A novel universal battery charger for NiCd, NiMH, Li-ion and Li-polymer. - Floriberto A. Lima; J. N. Ramalho; D. Tavares; J. Duarte; C. Albuquerque; T. Marques; A. Geraldes; A. P. Casimiro; Gert Renkema; J. Been; Wouter Groeneveld (ESSCIRC, 2003)