and wiring them to the PCB that is connected to the old batteries. They look similar to ones others have posted from Amazon so those will probably work as well as long as the specs match. I had to de-solder the PCB/regulator off of the old and new batteries and then solder the new batteries to the old PCB. Be careful to match up the + and - on both sides. It was a bit of work, but so far it is working good as new. I would only recommend this replacement to someone with at least basic soldering skills.
