[amsat-bb] Re: [suitsat2] ARISSat-1 Battery

2011-08-15 Thread Anthony Monteiro
Hi Phil, Yes, that is correct. 73, Tony AA2TX --- On 8/15/2011 1:26 AM, Phil Karn wrote: On 8/14/11 6:11 PM, Anthony Monteiro wrote: Yes, Zinc dendrites will form also if the battery is overcharged but we should not be able to do that on ARISSat-1 so only the silver ones should be an issue.

[amsat-bb] Re: [suitsat2] ARISSat-1 Battery

2011-08-14 Thread Phil Karn
On 8/14/11 6:11 PM, Anthony Monteiro wrote: > Yes, Zinc dendrites will form also if the battery is > overcharged but we should not be able to do that on > ARISSat-1 so only the silver ones should be an issue. Oh, so they form on both plates. Interesting. Charging the battery plates out zinc metal

[amsat-bb] Re: [suitsat2] ARISSat-1 Battery

2011-08-14 Thread Anthony Monteiro
Hi Phil, I think the initial dendrites DO just spark and open up but eventually the spacer is damaged and the short is enough to bring the cell voltage down. Yes, Zinc dendrites will form also if the battery is overcharged but we should not be able to do that on ARISSat-1 so only the silver ones

[amsat-bb] Re: [suitsat2] ARISSat-1 Battery

2011-08-14 Thread Phil Karn
On 8/14/11 3:18 PM, Anthony Monteiro wrote: > I think the explanation is that the battery experienced a > significant event on Aug 11 where it lost the electrolyte > in one or more cells. If this is true, the bad news is > that it will no longer hold a charge and will not operate > in eclipse any