Safety and Performance of Tadiran TLR‐7103 Rechargeable Batteries

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Abstract
In this paper we report on the characteristics and performance of a new rechargeable 3 V battery system developed at Tadiran. The behavior of AA cells of an 800 to 750 mAh capacity is described in terms of charge‐discharge curves, cycle life, and low‐temperature and high‐current performance. At charging regimes around C/10, more than 350 cycles at 100% DOD could be obtained. These batteries have a unique cell chemistry based on /1,3‐dioxolane/tributyl amine electrolyte solutions which provide internal safety mechanisms that protect the cells from short circuit, overcharge, and thermal runaway upon heating up to 135°C. This behavior is due to the fact that the electrolyte solution is stable at low‐to‐medium temperatures but polymerizes at temperatures over 125°C.

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