Having trouble with your Festool power tool? Well, we're here to help you. Before posting to the forum, give us a chance to diagnose and resolve your issue. In the U.S. and Canada, call us toll-free at 888-337-8600 on Monday-Friday between 8a-5p EST or contact us via email at service@festoolusa.com. For other countries, please visit http://www.festool.com for contact information for your local Festool service department.

Author Topic: 18v Battery not charging - possibly DOA  (Read 1790 times)

0 Members and 1 Guest are viewing this topic.

Offline ali

  • Posts: 145
18v Battery not charging - possibly DOA
« on: March 11, 2015, 11:59 AM »
Has anyone had an 18v battery fail to charge? Bought the PDC set and on its first charge one of the two battery fails to charge. Has a flashing red warning light come up on the TCL charger.

The other battery charges fully and suspect the charger and other battery are both okay.

First time I've ever had something go wrong on a festool, am I doing something wrong? Anybody had any similar experiences?

Festool USA does not pre-approve the contents of this website nor endorse the application or use of any Festool product in any way other than in the manner described in the Festool Instruction Manual. To reduce the risk of serious injury and/or damage to your Festool product, always read, understand and follow all warnings and instructions in your Festool product's Instruction Manual. Although Festool strives for accuracy in the website material, the website may contain inaccuracies. Festool makes no representations about the accuracy, reliability, completeness or timeliness of the material on this website or about the results to be obtained from using the website. Festool and its affiliates cannot be responsible for improper postings or your reliance on the website's material. Your use of any material contained on this website is entirely at your own risk. The content contained on this site is provided for informational purposes only and does not constitute professional advice.


Offline sae

  • Posts: 842
Re: 18v Battery not charging - possibly DOA
« Reply #1 on: March 11, 2015, 12:05 PM »
Check the voltage w/ a multimeter?

Lithium ion batteries are shipped with a 40% charge. Most common mode of failure for lithium batteries is self-discharging below an acceptable level. Most chargers won't charge batteries that fall below 2.7V/cell (so 13.5v assuming the cells are balanced), either from sitting too long on a shelf or a short.

Either way, just call Festool and they'll replace it.

Offline Wuffles

  • Posts: 1313
Re: 18v Battery not charging - possibly DOA
« Reply #2 on: March 11, 2015, 12:45 PM »
I had exactly that with a PDC battery out of the box.

I didn't have it slotted into the charger correctly.
Tool list updated to reflect knowledge :: hammer, screwdriver, one pozi bit, and another bigger hammer.