NEW products UM34(C) USB3.0 tester and NEW LD25 usb load

our new products UM34© USB 3.0 meter and USB load LD25 (25W, intelligence control ). For the old rules, new products are published, there is lowest price in 4 days , UM34 12.99 USD (normal price 16 USD), UM34C 16.98 USD (normal price 20 USD). LD25 8.99 USD (normal price 11 USD ), buying together will more cheaper, please check the link.
UM34© link: 14.33€ 42% OFF|RD UM34 UM34C für APP USB 3,0 Typ C DC Voltmeter amperemeter spannung strom meter batterie ladung messen kabel widerstand Tester|Spannungsmesser| - AliExpress
LD24 link 7.28€ 53% OFF|RD LD25 LD35 Usb schnittstelle Elektronische Last widerstand Entladung batterie test led anzeige fan einstellbare strom spannung 25w|Spannungsmesser| - AliExpress
UM34© video : https://youtu.be/zZCPJQrqKPU
A, UM34© is better than UM24©, same interface with UM25©, have USB 3.0 port.
B, only APP, not PC software, precision is better than UM24©, not better than UM25C,
C, LD24 is digital control USB load, have many protection(OVP,OPP,OTP) , can set the output state and current, big power 25w.
Thank you again for read so many thing, if you want to learn more , please check the page
This is our home page : https://rdtech.aliexpress.com/store/923042
Hope you like our APP and new products

Why did you drop PC software support on this device?

Are you planning on releasing UM35 as the successor to the 25 like the 24>34?

because we don’t let it complex , just want to replace UM24C

YES, we will design better tester than UM25, but now can’t confirm the time

Hello,
Any chance of interfacing Arduino + Bluetooth so I can get the values via Bluetooth? I would really like to get the values without an Android app.

RD tech,

How much longer till the UM35C is released? If you are not sure, please give me your best guess. Thank you.

Got this today from RDTech:

The LD35 and the UM25C:




Best UI feature so far: Rotatable Screen Display!

very good, thank you for your share

Hi RD tech and others.

Can this device be used to accurately measure battery capacity when charging a smartphone? Normally you would apply a constant load and discharge, however, this is not easy to do with a battery inside a phone.

It is impossible to measure exact battery capacity from input energy alone. One must assume the efficiency of the phone’s charging and consider if there are other power drawing component during the charging.

The best way would be using a clean power source that is relatively low on power, like 5V1A. The phone must be off and I would consider anywhere between 85-95% efficiency.

Hi friend , now there is not a device in the market to measure the capacity of the battery. we only have a way to measure power bank battery not directly

we have a formula to count the capacity of power bank