ZK-SJ30 30A dcdc model with better efficiency ?

[RoboDurden]

There is a 30A version with the same LCD module, so it might be compatible with this project.

22,59€ 39%OFF | ZK-SJ30 700W High Power Auto Boost Power Module Synchronous Rectifier 30A Solar Charging MPPT https://a.aliexpress.com/_EHqaZRz

I am not satisfied with the efficiency of the 20A dcdc. At best I verified an efficiency of only 92%. A really boring video with lots of input output measurements that I do not think worth uploading to YouTube..

@I-hate-2FA , what would this 30A dcdc module would cost on these platforms ?

https://my.world.taobao.com/item/789873368119.htm

Usd $10 ? But what about shipping ??

https://www.ruten.com.tw/item/show?22420585284046

??

I will order two modules on AliExpress and test the efficiency. Hopefully they have better mosfets..

The one customer feedback sounds promising:

(I will finalize v3 in the next two weeks..)

[I-hate-2FA]

is this one also buck-boost topology or other because the inductor is tiny for its power, i dont believe the specs at all and what main chip is it using

the module cost $25usd with display or $20 without, idk abt the shipping, it is viewed with china version of the website