All right, today's video is going to be on these r5 batteries. I made a video yesterday showing you how to wake them up, how to use them today, i'm testing how far you can push them before they'll quit, and so i know inside the bms board, says 15 amp right so which leads us to believe that they're 50 Amps but let's look at the internal uh mosfets, okay. So let's look at the mosfets. I have one here and let's see if we can look at the name of these monsters here we go.

Can we read that all right? So i think i found it here. Is this guy right here, fbd 3307 z, uh. There are other sub numbers there that come up and i can't find it there's a bunch of them that have different numbers, but they all seem to be this 75 volts, amp, uh, 5.8 million ohm. I guess uh.

So 120 amp times uh, three or four in this case right um yeah. This thing should be able to do 25, apps no problem, and that's what we're seeing in that test that we're running currently running right now, let's see if we can push that until the battery shuts off all right. So it might seem that these will be able to do more than 15 amps right here. I just started this test and i am removing 27 amps, so i'm loading it with 27 amps uh, i'm just using this.

Is the meter right here right and then this is just going into here. This is just a grid tie inverter. I was trying to use this limiter thing, but it's it hasn't been working out, but basically uh 700, almost 800 watts uh. I think there's a way where you can uh tell it now now: that's about it, okay, so this one will show it to you here it had the amp hours.

Let's see what this will end up being at um, it's supposed to have 12.8 amp hours. I think battery right when it was brand new, uh woof. Let's just see this is just a random pack out of the pallet that we woke it up and now we're testing and removing energy at quite fast too. So if you, whatever we get tonight right uh, you can expect to see a little bit more of that if you lower the uh rate at which you remove the energy because we're pushing i mean this is, this is pretty pretty far right.

We're pushing those little mosfets and those batteries at 27, amps, uh, 800 watts right. So all right, so the battery is holding at 27 amps. Look at that down to 33 right, so 4.2 amp hours to go the voltage still almost at 32 volts right. So the battery's holding like a champ holding like a champ, let's see what the final number is going to be all right.

This is not the best meter to use because it reset after the battery turned off. So i'm gon na have to use another one, but it was at 85 percent uh before it reset right so yeah, so we were able to get about 85. Now keep in mind. This is the first cycle that this battery has done in a while.

So maybe recycle it again, uh you'll get closer to maybe 90 um. That's what i i'm going to think. I think we have several other ones in here that we can try, but i think this is just a random battery. I charged it up.

This is a random battery that was off by the way. Not all of them are off, some of them are on, but the ones that are off you know the question might come up is like well how much life is there? Was there any damage done to the batteries to the cells because it was off because they were so low, right and low voltage and usually that is damaging for batteries? So this is just a random one. The first one that i picked off of the stack and i charged it up, so this is uh. You know this is representative, just a random thing.

Um, your uh battery that you get when you buy. This might be. The same might be similar. It might be completely different right, there's gon na be some bad ones in there.

There's gon na be some that are 100 still there right almost like lightly used uh. I think that's just what we get when we get this pallets of batteries that we just don't really know where they're at and so the reason why this is at 85 percent. It quit is because the bms turned itself off. So basically it got down to the voltage.

It was low that it triggered the bms to shut off right. So that's pretty much that that's the usable capacity it was uh. It had 2 amp hours left. Wouldn't it i think a 1.75 amp hours left.

I think something like that right. So if you do the math, let's do the maxi here, yeah so out of 12.8. I think we were able to get about 11 amp hours out of the this battery times 36. This is like not for 396 watt hours right.

So almost almost 400 watts hours out of the total 460 watt hours right, so maybe after a few cycles, you'll gain some more of that, but there you go. This is just uh a simple test and here's the cool thing you can do almost so 27. I did this test at 27 amps continuous, the entire way, also yeah. If you do this at a slower pace, right uh at a less than peak power output right, then you might get better results than the 400 watts or 396 watts out of this pack.

So there you go it's just a simple, quick test on these r5 batteries.

13 thoughts on “27amp 36v battery continous power test – r5”
  1. Avataaar/Circle Created with python_avatars Glen Reynolds says:

    Jehu could I add one of the popular 40 cell Panasonic packs to a pack with these and still have it function ok? Thank you for running tests like these and teaching us what is possible ๐Ÿ˜! Merry Christmas!

  2. Avataaar/Circle Created with python_avatars HalenTech says:

    if the MOSFETs are only rated at 75v I don't see how you could run them in series. Once they are exposed to voltages higher then 75v they are probably going to die. A MOSFET will fail short first most of the time so while you might still be able to charge and discharge the pack the BMS is likely dead.

  3. Avataaar/Circle Created with python_avatars Greg B says:

    Power ratings for battery packs are usually performed at a 0.2C rate.

  4. Avataaar/Circle Created with python_avatars Randy Martin says:

    Merry Christmas to everyone

  5. Avataaar/Circle Created with python_avatars dusty boyer says:

    I have the Bluetti ac200p is there an auxiliary battery pack available that can plug in to it that might double my output or come close ?

  6. Avataaar/Circle Created with python_avatars pauuan thakali says:

    as scooter lithium batteries BMS limits amperage and at 42 volts doesnโ€™t match my 12volt ac inverters to run power tools.. I use a step down buck converter to lower voltage and charge a 12volt AGM lead battery which can supply amps & watts needed.. these scooter packs work great as light weight back up solar banks vs by themselves at limited current.. is what Iโ€™ve learnt..

  7. Avataaar/Circle Created with python_avatars Arnob Vlogs says:

    Nice. Giveaway a battery plz.

  8. Avataaar/Circle Created with python_avatars Alfonso Estrada says:

    Diy gang ๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ‘‘๐Ÿ‘‘๐Ÿ‘‘

  9. Avataaar/Circle Created with python_avatars Freddyjavier Vivarfernandez says:

    Merry christmas

  10. Avataaar/Circle Created with python_avatars KRuslan1000 says:

    Do you know if the BMS dose any balancing?

  11. Avataaar/Circle Created with python_avatars David Oneill says:

    how much does it weigh

  12. Avataaar/Circle Created with python_avatars David Oneill says:

    how much does it weigh?

  13. Avataaar/Circle Created with python_avatars Solar Espresso says:

    Does it get warm or hot?

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