Author Topic: Syslite rehab?  (Read 3704 times)

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Offline Kodi Crescent

  • Posts: 734
Syslite rehab?
« on: June 25, 2018, 09:50 AM »
I have some the first generation Syslites.  They do not turn on unless plugged in.  Kind of defeats the purpose for having it.  Has anyone taken these apart and replaced the batteries?

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Offline Frank-Jan

  • Posts: 1018
  • Dutch Canadian living in Belgium
Re: Syslite rehab?
« Reply #1 on: June 27, 2018, 06:23 AM »
I didn't have the need yet, mine is from 2012 and the battery is still good. From the looks of it you can open the back with a torx driver. Please update if you have a go at it.

Offline yetihunter

  • Posts: 570
Re: Syslite rehab?
« Reply #2 on: June 27, 2018, 02:44 PM »


Boom Shaka Lakka

Offline Kodi Crescent

  • Posts: 734
Re: Syslite rehab?
« Reply #3 on: June 28, 2018, 07:07 PM »
I didn't have the need yet, mine is from 2012 and the battery is still good. From the looks of it you can open the back with a torx driver. Please update if you have a go at it.

You can open the back with a Torx driver.  You have to do a bit of prying to get the housing away from the metal base.  It does not want to come off easily, but it comes apart in two pieces.  The battery pack is located between the 2 housing halves.

The battery pack consists of (2) 18650 LI-on cells wired in series, with a thermal protection circuit attached.  Replacement cells and parts from a local battery store cost about $20.

Rebuilding it took about 3 hours.  Most of the time was spent rebuilding the battery pack and figuring out how to get the housing away from the frame.  I don't know that I find this thing useful enough for that amount of effort; others may have a different experience.

Offline Frank-Jan

  • Posts: 1018
  • Dutch Canadian living in Belgium
Re: Syslite rehab?
« Reply #4 on: June 28, 2018, 07:21 PM »
Thank you for the update. If you would get the more expensive original festool part, would that make it plug and play, or is there soldering required either way? If that's the case, I'll probably just keep using it with an external battery when mine dies. (I can solder gutters and zinc dripcaps, but I never tried electronics)
« Last Edit: June 28, 2018, 07:27 PM by Frank-Jan »

Offline yetihunter

  • Posts: 570
Re: Syslite rehab?
« Reply #5 on: June 28, 2018, 10:00 PM »
I’m going to go with it’s probably got the pigtail hanging off of it. No soldering.
But very tight connectors. 


Offline Kodi Crescent

  • Posts: 734
Re: Syslite rehab?
« Reply #6 on: July 01, 2018, 08:36 AM »
Sorry I didn't see your message before you tore that apart. [sad]

It is a plug-in part.  I had to tear that apart down to the cell level and carefully get the little electronic board out between the cells.
The battery store offered pack building services, but they wouldn't do it for Li-on batteries; those batteries carry a risk of fire or explosion if they get too hot.  Ideally, a spot welder is used to re-assemble the pack using metal tabs.

I was able to get the electronic board off the cells with minimal damage to the metal connection tabs.   I have a resistance soldering system, so I could apply heat almost instantly.  I probably could have done it safely with a high-quality soldering iron and the proper flux and solder.

Offline yetihunter

  • Posts: 570
Re: Syslite rehab?
« Reply #7 on: July 02, 2018, 08:03 AM »
 [big grin] I literally was bored out of my mind at that moment. :0