Systems and methods for allocating electrical current among battery sets connected in a substantially parallel configuration. A respective state of health is determined for each respective battery set in a plurality of battery sets. The respective state of health reflects a respective present amount of total energy able to be stored by each respective battery set relative to a specification of the respective battery set. A respective allocation of electrical current for each battery set in the plurality of battery sets is determined based on the respective state of health for each respective battery set. A current flow through each respective battery set is configured to its respective allocation of electrical current based on determining the respective allocation.