Some of these batteries are authorized to be used on board the STS or attached to pay loads to be transported into the cargo bay of the STS. 3.2 High rate cells and batteries. Bv high rate, we consider cells and/or batteries able to deliver currents of more than C/10, or able to be discharged in less than 10 hours. To obtain these high powers with attractive power densities and without safety hazards, specific cells have to be used. Saft. Space Department is presently qualifying the first 250 Ah - 30 Volts battery designed to be discharged in 6 hours, and able to deliver peak currents or 75 Amperes for several minutes. That battery is not Man rate. Some design, manufacturing, and qualification changes would have to be implemented to allow it to fly on board the STS. This battery, as it is today on the shelf, has external dimensions of 333 x 333 267 mm and weighs 38 kg. Its thermal control is ensured by equilibrium between thermal internal dissipation for a given discharge rate and space environment. Electrical heaters are included to heat the battery in case of low currents. Actual deliverable energy is 8400 to 10400 Wh. depending of conditions ROM price estimate is 120 kAU. 4 Discussion with regard to the Powersat demonstrator. That type of battery has already been built using
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