[Twointje]

I've made a PSU with 12-16V and 55A from a server power suply.
I've added also an voltamper device and noticed that with ignition on and engine off, it stays somewhere in 42-44A during flashing/coding.  
The car has 33ECUs so they are quite a lot(Hud/hu2 evo edc etc).
So a 50Amps PSU should be fine from my pov

So The MAAS 50 II would be good and the PS50SWIV Festspannungsnetzgerät 13,8V (9-15V), 50A LCD link:
https://www.komerci.de/shop/stromversorg...8v-50a-lcd would be good also.
What about the Telwin Doctor Charge 50 link :
https://www.telwin.com/en/prodotti/?id=807586

Thank everyone

[DNK76]

I made several power supplies myself,
from server power supplies with different powers
part in double configuration,
for safety, that if one breaks down, the other one will start working,
or Imax100A server power supply + 5A-25A charger Umax 14.8v,
you can create different configurations depending on who needs
powers always above
Imax = 100A
U = 12.8V- 14.8V

[Mikej0h]

I would consider MAAS SPS-50-II. I got it currently and it's working fine. Only issue I see is that it is only 50A constant and 55A max. Adjustable from 9-15V. If 50A is enough for you then it's pretty good option it costs ~150€. I'm currently considering getting a server PSU that can deliver 140A.

I've actually considered the by you recommended powersupply as well.
However, I've had contact with the manufacturer (please note that this unit is sold by different brands) - and that it was NOT advisable to use this product for programming.

The response I got (translated, as the conversation was in Dutch): "Our experience is that the battery doesn't always gets the 'big blows' in power draw and that this would use the safety too much - sometimes leading into blown fuses or worse"

But allot of peole are using this device the MAAS SPS-50-II , specially on the German forums like Motor Talks.
They are all happy with this device , i am considering the Telwin Doctor Charge 50  but asked here for some advice from peole who are using it bud sofar did not get any.

Please don't shoot the messenger .
I am aware that this specific device is used quite heavily - also for flashing/programming.
I'm just stating what the manufacturer stated, this was for me a reason not to buy the specific unit.

I just want to prevent people buy the MAAS and during a large draw of power burns out (and bricking anything in the process). These devices are expensive enough. Lets do it first time right...
I've not bought one yet, but came across the Telwin as well. That device does have a mode for programming and is therefore very suited for what we want to accomplish. I'm saving for the Doctor Charge 130 (625 EUR) - it's a double as expensive over the 50 (300 EUR), but does comply with what BMW states as requirements for flashing.

I will monitor this thread, as new options might become available too. But anything less than 70Amps would not be considered for me as newer cars also get more computers - hence the load will also increase.

[Twointje]

Mikej0h.
Do you really think this is nessesary? On the forum Motortalk there is a member milk101 he is quite some guy a real specialist in coding and flashing al BMW cars. He told me that the MAAS50 II is perfect enough for coding and flashing BMW cars , the steady 50 AMP the device can givve is enough to do the job, yes BMW specifications are different the say you need at least 70 AMP but that is just what BMW wants.
He never saw a car consuming more then 45 AMPs where everything thats sucks power is shut down while flashing the whole car. Yes if you are flashing cars every day it is better to get a more expensive unit but for the one that mostly just do some FDL coding and ones in a while flash a module or even the whole car the MAAS 50 II or the Komerci  PS50SWIV Festspannungsnetzgerät 13,8V (9-15V), 50A LCD would be good enough to do the job because you dont have to flash all modules at one time.

Why would i wanne spend almost 800 euro or more for a machine that i maybe use 1 time a month?

[Mikej0h]

@Twointje, well glad to hear the MAAS-50 is put to good use with others.
Based on the discussion I had with the manufacturer, it is just a device I would not recommend.
That it is proven to work well for others is great and I'm not judging anybody who bought & is using one.

The MAAS-50 and K-PO KPS 50 (same devices) are great value for what you get.
Others love to make something themselves, some just use a regular charger.
Let others decide for themselves what they do - as I said, I'm just the messenger.

My personal consideration is a bit different and my preference would be to go for a bit beefier one like the Telwin's. Just don't feel like risking to bricking one or more computers in my recent 5 series.

[weby]

GYS GYSFLASH 100

[Jumper]

My personal advice is to use a BMW approved device. For starters I can recommend a CTEK MXTS 40 or a Telwin Doctor Charge 50. If you want to work professionally, you will need a Deutronic DBL 1200 / 1600, Eltek MultiCharger 900 / 1500, GYSFLASH 100 or a CTEK MXTS 70/50. I meyself have an Eltek MultiCharger 1500 with the BMW firmware for optimal control voltage. A MAAS power supply is not a good advice for me.

[Temrotec]

My personal advice is to use a BMW approved device. For starters I can recommend a CTEK MXTS 40 or a Telwin Doctor Charge 50. If you want to work professionally, you will need a Deutronic DBL 1200 / 1600, Eltek MultiCharger 900 / 1500, GYSFLASH 100 or a CTEK MXTS 70/50. I meyself have an Eltek MultiCharger 1500 with the BMW firmware for optimal control voltage. A MAAS power supply is not a good advice for me.

Only for occasional use !! (rock solid computer server PSU modding by experienced electronics hobbyists - ). Workshops should look elsewhere and don't start a discussion about cost benefits because little or no hobby is cost effective.

Greetings,

https://cartechnology.co.uk/showthread.p...#pid231408

[Twointje]

@Twointje, well glad to hear the MAAS-50 is put to good use with others.
Based on the discussion I had with the manufacturer, it is just a device I would not recommend.
That it is proven to work well for others is great and I'm not judging anybody who bought & is using one.

The MAAS-50 and K-PO KPS 50 (same devices) are great value for what you get.
Others love to make something themselves, some just use a regular charger.
Let others decide for themselves what they do - as I said, I'm just the messenger.

My personal consideration is a bit different and my preference would be to go for a bit beefier one like the Telwin's. Just don't feel like risking to bricking one or more computers in my recent 5 series.

Mike0h.

I got myself the Telwin Doctor Charge 50 and i must say for me this thous the job wel , i cant put it in diagnostic mode or supply mode and regulated the voltage from 12 volt up til 15 volt and regulated the AMP up to 40 AMP ( I know 40 amp is not that much but i noticed that with the ignition on and the lights on and the AC fan on manual on MAX my F10 draws about 30 amp. If i turn off the AC it drops till 20 amp , i have bin playing wit E-Sys fpr about 2 hours without stopping and coding several things and the car never draw more then 18 to 20 Amp. Then i flashed my NBT module to see waht would happen and if i leave the AC of the car never draw more then 30 AMP flashing the NBT module. So for me this is enough because i would never flashed the intire car in one time , i would prefere to flash the models seperatly maybe 2 at the same time. So for me the Telwin Doctor Charge 50 is good enough and i got in sale for only 230 euro instead of 330 euro. Thanks for the good advice.                             Best regards.

[Twointje]

Update on the Telwin Doctor Charge 50.
Todat i returned the Telwin Doctor Charge 50 back because i was not happy with the fact that with my ignition on and the lights on and the AC on manual MAXIMUM force the car draws 30 AMP from te battery but when i then put on the radio ( I updated my BMW normal sound system with a GLADEN BOXMORE | BMW DSP ) The car draws 65 AMP and the Telwin would drop the voltage from 13.8 volt to 13.2 volt. This made me rethink everything and i decided to return the Telwin Doctor Charge 50 because i am scared to brikk my F10 when flashing some module's or the whole car the Telwin Doctor Charge 50 was now in promotion and i payed 230 euro normaly the price is between 300 and 330 euro.So now i bought the BIGG brother of the Telwin Doctor Charge 50 and that is the Telwin Doctor Charge 130 and this charger charges all kind of batteries even Lithium batteries and has a diagnostics mode and supply mode up till 120 AMP, and now i tried everything that i did with the Charge 50 and with the ignition on , the lights on the AC on manual  Maximum and my radio on the car draws 65 AMP , the Charge 130 is set in diagnostics on 13.8 volt and  the voltage stays stabel on the 13.8 volt . This is better for my stade of mind when flashing my car, but the price was 500 euro.




Best regards.