Products > Test Equipment
Battery options for test meters (Brymen)
<< < (3/6) > >>
rsjsouza:

--- Quote from: pope on November 09, 2022, 09:36:07 am ---Thank you. I'll look into it. So, the IKEA LADDA are suitable for the brymen 869s?

EDIT: Just saw that the 869s needs pp3 9V battery. Any recommendations?

--- End quote ---
Despite 9V batteries can leak as well, they have much less risk of leakage as they have more shielding around them (the external housing is an extra layer of protection.
wraper:

--- Quote from: monkey_magic on November 08, 2022, 11:41:05 pm ---I've tried Eneloops, which seem to work OK for the 257s despite the specification of a min of 2.5V

--- End quote ---
Where did you get 2.5V figure? Specification says it displays low battery <2.3V, which is OK for NiMH as voltage drops below 1.2V only after >80% of the capacity was spent.
EDIT: I guess you took it from BM079 spec which has 2.5V and 2.85V (capacitance and frequency) low battery spec. WTF Brymen was thinking? 2.85V low battery is a broken design not suitable for alkaline batteries. OK-ish for lithium primary cells which cost about the same as NiMH but are single use.

--- Quote ---Unfortunately the clamp meter requires a minimum of 2.85V for Capacitance and Frequency and displays low battery.
--- End quote ---
That's just stupid. It's 1.425V per cell, which means alkaline batteries will be out of spec after 5-10% discharge from full capacity.
multiJ:
Also some good info on multimeter batteries in this thread

https://www.eevblog.com/forum/testgear/which-multimeter-should-i-get/msg4493059/#msg4493059
monkey_magic:
Well it is good to know it is not just me that worries about such things!
Thanks for all the replies.

For those using Lithium Energizers, have you encountered any of these supposed issues of cells suddenly dying?
I've seen the rumour on several forums now, so I'm unsure if there is anything to it. For me they work out about the same price as the eneloops, so pretty pricey option for a disposable cell, especially if you don't actually get to use it.

Showing my ignorance here, but I'd never heard of Ni-Zn - sounds like they could have been the ideal solution, but on further research it does seem like they can be quite fragile.

I believe the IKEA LADDA are either the Eneloop Pro or Lite - for me they work out the same price as the original white eneloops, so I just buy them instead.

The 2.5 and 2.85v figures are taken from the Brymen spec sheet. I haven't tested the threshold at which the low battery warning comes on, so I have just assumed the figure they quoted is correct.
However, the 257s didn't show any low battery running on two eneloop cells @ ~1.28V so that may be the best option for it.
The 079 did show low battery warning with Capacitance and Frequency modes on the same eneloop cells, so I assume it does actually need >2.85V
wraper:

--- Quote from: monkey_magic on November 09, 2022, 01:26:51 pm ---However, the 257s didn't show any low battery running on two eneloop cells @ ~1.28V so that may be the best option for it.

--- End quote ---
Because it has 2.3V low battery spec in the datasheet (1.15V per cell), not 2.5V. http://www.brymen.com/images/ProductsList/BM250s_List/BM250s_Catalog.pdf
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod