Overview: best rectifiers for charging (voltage mod) - Eltek/Delta/Huawei/Emerson/Vertiv

[Tomblarom]

I couldn't find anything like this and made this for myself to compare common telecommunication PSUs / rectifiers. Trying to update this frequently. Used datasheets attached. Enjoy!

Eltek

• CAN / I²C: https://endless-sphere.com/forums/viewtopic.php?f=14&t=71139

  Model        Power   Size               Voltage        C@48v   Eff.    Weight   Public Protocols
 ------------ ------- ------------------ -------------- ------- ------- -------- ------------------
  48/1000 HE   1000W    72.0×41.5×217.0   43.5 - 57.6V   20.9A   95.5%    850g    CAN, I²C
  48/1800 HE   1800W    72.0×41.5×217.0   43.5 - 57.6V   37.5A   96.0%    850g    CAN, I²C

Emerson/Vertiv

• CAN: https://endless-sphere.com/forums/viewtopic.php?f=14&t=114785

  Model        Power   Size               Voltage        C@48v   Eff.    Weight   Public Protocols  
 ------------ ------- ------------------ -------------- ------- ------- -------- ------------------ 
  R48-1000e3   1000W    52.0×41.0×152.0   42.0 - 58.0V   20.8A   95.4%    600g    Nothing yet
  R48-2000e3   2000W    84.5×41.0×252.5   42.0 - 58.0V   42.0A   96.2%   1130g    Nothing yet
  R48-3000e3   3000W    84.5×41.0×330.0   42.0 - 58.0V   62.5A   96.0%   2000g    Nothing yet

ImPow

• CAN: https://endless-sphere.com/forums/viewtopic.php?f=14&t=114786&p=1697370

  Model       Power   Size               Voltage       C@48v   Eff.    Weight   Public Protocols  
 ----------- ------- ------------------ ------------- ------- ------- -------- ------------------ 
  R481200H1   1200W    70.3×42.5×253.0   42.0 - 58.0   25.1    96.0%   1000g    CAN               
  R482000H1   2000W    70.3×42.5×286.0   42.0 - 58.0   41.6    95.0%   1300g    CAN               
  R483000H1   2000W   106.0×42.5×286.0   42.0 - 58.0   62.5    96.0%   1900g    CAN

Huawei

• Voltage mod: https://www.znds.com/tv-1170402-1-1.html
• CAN/Voltage mod: https://endless-sphere.com/forums/viewtopic.php?f=14&t=86038
• CAN: https://github.com/craigpeacock/Huawei_R4850G2_CAN
• CAN: http://bbs.38hot.net/thread-101073-1-1.html

  Model     Power   Size             Voltage       C@48v   Eff.    Weight   Public Protocols  
 --------- ------- ---------------- ------------- ------- ------- -------- ------------------ 
  R4850G2   3000W   105×40.8×281.0   42.0 - 58.0   62.5A   96.0%   2000g    CAN

Delta

• Voltage mod: https://www.bilibili.com/video/BV1RM4y1A7p1
• Voltage mod: https://www.bilibili.com/video/BV1t7411j7u1

  Model        Power   Size               Voltage        C@48v   Eff.     Weight   Public Protocols
 ------------ ------- ------------------ -------------- ------- -------- -------- ------------------
  ESR-48/56    2880W   125.0×41.0×269.9   40.0 - 59.0V   55.0A   91.0%    2000g    Nothing yet

--> You can find a lot more results on mods using "model + 改可调" which means "voltage mod".

 

[john61ct]

WOW excellent resources, thanks so much for contributing this!

48V is a sweet spot for "backbone" distribution, minimizes distribution losses using cables with lower currents bussed throughout the system using smaller, less expensive conductors

then using quality DC-DC chargers & converter modules close to their loads as secondary voltage sources.

 

[Tomblarom]

48V is a sweet spot for "backbone" distribution

And for charging Li-Ion. :wink: Up until 14S (58.8v).

 

[rdsantos]

Have you tested ZTE ZXD3000 or ZXD4000 communication via can-bus

 

[j bjork]

A link to a useful post on the forum:

42-60V 0-38A ZHONHEN APR48-3G charger PSU modification voltage and current adjustment

Hello everyone, I am an electronics enthusiast in China. I also like to play electric bicycles and yearn for a free life. However, it is illegal to modify electric bicycles in China. We cannot even discuss this topic. China's electric bicycle modification forum has been forced to close, so I can...

endless-sphere.com

 

[BH4SKM]

Delta

• Voltage mod: 台达ESR4856改装0-120V教程DELTA ESR 48/56调压调流，开关电源调压调流可调电源数显电源，台达4850，通信电源，改可调电源万能充电器_哔哩哔哩_bilibili
• Voltage mod: 台达4856AC开关电源改调压调流可调电源0-60V/50A或0-120V/25A_哔哩哔哩_bilibili

  Model        Power   Size               Voltage        C@48v   Eff.     Weight   Public Protocols
 ------------ ------- ------------------ -------------- ------- -------- -------- ------------------
  ESR-48/56    2880W   125.0×41.0×269.9   40.0 - 59.0V   55.0A   91.0%    2000g    Nothing yet

Hello, this video was posted by me. There are two options, one is 0-60V, 0-50A; the other is 0-120V, 0-25A. Last month I announced the Zhongheng APR48-3G solution 42-60V, 0-38A

 

[daudo2024]

Hello, can you make the model?emerson epw30-48a-E,Thank you

 

[Mohammed hmoo]

 

[Mohammed hmoo]

Hi how reduce output voltage for dpr2900b ?

 

[daudo2024]

Xin chào, bạn có thể làm mô hình không? Emerson epw30-48a-E, Cảm ơn bạn

K,No one helps