1.2V kpx50 sintered nicad battery as start power 

Super High Discharge Rate Sintered Type Nickel Cadmium Battery 50AH Details   Type: Sintered Type,  super high discharge rate   Model Number: KPX50 or GNC50 Nominal Capacity: 50Ah Weight: 3.5kg Size: 80*74*240MM  Screws of Terminal:   M16 Voltage:   1.2v Usage:   railway vehicle,military,aviation, electric power system, boat, internal combustion engiee,etc. Container:   PP/MBS Brand Name:  TaiHang or OEM Certificate:    ISO 9001, 14001, 18001, SGS,CE, CRCC,ect. Ni-Cd Storage Battery   Taihang Power begin to produce rechargeable battery since 1956, our Nickel cadmium battery capacity range is from 10ah to 1200ah. NICD battery has the properties of rigid construction, long service life, wide work temperature, resistance to overcharge and overdischarge, low self-discharge, high reliability and easy main…

Sintered Type Nickel Cadmium Battery Ni-Fe Battery 100~200ah Medium Rate Nicd Battery KPM Series Ni-Fe Battery 250~400ah Ni-Fe Battery 450~600ah