11. The tunnels also contain hundreds of nickel-iron battery cells , used to regulate power and provide backup power. 12. In the case of abnormal heat generation within the battery cell , the separator provides a shutdown mechanism. 13. After charging, check the battery cells again. 14. The difference between LFP and the LiPo battery cells commonly used in the aeromodelling hobby is particularly notable. 15. One technique is to operate a subset of the battery cells at a time and switching these subsets. 16. The German automaker will install the battery cells into the EVs, which will go into series production in 2013. 17. A "'battery pack "'is a set of any number of ( preferably ) identical batteries or individual battery cells . 18. The electrolyte, which allows for ionic movement, and the two electrodes are the constituent components of a lithium-ion battery cell . 19. The battery cell stack has a main fuse which limits the current of the pack under a short circuit condition. 20. He constructed an equation, known as Nernst Equation, which describes the relation of a battery cell 's voltage to its properties.
