Txs 18 and batteries

[Lazar]

I bought Festool Txs 18 without battery, but i have bluetooth battery 4.0 and 5.0 and i use it for Txs 18. It's ok to use stronger battery than that was predicted for Txs 18 (3.0) or is it too strong?

 

[luvmytoolz]

The 4.0 and 5.0 ah (amp hour) rating doesn't matter at all, it's nothing more than an indication of how many amps can be drawn for one hour from the battery in ideal/normal conditions, the larger the ah rating, the longer the tool can be powered. So a 4ah battery can deliver 4a for one hour, or 2a for two hours, 1a for four hours, etc. If a 4ah battery lasts you for 8 hours use before needing a charge, then you know that tool pulls 0.5a of current in use. Roughly speaking that is because load, heat and a number of other factors can affect the amount of load drawn.

All that matters is if the voltage is correct. In this case 18v, so all good.

If you wanted you could even use the 8ah batteries for max runtime.

 

[derekcohen]

All that happens with a larger ah rating (5.0 vs 3.0) is that you have a larger, heavier battery at the end of your tool. My choice is a 3.0 (latest version is 3.1) because these are the lightest, and I keep a spare charged up .... if needed; almost only used in my workshop.

Regards from Perth

Derek