I do like the idea of a reactivator. The most straight forward tie-in is likely abyssal deadspace ‘magic.’
Triglavian bioadaptive technology makes extensive use of engineered colonies of extremophilic bacteria, that are used to grow, harvest and adapt various resources found in Abyssal Deadspace. Artificial colonizing plasmids integrated into specialist tools used for direct adaptation of technology can be found in Triglavian caches in various stages of development. These mutaplasmids can be used to alter the characteristics of a wide variety of equipment types, depending on the strain and the bioadaptive tool with which they are integrated.
Your idea and mine could hold some synergy. Abyssal Mutaplasmids could reactivate expired accelerators however there is a stronger chance the RNG roll will produce an active accelerator with poor stats versus having used a fresh accelerator in the muta combination process.