Meanwell power supply to charge lifepo4 thru BMS?
- Thread starter wineboyrider
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Gordo
100 kW
I have more time than money.
wineboyrider
1 MW
I paid $69.95 for my s350-48v from sureelectronics.com with shippng
I could have got 2 of the 24v 6.3 amp ones from allelectronics.com delivered for $60.00 including shipping..
I could have got 2 of the 24v 6.3 amp ones from allelectronics.com delivered for $60.00 including shipping..
Gordo
100 kW
wineboyrider said:I paid $69.95 for my s350-48v from sureelectronics.com with shippng
I could have got 2 of the 24v 6.3 amp ones from allelectronics.com delivered for $60.00 including shipping..
I contacted sure directly, not through ebay and the price was $32US plus $15US shipping to Canukistan. No duty or taxes, which is very odd.
8)I`m adding the pictures again so one can see the good/bad.
wineboyrider
1 MW
Maybe they love Canada better!?Gordo said:wineboyrider said:I paid $69.95 for my s350-48v from sureelectronics.com with shippng
I could have got 2 of the 24v 6.3 amp ones from allelectronics.com delivered for $60.00 including shipping..
I contacted sure directly, not through ebay and the price was $32US plus $15US shipping to Canukistan. No duty or taxes, which is very odd.
I`m adding the pictures again so one can see the good/bad.View attachment 1
Weird huh?
wineboyrider
1 MW
Got the meanwell 48v power supply and used it to charge by my 36v 20ah ping pack and this sucker kicks 42volts at a little over 10amps! 8) 8) 8) 8) 8) 8) 8) 8) 8)
I think it will work great as a pepsi machine charger! Now I'll be able to juice up and have more than enough watt hours for my ride.
Was wondering if dare try charging through the bms????
I think it would cook the fets more than anything on the BMS?
I think it will work great as a pepsi machine charger! Now I'll be able to juice up and have more than enough watt hours for my ride.
Was wondering if dare try charging through the bms????
I think it would cook the fets more than anything on the BMS?
Gordo
100 kW
My Capacitor BMS arrived by DHL this morning. Looks scary small to me, so first thing is to mount it in some PVC gutter with an old 'puter PS fan on one end. Then to get some 10mm terminal ends and mount it on the scoot. Can I say 3 Hail Mary's to keep the smoke in or do I have to keep religion out of my BMS program?
auraslip
10 MW
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- Mar 5, 2010
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Based on my experience the more help you get with them the better. I just re-read the thread, and couldn't find any info on it. Where is it from?
Awesome stuff! My meanwell shall arrive in a few days too. I'm glad we did this instead of ordering more chargers!
About the bms, gaaaaaaah :? I really want to know what it can take too! If your using the current limiting board you could do some fun experimenting and see how much current you can push through it until it fail
Actually - I have a broken signalab bms. One of the LEDS won't turn off, but it still charges. I will try to smoke it once I get my setup running!
dnmun
1 PW
Gordo said:
you use the term capacitor BMS. i noticed that the ad on the BMS battery website uses the term capacity BMS.
is this what you are referring to? do you see any capacitors on the BMS at all?
wineboyrider
1 MW
auraslip wrote:Awesome stuff! My meanwell shall arrive in a few days too. I'm glad we did this instead of ordering more chargers!
About the bms, gaaaaaaah :? I really want to know what it can take too! If your using the current limiting board you could do some fun experimenting and see how much current you can push through it until it fail
Actually - I have a broken signalab bms. One of the LEDS won't turn off, but it still charges. I will try to smoke it once I get my setup running!
I've got a whole bunch of bms boards that don't work...like 4 at least. I don't want to incapacitate the only reliable battery I have right now......? This meanwell pushes 10.8 amps and the wire going into the battery is warm! If you want a few spare parts can let you have em for the shipping....?
I think it will be great as my opportunity charger. I have it totally wired differently than my battery leads leads so I can't f### it up and hook it to the wrong wire. This just what I need, because I have a friend who let's me use his socket at his real estate office so I can swing by shoot the crap for 30-40 minutes and have plenty of juice to get home...?
dnmun
1 PW
i offered to send him some parts already from the old BMSs i got from you.
wineboyrider
1 MW
Cool! Looks like I'm not the only one interested in seeing what happens.....?dnmun said:
wineboyrider
1 MW
Hook up a light bulb with a variable light switch to one of the v+ and v- and a voltmeter or watt meter to the bms and see how much you can push through it?auraslip said:I don't think I need parts - I have two of them to swap parts from - what I need is the skill and knowledge
The light bulb should be able to make the amperage very variable?
I am sure it takes some life out of the pack by doubling the charge voltage though? Which I am ok with, because I am only going to use the 10 amper once in a while.
wineboyrider
1 MW
Had the meanwell cooking today! Literally! The AC power cord going in to the meanwell got really hot! Of course, the thin cord that comes with isn't thick enough...? So next up is to beef up the cords on the AC and the DC end....? I am thinking about initially charging up to around 43 volts by bypassing the BMS and then balance charging using the meanwell..?!
I am more worried about the wires getting hot at this point then anything else..?
I am more worried about the wires getting hot at this point then anything else..?
Spacey
100 kW
I've got my Lipo pack 16S 2P 66V hot off the charger..... I also have my old Lifepo4 20 cell charger that was 73v from the charger.
Managed to adjust the output voltage of the 'KP' charger down to 68v which is as low as I could get it, I then monitor the pack with Cell Log 8's sand stop the charge once the cells hit 4.5v..... I won't be doing any harm with the extra voltage of the charger will I? It's a 5amp charger.
Managed to adjust the output voltage of the 'KP' charger down to 68v which is as low as I could get it, I then monitor the pack with Cell Log 8's sand stop the charge once the cells hit 4.5v..... I won't be doing any harm with the extra voltage of the charger will I? It's a 5amp charger.
wineboyrider said:
Good thing you can upgrade the gauge
Did you ended up getting the fechter board? I'm thinking about going meanwell myself.
The iCharger 1010b+ smells funny if i charge over 3 amps on 10S, lol. Getting impatient with that
wineboyrider
1 MW
The build kit should be on it's way soon! For now I can still use it at 10 amps on 36v 20ah battery, but I damn sure ain't going to hook it up to the bms till I can dial down the amps. My hyperion charges the lipo at 5 amps so that' ok for after I get home, but a meanwell is pretty compact for long rides.neptronix said:wineboyrider said:
Good thing you can upgrade the gauge
Did you ended up getting the fechter board? I'm thinking about going meanwell myself.
The iCharger 1010b+ smells funny if i charge over 3 amps on 10S, lol. Getting impatient with that
How do you know what you can charge the lipo packs at? Is it on the battery specs or dare I charge a 12s 5ah battery pack at 9 amps!???
auraslip
10 MW
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Cross posted:
I just got two of these genuine s-150-27 meanwells off ebay for $20 each.
Rated at 5.6a - very small, but no fan. These were gonna be my "at home chargers" but they may be small enough to carry around in the battery box. Probably need fans for that though!
click for bigger view.
I'm going to use fetchers limiting board with these, unless anyone can see a way I could limit the current an easier/cheaper way. I'm also going to be using isolated cell-logs and relays to break the 110v line with the HVC alarm. This is a short term solution until I can afford a new bms for my 16s ping pack.
wineboyrider said:How do you know what you can charge the lipo packs at? Is it on the battery specs or dare I charge a 12s 5ah battery pack at 9 amps!???
It says you can charge the lipo at 2C on the packs themselves. 10amps = 2C, 5amps = 1C on a 5 amp hour pack.
but.. but.. the meanwell is rated at 7.3 amps, am i right? are you getting 9 amps out of it because you're running it at lower voltage?
auraslip
10 MW
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erm.... I thought running a meanwell with out lowering the current manually by changing the resistors, or using fetchers board was a sure fire way to burn them up. They come with the stock current limiting at 135% so they can handle peaks, but if you plug it in to a battery it'll suck 135% until it over heats and dies. ????
wineboyrider
1 MW
Yes. The amperage varies according to the voltage. So at 50v it's like around 7.5 amps and spikes when the fan kicks on??neptronix said:wineboyrider said:How do you know what you can charge the lipo packs at? Is it on the battery specs or dare I charge a 12s 5ah battery pack at 9 amps!???
It says you can charge the lipo at 2C on the packs themselves. 10amps = 2C, 5amps = 1C on a 5 amp hour pack.
but.. but.. the meanwell is rated at 7.3 amps, am i right? are you getting 9 amps out of it because you're running it at lower voltage?
wineboyrider
1 MW
The one I have works great only have to watch it until you know your not putting more voltage into the battery. I think this one goes up to 58 volts....?auraslip said:
This thing has the right voltage range for 12s lifepo4 and 12s lipo?
Haven't screwed up anything yet. Only thing I'm worried about is the ping pack getting charged at 10 amps every day....wonder what that does to the life cycle?
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