Rectifier Huawei R4850G2 48V 42~58V 3000w

Batteries, Chargers, and Battery Management Systems.
celioregoli   1 µW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by celioregoli » Feb 27 2021 6:50pm

Irling wrote:
Jan 26 2021 2:27am
Can you please tell me if I can use 3 modules 0-140 volts for serial connection? I need about 400 volts to charge the 96S battery.. I am worried that the diode bridge or output transistor may burn out :bolt:
we want to do the same thing, except that I have 225v 54s, the engineer tells me that it can be done with diodes in counterphase
the huawei to be able to reach 120v it takes a hardware modification, the switching frequency must be changed, they sell the kits on taobao, or already modified. so to make 400v you need 4 to 100v.
I believe that if you connect a charger every 24 cells, it is safer

frank_zero   1 mW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by frank_zero » Mar 20 2021 4:07pm

frank_zero wrote:
Sep 28 2020 1:58pm
aansluiting.jpgWhat is the type or connector for the start plug and the communcation , can plug ?
https://www.ebay.com/itm/5-Pair-2Pin-Ma ... Y7OMHgpr50

are the small connectors for the start and can bus connection
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frank_zero   1 mW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by frank_zero » Mar 20 2021 4:12pm

rigmo wrote:
May 26 2020 3:14pm
IMG_2637rez.pngHI NEWS
Display monitoring of huawei and emerson PSU.

control boards
USB serial port cable
Huawei and Emerson's control board PCBA is the same, but not universal, the software communication protocol is different.
Rigo or some one els can you tell us how to connect those control boards >
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frank_zero   1 mW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by frank_zero » Mar 20 2021 4:30pm

CHA_LY wrote:
Nov 14 2020 3:38pm
Hi all
I still waiting for some info how to permanently adjust the voltage of my R4850G2 to 50V using the chinese controller received on the meantime.

No info at all was supplied.

I know how to connect the board - but how to permanently adjust the voltage.
I do NOT want to change the curent limit.

Thanks
Charly
SEE

viewtopic.php?f=14&t=86038&start=25#p1441995

jairbj   1 mW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by jairbj » Jun 04 2021 9:02am

rigmo wrote:
May 26 2020 3:14pm
Display monitoring of huawei and emerson PSU.

control boards
USB serial port cable
Huawei and Emerson's control board PCBA is the same, but not universal, the software communication protocol is different.
Hi friend, could you share the communication protocol for Emerson's PSU?

meelky   1 µW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by meelky » Jun 16 2021 5:27am

vasitse wrote:
Oct 03 2019 12:52am
rigmo wrote:
Feb 27 2019 5:28pm
I have direct contact of PCB controller builder from china.. 任星星
Hi! Can you provide details? Thank you!

meelky   1 µW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by meelky » Jun 16 2021 5:33am

Hi,

From where I can source these type of back plane PCB as attached?

Meelky
meelky@yahoo.com
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djgrazzy   1 µW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by djgrazzy » Jun 27 2021 5:14am

meelky wrote:
Jun 16 2021 5:33am
Hi,

From where I can source these type of back plane PCB as attached?

Meelky
meelky@yahoo.com
I noticed this mentioned the comments
https://www.ebay.co.uk/itm/163584839215
On this video
https://youtu.be/U9LE8FThbPU

rigmo   1 mW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by rigmo » Jul 17 2021 7:30am

Hi
Sorry for late reply
I have two pcb control boards for sale.
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marast   1 µW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by marast » Jul 26 2021 10:04am

Please can anyone advise me what is the possibility of a serial connection of 2pcs?
Thanks, Mark.

frank_zero   1 mW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by frank_zero » Aug 24 2021 10:59am

Hello does any one have 1 or more controllers for sale ?

the can bus controller for the

Rectifier Huawei R4850G2 48V 42~58V 3000w

many thanks Frank

you can send me a PM message.
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can bus controller 1.jpg
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Silvaticus   10 W

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by Silvaticus » Aug 24 2021 12:10pm

frank_zero wrote:
Aug 24 2021 10:59am
Hello does any one have 1 or more controllers for sale ?

the can bus controller for the

Rectifier Huawei R4850G2 48V 42~58V 3000w

many thanks Frank

you can send me a PM message.
I would like to join to the request. Since I was having difficulty purchasing this item from TaoBao.

frank_zero   1 mW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by frank_zero » Aug 26 2021 11:05am

How to order a control board for can bus update 26 aug 2021

like the one in the picture

i made a account on

https://parcelup.com/

that is the old (https://tbfocus.com)


you can pay whit paypall '
or credit card

i then send a message to

https://parcelup.com/live-support/

can you please this item in my shopping basket:


https://market.m.taobao.com/app/idleFis ... 5948826876

1 or 2 days later they will send you email
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Last edited by frank_zero on Aug 27 2021 10:56am, edited 1 time in total.

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Silvaticus   10 W

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by Silvaticus » Aug 26 2021 4:59pm

frank_zero wrote:
Aug 26 2021 11:05am
How to order a control board for can bus update 26 aug 2021
Thanks. I will try. It's just that when I was looking for an intermediary, none of them answered, and after reading the reviews that most of them communicate only until the moment of money transfer. After that, they may forget about you for a month. I then decided not to mess with them.

jairbj   1 mW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by jairbj » Aug 26 2021 8:47pm

Silvaticus wrote:
Aug 26 2021 4:59pm
frank_zero wrote:
Aug 26 2021 11:05am
How to order a control board for can bus update 26 aug 2021
Thanks. I will try. It's just that when I was looking for an intermediary, none of them answered, and after reading the reviews that most of them communicate only until the moment of money transfer. After that, they may forget about you for a month. I then decided not to mess with them.
I bought there using superbuy.com

Everything was done using their website. Their service plus shipping to Brazil had cost about U$ 25.

frank_zero   1 mW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by frank_zero » Aug 26 2021 11:13pm

I always have a good and fast communication whit
Taobao FOCUS Team
https://tbfocus.com

Taobao FOCUS Support [https://tbfocus.com/support]

but is only the 2e time im buying 2 of those can bus controllers.

1e time at the begin of this year.

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Silvaticus   10 W

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by Silvaticus » Aug 27 2021 8:04pm

Thank you guys again. The last time I ordered what I needed on Alibaba. Luckily it was found there.

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by JackFlorey » Aug 30 2021 5:36pm

Hi all.

I have a 4850G2 here and working. (Programmed via CAN for my voltage and current, which is 54.6 volts and 20 amps.) However I notice that on startup it initially goes to maximum current (~26 amps at 120VAC in) before it backs off to 20 amps after about one second. I am worried that if I connect to 240 volts it will go to 56 amps and fry wiring and batteries.

Has anyone else seen this? Any ways around it? I could build some gadget to gradually ramp voltage up to 54.6 volts over 10 seconds or something but that seems like a lot of work.

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by Darren2018 » Aug 30 2021 6:08pm

JackFlorey wrote:
Aug 30 2021 5:36pm
Hi all.

I have a 4850G2 here and working. (Programmed via CAN for my voltage and current, which is 54.6 volts and 20 amps.) However I notice that on startup it initially goes to maximum current (~26 amps at 120VAC in) before it backs off to 20 amps after about one second. I am worried that if I connect to 240 volts it will go to 56 amps and fry wiring and batteries.

Has anyone else seen this? Any ways around it? I could build some gadget to gradually ramp voltage up to 54.6 volts over 10 seconds or something but that seems like a lot of work.
The R4850G2 generally overshoots by 5A, it's completely normal. If you disconnect the load and then immediately reconnect it the overshoot decreases. I first thought that it was the output capacitor voltage but it is always by 5A so obviously that isn't the reason. As long as the load is not too sensitive or fused I don't think it is a problem. Maybe someone with more experience can explain exactly why it does this?

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by JackFlorey » Aug 30 2021 10:33pm

Darren2018 wrote:
Aug 30 2021 6:08pm
The R4850G2 generally overshoots by 5A, it's completely normal. If you disconnect the load and then immediately reconnect it the overshoot decreases. I first thought that it was the output capacitor voltage but it is always by 5A so obviously that isn't the reason. As long as the load is not too sensitive or fused I don't think it is a problem. Maybe someone with more experience can explain exactly why it does this?
Does that suggest that if used at 240 volts it would still overshoot to 25A and not 56 amps? If so that's good news.

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by Darren2018 » Sep 01 2021 4:04am

JackFlorey wrote:
Aug 30 2021 10:33pm
Darren2018 wrote:
Aug 30 2021 6:08pm
The R4850G2 generally overshoots by 5A, it's completely normal. If you disconnect the load and then immediately reconnect it the overshoot decreases. I first thought that it was the output capacitor voltage but it is always by 5A so obviously that isn't the reason. As long as the load is not too sensitive or fused I don't think it is a problem. Maybe someone with more experience can explain exactly why it does this?
Does that suggest that if used at 240 volts it would still overshoot to 25A and not 56 amps? If so that's good news.
Yes.

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JayKhan   100 µW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by JayKhan » Oct 16 2021 12:50pm

HI everyone, just made an account, you guys discussed everything very nicely. thank you
I purchased few power supplies (Used ones at 14~15$ each) , searching on YouTube, I found one guy made induction heater power supply with this same power supply and then on google search I came here.
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JayKhan   100 µW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by JayKhan » Oct 16 2021 1:04pm

For voltage adjustment and current limit, I purchased that CANbus module from taobao via parcelup (Taobao FOCUS becomes Parcel Up) by following the same process which was shown in YouTube video. and received it in 10 days in Pakistan. total cost 37.4$ for 1 module (psu was 14$ and module 37$ lol)
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JayKhan   100 µW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by JayKhan » Oct 16 2021 1:23pm

to connect CAN module and power switch, I added 6 pin JST connector on the free space of PSU.
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JayKhan   100 µW

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Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

Post by JayKhan » Oct 16 2021 1:30pm

Voltage adjustment and current limit tested with module. I have noticed few things, one is that PSU works best between 50-55v, other then that, at any voltage PSU fan spins really fast, i don't know why. (without any load)
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