Bought this for my build. Was looking for something more affordable for the next one. I like what y’all have going on here.
At some point I need to dial down my charger for the same reason @eboosted mentioned. I live on a hill, so full charge plus brakes equals bad time.
You could build one for $70-80 depending on current with many many more options
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What do you have in mind?
So, if want to charge a 10s and 12s battery with BMSs, I would need both the 48v and 60v power supplies from Amazon?
All you have to do is pick one of these and a power supply, perfect, programmable , lithium charging
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No just the 60 and one of the units, you can program multiple battery profiles and just choose what you’re charging You would need the 15A version for 60V input
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what can you bms charge at?
you don’t need the drok control thing, in fact the last one shows to be same and it’s a constant voltage anyway. that’s what these plain power supplies are. if you want more colors bells and whistles then that’s all I see in them unless they’re actually doing a cc limit when the pack is low and put to a high current charge https://www.amazon.com/LM-High-precision-High-stability-Certification-Communications/dp/B06ZYDZCG9/ref=pd_sbs_328_4?_encoding=UTF8&psc=1&refRID=3AH9XHNXSP2T286R6732
It’s no way the same as the drok things in any way
does it limit current when you put it at a high voltage? I haven’t looked at them other than the label but it says constant voltage on the last one
It has over current and over voltage protection Lol you can kinda disregard any differences in the descriptions other than current rating, they all have the same features
same here:
Built-in cooling fan, over temperature protection, overheating automatic shutdown protection; output overvoltage, overcurrent and short circuit protection. Boot delay soft start, to avoid the power output instantaneous high voltage impact.
still not seeing a difference
I can point to the IC that does it on the droks, I don’t get how a power supply does this other than just discrete components that fail eventually
I get that it “works” Im also not aware of a single lithium battery powered device sold that is charged this way. If cost is the issue and you already have a power supply and you must charge your batteries and your sitting there watching them charge, fine. Otherwise why not do it the proper, safe way and get the most life out of your battery?
I’m also reading lots of other people using the 48 voltage adjustable on 12s packs to 50.4 volts no problem and been doing that for a while and don’t need 60v for 12s. I’m sounding pretty disagreeable.
even that luna supply I bet is just like any other bulk supply. this is standard stuff for boards or bikes with a bms. without a bms you need to be more on top of it
I’m only referencing the 60v for use with the drok units, all I’ve ever referenced was for use with the drok units. No the Luna is a lithium battery charger.
whats a lithium battery charger? I don’t see mention of cc or cv
Ya it’s defo a cc cv charger. Just priced higher than needs to be. I like this other way as a solution to charging different configs without having to buy 2 different chargers.
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but…after reading this http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
I’m thinking the cc cv thing is a misguided solution to lithium. hear me out.
the cv stage is just to make sure the cell isn’t charged to a voltage beyond 4.2 or whatever and that’s not an issue with a plain old power supply as they’re already a cv that’s set by the user.
the cc is PERCIEVED to be a help if youre connecting a low voltage battery to a high voltage charge with a lot of power as it’s said you could potentially put more amps in than good for the cells. I say perceived because this isnt really a problem unless youre using a REALLY high power supply and I’ve read a couple examples where it’s shown that fast charging isn’t bad for li-ion cycle life and the practice is the norm for electric cars these day.
https://cleantechnica.com/2014/09/19/recharging-lithium-ion-batteries-rapidly-harmful/
even if you were to dump continuously 15 amps from the charger above into an 8amp hour pack of 30q cells youre at half of the rated possible charge rate.
And then the thing that IS dangerous with charging lithium is having it sit on trickle charge for too long which is something that a cc cv charge doesn’t deal with I think.
waiting for all naysayer!
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