Lithium-iron (LFP / LiFePO4) battery for KTM 790 Duke - 2018 KTM 790 Duke Forum
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post #1 of 17 (permalink) Old 07-15-2019, 02:35 PM Thread Starter
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Lithium-iron (LFP / LiFePO4) battery for KTM 790 Duke

Hi guys,

I would like to change my battery with a smaller and lighter one. As far as I understand for that purpose, the battery it must be Lithium-Iron. For me it will be an extra bonus the fact that - I'll have a little more space under the seat. So I can install my gps tracker with antenna pointing up which will give me а more precise, trouble-free and fast positioning. I guess I'll have room for a set of tools too (the basic ones plus a tire repair kit)

If some of you already have experience with this, please share: Manufacturer, model, size, etc..

For now, I've come to this:
Shorai LFX19A4-BS12 (12V, 19Ah, Cold Cranking 285), Dimension 88 x 86 x 148 mm (height x width x length), Weight 1048g...but there are many other alternatives.

Unfortunately in my country such batteries for my bike are not available and I will have to order online. That is why I would be happy to explore the options and hear your opinion on the subject before I proceed with the order.

Thanks in advance

Cheers
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post #2 of 17 (permalink) Old 07-15-2019, 03:24 PM
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I have the shido but as for size itís not much smaller than stock item.
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post #3 of 17 (permalink) Old 12-01-2019, 12:22 PM
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Originally Posted by Pgm View Post
I have the shido but as for size itís not much smaller than stock item.
Is that the lt12a-bs @Pgm ?

Howís it been?

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post #4 of 17 (permalink) Old 12-01-2019, 03:47 PM
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Originally Posted by mstyle View Post
Hi guys,

I would like to change my battery with a smaller and lighter one. As far as I understand for that purpose, the battery it must be Lithium-Iron. For me it will be an extra bonus the fact that - I'll have a little more space under the seat. So I can install my gps tracker with antenna pointing up which will give me а more precise, trouble-free and fast positioning. I guess I'll have room for a set of tools too (the basic ones plus a tire repair kit)

If some of you already have experience with this, please share: Manufacturer, model, size, etc..

For now, I've come to this:
Shorai LFX19A4-BS12 (12V, 19Ah, Cold Cranking 285), Dimension 88 x 86 x 148 mm (height x width x length), Weight 1048g...but there are many other alternatives.

Unfortunately in my country such batteries for my bike are not available and I will have to order online. That is why I would be happy to explore the options and hear your opinion on the subject before I proceed with the order.

Thanks in advance

Cheers
How is your German - It might be worth talking with i-tecc in Germany. https://www.i-tecc.de/shop/ and especially https://www.i-tecc.de/shop/lifepo4-b...rterbatterien/

In general batteries using A123 tech are as good as it gets. I have an 8aH battery - and it puts out 560Amps. You can weld using it.
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post #5 of 17 (permalink) Old 12-02-2019, 12:59 PM
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Is that the lt12a-bs @Pgm ?

Howís it been?
Yes I believe it is, I had it on my first 790 and removed and fitted to my second one, 5k miles no issues whatsoever.
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post #6 of 17 (permalink) Old 01-23-2020, 06:11 AM
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Originally Posted by Pgm View Post
Yes I believe it is, I had it on my first 790 and removed and fitted to my second one, 5k miles no issues whatsoever.
Hi,

Very much interested in a Shido one.
For the 790, is it a 10bs or 12bs recommended? I thought 10.

Also, any check on the weight saving you achieved?
Very tempted, only thing is temperature management. In summer where I am, 45*, you add a couple of track time and the battery temp. may well touch the 50+ ...
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post #7 of 17 (permalink) Old 01-23-2020, 09:53 PM
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When I had a KTM 990SMT, I put a Shorai in it and it would not start in the severe cold. When it was below freezing, no dice. I know they say it needs to 'warm up" by trying several cycles, but not the truth. When I had to have a wrecker come tow it home from work, I sold it off and put a normal battery back in there.
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post #8 of 17 (permalink) Old 01-24-2020, 01:58 AM
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When I had a KTM 990SMT, I put a Shorai in it and it would not start in the severe cold. When it was below freezing, no dice. I know they say it needs to 'warm up" by trying several cycles, but not the truth. When I had to have a wrecker come tow it home from work, I sold it off and put a normal battery back in there.
The "warm up" thing does work. BUT the point is that it cannot on a 790 because there is nothing to load the battery - except the starter and that is also different on new KTM's.

I have been using (even making) LiFePO4 starter batteries for a long time. ime the best allround solution is leave the AGM in and carry a small LiFePO4 booster pack inside your jacket for REALLY cold starts.

This btw is a 12V - 16aH with a burst amperage of 1120Amps
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post #9 of 17 (permalink) Old 01-24-2020, 02:30 AM
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The new Honda Iím looking to buy has a Li battery, I wasnít aware about How the cold affects it, good info!

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post #10 of 17 (permalink) Old 01-24-2020, 02:38 AM
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The new Honda Iím looking to buy has a Li battery, I wasnít aware about How the cold affects it, good info!
Just get a small "booster" and keep it in an inside pocket (warm).

I find that the only time I get an issue is when I leave the bike INSIDE my mum's garage. It's old and damp and is very often colder than the ambient temps (esp if it rains). My garage here is not heated - but never had an issue. But even in the UK - once it starts and has run it will take hours and hours to cool down to where it's fussy again.
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