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Re: Custom 5kW Vector (QS 205v3/Kelly/DNM)

Posted: Mar 19 2019 1:33pm
by Pb1302
Well it’s done. Just need to make me a bracket for the BMS to hang above the battery. Or I’ll just strap it to the battery maybe.

I only took a few pics during the final stages as I was trying to get it done and forgot to document the last few steps. Pretty much folded the pack in half after I put on my nickel plates with soldered on 6ga wire. Used a torch and some solder...that worked well. It’s not moving. Lol. The. I spit welded those strips with cable on them to the battery ends. So it has the full length of the battery parallel group and cable runs the length of it as well. Wrapped it up in a mile of kapton tape and the neoprene padding. Almost looks like a professional pack. Image

Maybe in the future I will shrink wrap it. But for now it’s a very snug fit. Just gonna leave it alone as it works to be tight inside the frame.

Took it for a little ride at 75.5 volts it dips down to 60 when full throttle is applied for a bit. So sag is there but performance is bang on. It scoots like crazy and feels great. Nice to have the capacity.

For sure the next project in the bike is a better charging setup. My 3A Charger takes forever to charge it up. I need something like a 15A charge so it does not take forever. Going to try to build a series Mean Well power supply setup from a pair of (LRS-350-48) 48v power supplies. Each puts out a max of 7.3A so hope to get 14A total and 84V once adjusted down on each power supply.

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Re: Custom 5kW Vector (QS 205v3/Kelly/DNM)

Posted: Mar 19 2019 8:00pm
by litespeed
Looks good.

Tom

Re: Custom 5kW Vector (QS 205v3/Kelly/DNM)

Posted: Mar 20 2019 7:51am
by minde28383
Is tha Sanyo 60V 150A? Looks like the one but might be any. You are using circuit breaker and relay. Double protection. Have you installed diode on relay? There is magnet/electrical voltage spike when relay coil disengages therefore diode is required to protect controller. Not all controllers require to be protected externally by diode but Sabvoton and other cheap CN controllers needs it.

Re: Custom 5kW Vector (QS 205v3/Kelly/DNM)

Posted: Mar 20 2019 9:22am
by Pb1302
minde28383 wrote:Is tha Sanyo 60V 150A? Looks like the one but might be any. You are using circuit breaker and relay. Double protection. Have you installed diode on relay? There is magnet/electrical voltage spike when relay coil disengages therefore diode is required to protect controller. Not all controllers require to be protected externally by diode but Sabvoton and other cheap CN controllers needs it.
Not Sanyo. Built my own battery pack. Should be able to do 140A and it’s 84V. I do use a relay and breaker. Diode is installed and so is the precharge resistor to protect the Kelly KLS-S 120A controller from power surge.


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Re: Custom 5kW Vector (QS 205v3/Kelly/DNM)

Posted: Mar 20 2019 2:54pm
by minde28383
My bad, mistype, I assumed it is SAYOON relay, not Sanyo.
I keep an eye on these liitoKala 2660. I'm interested how these LittoKala 26650 behave in longer term.

Re: Custom 5kW Vector (QS 205v3/Kelly/DNM)

Posted: Mar 20 2019 6:47pm
by Pb1302
minde28383 wrote:My bad, mistype, I assumed it is SAYOON relay, not Sanyo.
I keep an eye on these liitoKala 2660. I'm interested how these LittoKala 26650 behave in longer term.
Oh. Yes. It’s a Sayoon. Image


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Re: Custom 5kW Vector (QS 205v3/Kelly/DNM)

Posted: Apr 03 2019 10:02am
by tahitiboob
I am also soon to have changed battery I look at these litokala but I'm waiting for your return because to read on the internet some advice is not good you go from 70V to 60V under how much current