Products > Test Equipment
New EEVblog BM786 Multimeter
fabrizio_fabrice:
--- Quote ---Ni-Zn are no more expensive than Ni-MH, they just have a lower mAH capacity, though obviously this is offset somewhat by the higher nominal cell voltage. Overall they're probably around 10% lower in terms of mWH.
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I appreciate you mentioning these, I wasn't familiar with them. I got suspicious when I saw the change in rating method. HKJ wrote they specify in Wh, "probably to hide the fact that they has less capacity than NiMH batteries".
What is the advantage of higher cell voltage if used in a device like the BM786, if it down-regulates to 3.5 v? If they have less total capacity, the higher voltage wouldn't translate into better run-time.
OTOH, if you have drones, their better energy density would be a real help!
There's a discrepancy between Wikipedia: "they can be discharged to almost 100%, and recharged without problems" vs. HKJ's statement that they have a rather short lifetime because "they are over discharged when used as replacement for alkaline or NiMH cells." What's the reality? Over-discharging is particularly likely if they're down to near-zero by the time the device begins to noticeably misbehave.
I agree about Li-I,but it's not about throwing them away. It's about my home going up in flame. I want to buy from a reputable company with lots to lose. Even so, Samsung had to get stung, first, didn't they?
I don't know how to fairly compare costs. Can you recommend a brand that has established a reputation for reliability and durability that's comparable to Eneloops?
EEVblog:
--- Quote from: fabrizio_fabrice on January 06, 2021, 11:05:38 pm ---What is the advantage of higher cell voltage if used in a device like the BM786, if it down-regulates to 3.5 v? If they have less total capacity, the higher voltage wouldn't translate into better run-time.
--- End quote ---
There is very little capacity in the higher terminal voltage batteries at the high voltage point, the voltage drops pretty quickly under load.
EEVblog:
--- Quote from: LarryS on January 06, 2021, 04:33:18 pm ---Dave does not have a reply banner on his posts. Thus, I could not "wish' he did have a LCR-ESR meter in his portfolio.
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I'd like one, but it's hard find something good without an already well established distribution chain and low prices.
Brymen works because they have pretty horrible marketing and distribution in a lot fo the world, and the margins are good, so they are winners for me.
If anyone knows of a suitable one on the market please let me know, I do want to expand my product portfolio.
EEVblog:
--- Quote from: joeqsmith on January 06, 2021, 05:39:36 pm ---As I mentioned during the last video, I'm just surprised that the BM235's price did not drop. No doubt the 235 is very robust but outside of using it for some basic electrical work, I wouldn't have a use for it. With only a $25 spread, I would hands down buy the 786.
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Sure but everyones needs are different.
When I list the BM786 on amazon I'll see if the BM235 sales drop, if they do then I'll adjust the price. I sell a ton of BM235 on amazon. Could actually take the BM786 substantial time to build up the same search ranking.
--- Quote ---The 78x series fills a void IMO for people wanting a robust well built meter with some basic features for electronics but can't afford $200+.
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Yep, that's what I thought too when they first proposed it. I'm fairly confident it'll be a winner. Have just ordered another batch.
FYI Brymen pitched me the BM836/839 and sent me samples but I turned those down as they didn't have the same value proposition, so I waited an extra year for the BM786
BU508A:
--- Quote from: EEVblog on December 31, 2020, 04:28:03 am ---If anyone knows of any decent test gear that isn't being marketing or distributed well, let me know though. I do want to expand the product portfolio.
--- End quote ---
Dave, I've forwarded your request to the TEA thread. Maybe those folks have some ideas ... ;D ;D
https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/msg3403880/#msg3403880
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