to fail, failing the pack ..

 

[Cheese]

One reason could be reliability concerns with cells (selection).

If you remember the issue with some 4.0 HP cells .. if reliability testing from sample production runs did not end with satisfactory results and adjustments to cells selection criteria are necessary the 4.0 5-cell packs would be the ones impacted the most.

That was also my assumption, the teething issues with the 4.0 HP battery cells haven't been fully circumvented for the TBX 4.