1999-2009 [Subscribe to Daily Digest] |
OK, a couple of points I would like to make.
1. Just to be clear, I didn't choose 505uA load for the battery - this is what sanyo had printed on their specs. Believe it or not I did all that research having no idea about electronic engineering :D My only conclusion to draw about SE vs. non-SE is different applications:
- SE batteries are supposed to provide long life with small, continuous power delivery. This is to power up little digital clock or a memory chip on a computer board. They are not capable of delivering high current upon request, but can deliver low current for very long time.
- non-SE batteries have long life IF no current is drawn from them. By design they do not provide any steady state power output but are capable of supporting high drain applications upon request (like in specs, max. pulse 3.5A (!)). Their application is alarm systems, keyless entry, camera flash, etc. They sit there silent and completely off until power is required. Constant, even small drain, will kill them very fast.
Speculation: now from my understanding the batteries in the siren are off, until the siren is triggered without main power, and then they provide current for loud blaring siren (compare application 2 vs 1 above). SE batteries can barely do that. I also believe that TWICE periodically tests the siren batteries by applying high drain pulse and looking if batteries can support it (hence - if they have enough juice to blare the siren). This is where SE batteries fail couple months after install. They can "fool" TWICE by giving all they got, but not for long... /end speculation
2. I tried to find CR17335 batteries for long time with no success. I finally contacted Sanyo about this. Here is a copy of their email:
"Thank you for your interest in Sanyo batteries. In regards to your inquiry, that is an OEM product. (original equipment manufacturer). You must first refer to the original manufacturer, in this case it would Saab. We are under contract with OEM. You can contact them first regarding replacement."
For me it seems that they usually don't sell these batteries, and they made a batch specifically for Saab. This would explain why we can't find them anywhere. Unfortunately, as we know, Saab won't help us with this issue either.
3. Update on "no batteries" project. As some of you may have read before, I removed batteries from siren and hooked up an external battery pack with 4 AA Energizer Lithiums. My pack had on/off switch, and just for fun I set it to OFF (no batteries, open circuit). It's been almost 2 weeks and I had almost no problems. The car usually starts with CHECK OK, however I had STA show up 3 times so far (twice while driving, once on startup). Alarm has never gone off, though. Seems like the system is very confused with this situation. Another guy in UK who installed similar solution had the batteries OFF for a week without problem, but after a week he reported getting constant STAs... again, his alarm also never went off. I keep driving with mine off, will see when the system will finally figure it out and start giving me STA all the time - in which case I'll turn the pack back on.
http://www.saabnet.com/tsn/bb/9-5/index.html?bID=169553
BTW, energizer lithiums have 3000mA max pulse, 2000mA continuous max discharge, and capacity of 3000mAh...
END REPORT
2000 SE V6 Wagon 100k
posted by 68.57.116...
, Thu, 14 Feb 2008 03:48:25, Thu, 14 Feb 2008 19:45:24, Wed, 13 Feb 2008 19:10:23
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
