TY - RPRT TI - Evaluation program for secondary spacecraft cells: Evaluation of storage methods, open circuit versus continuous trickle charge, Sonotone 3.5 ampere-hour sealed nickel-cadmium secondary spacecraft cells AU - Thomas, R. E. PY - 1972 UR - https://ntrs.nasa.gov/citations/19720016398 ID - 19720016398 ER -