View single post by jk
 Posted: Fri Jul 27th, 2018 14:38
jk



Joined: Mon Apr 2nd, 2012
Location: Carthew, Cornwall, United Kingdom
Posts: 6874
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GeoffR wrote:
Robert wrote: Once a battery has gone below a predetermined, critical voltage, NOT to zero, then it can become unstable and dangerous to attempt to re-charge it, that's why if a battery has gone below the critical voltage, the correct charger should refuse to charge it.Absolutely correct, and very expensive when a set of cells costs $64,000! Boeing reasoned, correctly in my opinion, that it was better to allow a complete discharge than have the battery die just short of an airport. A 787 costs rather more than $64,000.

Well those spares or replacements are pretty expensive as well!
How many cells in the set? Voltage and Amperage? Cant they recharge from the engines?



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