Risk of damage to the battery or HPS140i

Instruments HPS140 Handheld Pocket Oscilloscope
1

greeting:

  1. Is it necessary to remove the Ni-MH batteries?
    for long life of the batteries, while using the adapter 9Vdc. There is risk of damage HPS140i not operate without batteries using 9Vdc adapter?

  2. for long life Ni-MH battery:
    a)must be used to completely discharge HPS140i, then load X7 hours with USB adapter?
    b)you can charge the battery from adapter 9VDC HPS140i off? or only possible with USB adapter?

risk of damage to the battery or HPS140i by these methods?

thank you!

2

It is not necessary to remove the batteries when using the USB or 9VDC adaptor.
The battery charges from either the USB or a 9VDC adaptor.
It is not necessary to completely drain the batteries, NiMH suffer less from memory effect than NiCd batteries.

3

[quote=“VEL417”]It is not necessary to remove the batteries when using the USB or 9VDC adaptor.
[/quote]

thank you very much for the reply …

Is it possible to use the HPS140i without NI-MH battery? (without NI-MH battery
and with adapter 9 Vdc/200mA)

risk of damage HPS140i by this method?

a family member, has brought me the HPS140i from Switzerland-Zurich (Distrelec).

in December bring more units to my residence for students of electronic engineering.

for that reason the battery care …

4

Should work without the battery.

5

thank you very much for your attention:

VELLEMAN team anyone can do this test? (voltage applied directly from 9VDC Adaptor without battery)

I am afraid to apply the voltage 9VDC Adaptor :frowning:

thank you very much!!!

6

As mentioned, it works fine.

7

confirmed by yourselves!!!
thank you very much for the attention :wink: