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MikeyC
Joined: 24 Jan 2017
Posts: 21
Location: 1GA0
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 Posted: Tue Aug 11, 2020 3:24 pm Post subject: Lithium Battery |
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FWIW I’m installing a Shorai LFX19A4-BS12; 19Ah, 285 CCA LiFePO4 motorcycle battery. I have no direct experience, so this is not an endorsement. It’s small (5.83x3.39x3.46), and light (2.47lb). We’ll see. That’s why they call it experimental.
Mike Cowan
On Tue, Aug 11, 2020 at 11:42 AM Mark Fox <saafbusiness(at)gmail.com (saafbusiness(at)gmail.com)> wrote:
| Quote: | What's the group experience with swapping out the lead acid motorcycle battery for Lithium ion or lithium polymer ?
I have noticed one thing with the Stratus set up. If I have a steep decline at low power, the Stratus will sometimes power off - I assume because of low voltage.
At least for me the 912 (1995 vintage) has always had an issue with not enough electrical power if heavily loaded....LED's lights in recent years has really helped
My current lead acid battery is the typical 10 Ah..but there are lithium at better Ah and cranking amps at 1/5 the weight. Also it could eliminate teh need to hook up a trickle charger after every flight before heading home.
Just wonder if anyone has experience...theoretically there are many more safety features on these batteries in the last couple years to stop runaway and fires.
Thanks
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Mike Cowan |
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DiscoverPulsar
Joined: 24 Jan 2019
Posts: 10
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| Posted: Tue Aug 11, 2020 3:33 pm Post subject: Lithium Battery |
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The EarthX batteries for,experimental,aviation have a lot of safety features built in. Expensive but likely worth it
https://earthxbatteries.com/product-category/experimental-aircraft
On Aug 11, 2020, at 6:26 PM, Michael Cowan <mikey.flyer53(at)gmail.com> wrote:
FWIW I’m installing a Shorai LFX19A4-BS12; 19Ah, 285 CCA LiFePO4 motorcycle battery. I have no direct experience, so this is not an endorsement. It’s small (5.83x3.39x3.46), and light (2.47lb). We’ll see. That’s why they call it experimental.
Mike Cowan
On Tue, Aug 11, 2020 at 11:42 AM Mark Fox <saafbusiness(at)gmail.com (saafbusiness(at)gmail.com)> wrote:
| Quote: | What's the group experience with swapping out the lead acid motorcycle battery for Lithium ion or lithium polymer ?
I have noticed one thing with the Stratus set up. If I have a steep decline at low power, the Stratus will sometimes power off - I assume because of low voltage.
At least for me the 912 (1995 vintage) has always had an issue with not enough electrical power if heavily loaded....LED's lights in recent years has really helped
My current lead acid battery is the typical 10 Ah...but there are lithium at better Ah and cranking amps at 1/5 the weight. Also it could eliminate teh need to hook up a trickle charger after every flight before heading home.
Just wonder if anyone has experience...theoretically there are many more safety features on these batteries in the last couple years to stop runaway and fires.
Thanks
|
| | - The Matronics Pulsar-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Pulsar-List |
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paqs345(at)gmail.com
Guest
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| Posted: Wed Aug 12, 2020 5:44 am Post subject: Lithium Battery |
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The Rotax engines have generators, which cannot by design produce much power at low rpm. If you have a high electrical load, on the ground and in flight at low rpm the battery will have to provide this power. The battery only gets charged at cruise rpm.Â
It is best to minimize the electrical loads and times spent at low rpm. If necessary, only turn those items on after takeoff and turn them off before landing.
Some installations have a separate alternator for that reason.
Lithium batteries can help, but they also need to be charged. Charging them without a battery management system specifically for them will greatly reduce their life and increase the chance of issues with them. I don't think it is worth the expense.
I have a fairly large lead battery in mine, in the back which helps with the cg during solo flight.Â
Sonja
On Tue, Aug 11, 2020 at 4:26 PM Michael Cowan <mikey.flyer53(at)gmail.com (mikey.flyer53(at)gmail.com)> wrote:
| Quote: | FWIW I’m installing a Shorai LFX19A4-BS12; 19Ah, 285 CCA LiFePO4 motorcycle battery. I have no direct experience, so this is not an endorsement. It’s small (5.83x3.39x3.46), and light (2.47lb). We’ll see. That’s why they call it experimental.
Mike Cowan
On Tue, Aug 11, 2020 at 11:42 AM Mark Fox <saafbusiness(at)gmail.com (saafbusiness(at)gmail.com)> wrote:
| Quote: | What's the group experience with swapping out the lead acid motorcycle battery for Lithium ion or lithium polymer ?
I have noticed one thing with the Stratus set up. If I have a steep decline at low power, the Stratus will sometimes power off - I assume because of low voltage.
At least for me the 912 (1995 vintage) has always had an issue with not enough electrical power if heavily loaded....LED's lights in recent years has really helped
My current lead acid battery is the typical 10 Ah...but there are lithium at better Ah and cranking amps at 1/5 the weight. Also it could eliminate teh need to hook up a trickle charger after every flight before heading home.
Just wonder if anyone has experience...theoretically there are many more safety features on these batteries in the last couple years to stop runaway and fires.
Thanks
|
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| | - The Matronics Pulsar-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Pulsar-List |
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