Lightweight battery - Page 2 - KTM Duke 390 Forum
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post #11 of 19 Old 04-13-2019, 07:46 AM Thread Starter
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Thanks for the advice, l was obviously mistaken about lithium batteries losing charge over time!
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post #12 of 19 Old 04-14-2019, 06:38 AM Thread Starter
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Love the 3D printed battery holder by the way.
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post #13 of 19 Old 04-14-2019, 07:21 AM
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Thanks for the advice, l was obviously mistaken about lithium batteries losing charge over time!
If anything they are worse than lead ones as they are killed completely when dropping below a certain voltage. They are also massively affected by the cold. The weight/savings make up for it though.

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Love the 3D printed battery holder by the way.
Thanks, it was a pain to design, but worth it. I've got a slightly different version on it now as I have a rapidbike evo to fit in too.

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post #14 of 19 Old 04-15-2019, 01:25 PM
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A Li-Ion battery holds its charge much longer than a lead-acid one.
True though that below approximately 3 to 4 Volts it is very hard to get it charging again (but not impossible).

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post #15 of 19 Old 04-17-2019, 03:50 PM Thread Starter
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I recommend the Exide one, it’s the same size so no problems fitting
Weighs 760 grams
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post #16 of 19 Old 04-17-2019, 04:57 PM
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great post! Thanks!
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post #17 of 19 Old 04-24-2019, 03:56 PM
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I recommend the Exide one, itís the same size so no problems fitting
Weighs 760 grams
The upside is that you don't have to think about how to mount it. The downside is basically you are wasting space as most of that battery will be air. You can use the space to fit an aftermarket piggyback ecu for example.

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post #18 of 19 Old 04-24-2019, 05:39 PM Thread Starter
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Yes l can see that would be an advantage.
But my unit fitted under the rear seat with no difficulty.
Plus it’s easier to get at, not that this one needs to be, it’s only designed to improve the snatchy low RPM fuelling.
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post #19 of 19 Old 04-25-2019, 07:15 AM
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The reason I opted for the W-standard is that the 9Amp/h is the same size as the 12Amp/h (small)
Details: WSTANDARD---lithium battery Leader
As you can see, my space is mostly taken up by the alarm/immobiliser and the PowerTRONIC sits nicely atop the W-standard batt.
In my Duke 200 I run a Magneti Marelli Li-Ion which is the same size as the OEM (but 9Amp.h) as here I do not have the alarm and the PowerTRONIC sits in the same spot as lightning.
As I only can compare the W-standard with the Magneti Marelli (both for over 14,000 km) I will refrain from recommending any as there are so many more brands of Li-Ion batteries.
A helpful feature on the Magneti Marelli battery is the little push button that activates 4 small LEDs to show the condition of the charge without removing the battery.
Heard good comments on Moto-Batt Li-Ion batteries as well.
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