Computer inverter to make an emergency home lighting

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Christophe
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Re: Computer inverter for home lighting backup




by Christophe » 09/12/22, 17:51

phil59 wrote:Someone would have any idea ?


Yes, your cells are most likely flushed...maybe not 100% but a majority... : roll: : roll: : roll:

What is the battery configuration in P and S?
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Macro
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Re: Computer inverter for home lighting backup




by Macro » 09/12/22, 18:29

phil59 wrote:Well, with the 48V chargers that Chevreuse/Alain gave me, they charge well.

They are no longer first youths, but they turn.


I would have to try my bike again.... Maybe the charger had problems... or the charging system did not take into account the higher capacity of these cells compared to the old ones... all that I know it's that at least 5 years after the old set of abandoned cells gave me a fucking flash when I accidentally put it on an aluminum plate... There were some left energy in the critters... A friend who had done the same operation as me on the same bike is still satisfied...
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Re: Computer inverter for home lighting backup




by phil59 » 09/12/22, 18:32

This is how the blocks were built, with the voltages taken in 2021

14S=18,83V, the assembly 12S=16,19V, the other assembly 14S=18,95V

All in series, without BMS, it's NiMh.

And I put the 2 blocks in // on the inverter.
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hmmmmm, hmmmmmmmmmmmmm, hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhmmmmmmmmm, huh, hmmmmmmmmmmmmm.

: Oops: : Cry: :( : Shock:
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Re: Computer inverter for home lighting backup




by phil59 » 10/12/22, 13:33

So, Christophe, no ideas?

Well, I called "a friend", should I try the 50-50?
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hmmmmm, hmmmmmmmmmmmmm, hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhmmmmmmmmm, huh, hmmmmmmmmmmmmm.

: Oops: : Cry: :( : Shock:
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Re: Computer inverter for home lighting backup




by Christophe » 10/12/22, 15:35

phil59 wrote:This is how the blocks were built, with the voltages taken in 2021

14S=18,83V, the assembly 12S=16,19V, the other assembly 14S=18,95V

All in series, without BMS, it's NiMh.

And I put the 2 blocks in // on the inverter.


It's rarely clear to you...

Does that mean you have a 1P40S config?

Check the voltage of each of the 40 cells...when you're charging...
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Re: Computer inverter for home lighting backup




by phil59 » 10/12/22, 19:11

It's impossible, it's all "packed", I can measure the 3 "thirds" of the block, it remains consistent, it drops to 42-44V during discharge, and charges up to almost 56V on 48V chargers, that I had with the batteries.

That's what's weird is that, after 3 hours, on the inverter, it didn't put even 0.1V.

Initially these are 1.2V, 13A, so 40 batteries at 13A, in theory, or 520Wh?

And on the batteries, I managed to pull, in total, more than 700Wh, in total, for the 2 in //.

So load incompatible with the inverter, or load of the inverter out of order, or?

On an inverter, the charge is always very slow, but in 3H, we should see a little something, normally.

I wonder, what would happen, if I left the 48V chargers on while in use....
I can add diodes on 48V chargers.
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hmmmmm, hmmmmmmmmmmmmm, hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhmmmmmmmmm, huh, hmmmmmmmmmmmmm.

: Oops: : Cry: :( : Shock:
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Re: Computer inverter for home lighting backup




by Christophe » 10/12/22, 19:47

: Shock: : Shock: : Shock:

Ben unpack it's almost Christmas!!! : Mrgreen:

With luck you will have 10 to 20% of faulty elements...

And also, try with another charger...
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Re: Computer inverter for home lighting backup




by phil59 » 10/12/22, 20:40

I do not understand.

With a 48V charger, the battery packs charge. Not with the inverter. I thought I was clear.

Afterwards, we don't know everything, and you may not know, I understand. But I thought I had said it all!
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hmmmmm, hmmmmmmmmmmmmm, hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhmmmmmmmmm, huh, hmmmmmmmmmmmmm.

: Oops: : Cry: :( : Shock:
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Macro
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Re: Computer inverter for home lighting backup




by Macro » 11/12/22, 08:39

Well... The charger part of your inverter is out of order.... And that's why the batteries of the inverter were too...
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Re: Computer inverter for home lighting backup




by phil59 » 11/12/22, 09:23

Macro wrote:Well... The charger part of your inverter is out of order.... And that's why the batteries of the inverter were too...


This is the most plausible solution.

I want to leave the 48V chargers plugged in at the same time on the batteries connected to the 'inverter, but I wonder what that will do...
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hmmmmm, hmmmmmmmmmmmmm, hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhmmmmmmmmm, huh, hmmmmmmmmmmmmm.

: Oops: : Cry: :( : Shock:

 


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