These controllers do not have batteries exactly.  they have a set of capacitors on a small daughter board attached to the controller.  If you are out of warranty your options are. buy a used controller that hopefully has a decent capacitor board if the capacitors have not burst and leaked all over your existing controller damaging it in the process you might be able to use a soldering iron to remove them and replace with replacement capacitors. If they have already burst and leaked then it's likely the board is toast and you cannot fix it.  If they are only bulging and have not burst yet you can replace the capacitors.  If you have a good capacitor board from a PS4100 controller the capacitor daughter boards are identical between type 11 and type 12 controllers and can be swapped.  Unfortunately you must be extremely cautious when buying a used controller.  Many of the used models are being sold due to faulty C2F modules so the part you need has already failed on a good portion of the used market.  Make sure the seller specifically guarantees the battery backup C2F module is good.  Even better if they can guarantee it has been swapped out with brand new replacement capacitors and tested extensively.   Of course the last option is buy a new supported array and migrate your group data to the new unit and dispose of the old parts.  Unfortunately with these capacitor based designs they have a very high failure rates when they start to get over 5 years old so even buying a used replacement may not give you many years of extra service unless the company selling them has already refurbished the board with brand new capacitors.  I have a nice burned out example of a capacitor board that leaked badly if anyone cares.  Replaced with a used spare bought from a refurbisher online. Picture of my failed capacitors.  the black stuff is bad. [IMAGE] [IMAGE]
Hi, I have a 'battery failed' error in the secondary controller of a PS6100 that's out of warranty. In the event log you can see a more detailed error 'C2F power module voltage is too high'. Does anybody knows what this error means? Can the controller still works with this error?  thanks.
Battery failed on PS6100 controller