DMM battery question

[Rick Law]

I prefer to use rechargeable Eneloops.

And what type of rechergeable 9V batts You can reccomend for DMMs like 87V?
NiMH vs Li-Ion?

I recommend Tenergy Centura 9V (NiMH-LSD Rechargeable).  I did a mini review long time ago (2013).  The pair I used back then is still going strong today.  I have since acquired more Tenergy Centura9V's and I am very satisfy with Tenergy performance.  They are displacing my 9V primaries as they expire/died.

It is only 200mAH, but there is a number of reasons to go with that, 7-cell instead of 6, LSD, etc.  Most of all, I can use a freshly recharged cell each time I do long duration logging because I know what it will run for X hours continuous -- whereas a larger mAH primary that has been in used for a while might have far less left and I would not know.

You will find more info about that battery in my mini review here:
_{^{https://www.eevblog.com/forum/reviews/tenergy-centura-9v-and-tn141-mini-review/}}

Even with AA/AAA, Tenergy is now my day-to-day use stuff and are beginning to replace my Eneloop (AA) I keep for emergencies.

By the way, two more things:
- Take particular note on the length of the battery compartment (see my review).  They are 7 cells, while overall length (with buttons) is the same, the body is a bit longer.
- Do make sure you order from reputable suppliers.  I would not be surprised if you find fake Tenergy cells out there.

[Russ]

I prefer to use rechargeable Eneloops.

And what type of rechergeable 9V batts You can reccomend for DMMs like 87V?
NiMH vs Li-Ion?

I recommend Tenergy Centura 9V (NiMH-LSD Rechargeable).  I did a mini review long time ago (2013).  The pair I used back then is still going strong today.  I have since acquired more Tenergy Centura9V's and I am very satisfy with Tenergy performance.  They are displacing my 9V primaries as they expire/died.

It is only 200mAH, but there is a number of reasons to go with that, 7-cell instead of 6, LSD, etc.  Most of all, I can use a freshly recharged cell each time I do long duration logging because I know what it will run for X hours continuous -- whereas a larger mAH primary that has been in used for a while might have far less left and I would not know.

You will find more info about that battery in my mini review here:
_{^{https://www.eevblog.com/forum/reviews/tenergy-centura-9v-and-tn141-mini-review/}}

Even with AA/AAA, Tenergy is now my day-to-day use stuff and are beginning to replace my Eneloop (AA) I keep for emergencies.

By the way, two more things:
- Take particular note on the length of the battery compartment (see my review).  They are 7 cells, while overall length (with buttons) is the same, the body is a bit longer.
- Do make sure you order from reputable suppliers.  I would not be surprised if you find fake Tenergy cells out there.

   I recently purchase a set of Tenergy AAA cells. I was not aware that they were not LSD type batteries. But they seem fine. I haven’t had them long.

Russ

[Rick Law]

... ...
   I recently purchase a set of Tenergy AAA cells. I was not aware that they were not LSD type batteries. But they seem fine. I haven’t had them long.

Russ

Not all Tenergy cells are LSD cells.  You have to check the model.  The Centura line is LSD.  They have Centura AA/AAA (LSD) as well.

I use the Tenergy Centura line as lower cost Eneloops.  Not as good but more than good enough  and more cost effective.

[6PTsocket]

Duracell is very bad a leaking in my experience, other brands, even cheap ones, are not that bad.

I had some Kirklands (Costco rebranded Duracells) and virtually every one of them leaked either in service or before use. On the other hand, the Chinese alkaines from Harbor Freight have yet to leak and seem to last fine. Leakage seems to be an inherent problem with alkalines.

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[6PTsocket]

AA and AAA are more widespread, so others feel 9V are no longer necessary.  There are many power management circuits that can easily take the lower 1.5V of an AA, or multiples of them, and boost them to whatever is necessary. Alkaline AAA typically 1Ah and AA 2Ah capacity, which will reduce the need to change batteries and overall, reduce waste production.

That said, AA/AAA alkaline manufacture has become so poor, they are likely to leak and damage the internals particularly with the reduced need to change them frequently. 

9V alkaline very rarely leak, because they are double housed but they are typically only 0.20.50Ah  [my error, 0.250Ah is NiMH 9v as another posted] , and also cost more, and may require changing more often.

AA, AAA, and 9v exist in Lithium primary and secondary chemistry, as well as secondary NiMH, these cells rarely if not ever leak and all have much great Ah for longer life and should be your go-to chemistry to replace alkaline in whichever DMM you choose.

NiCds and NiMH batteries do not hold a charge that well. Lithium is much better. If you use the meter daily and don't mind frequently charging batteries, I guess they are OK. An alkaline has a 10 year shelf life, if it doesn't leak. Some brands are,worse than others.

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[HKJ]

NiCds and NiMH batteries do not hold a charge that well.

Modern NiMH can hold a charger for 10 years.

[6PTsocket]

NiCds and NiMH batteries do not hold a charge that well.

Modern NiMH can hold a charger for 10 years.

I think you are thinking of alkaline batteries. A quick search came up with the figure that NiMh cells can loose up to 40% of their charge in the first month, depending on temperature and other factors. I found this figure in several sites. You are so far from the generally available info that I would appreciate a link to where you got your info. NiMh self discharges even faster than NiCd. That is one if the reasons that they never caught on with power tool manufacturers. The only company I remember using them was Makita.

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[bd139]

https://en.wikipedia.org/wiki/Self-discharge#Typical_self-discharge_by_battery_type

Look at low-self-discharge NiMh.

[HKJ]

I think you are thinking of alkaline batteries. A quick search came up with the figure that NiMh cells can loose up to 40% of their charge in the first month, depending on temperature and other factors.

I did not, old style NiMH could not hold their charge, but new style NiMH can. The are often called "Precharged".
The best known brand is Eneloop (They are some of the best NiMH around).
You can check Panasonics catalog: https://main.panasonic-eneloop.eu/sites/default/files/Catalogue_eneloop_ENG_2017_DEF_LR.pdf
It says 70% remaining energy after 10 years.

[retiredcaps]

NiCds and NiMH batteries do not hold a charge that well.

Modern NiMH can hold a charger for 10 years.

I think you are thinking of alkaline batteries. A quick search came up with the figure that NiMh cells can loose up to 40% of their charge in the first month, depending on temperature and other factors. I found this figure in several sites. You are so far from the generally available info that I would appreciate a link to where you got your info. NiMh self discharges even faster than NiCd. That is one if the reasons that they never caught on with power tool manufacturers. The only company I remember using them was Makita.

Sent from my SM-G900V using Tapatalk

HKJ knows what he is talking about

https://lygte-info.dk/

[Rick Law]

NiCds and NiMH batteries do not hold a charge that well.

Modern NiMH can hold a charger for 10 years.

I think you are thinking of alkaline batteries. A quick search came up with the figure that NiMh cells can loose up to 40% of their charge in the first month, depending on temperature and other factors. I found this figure in several sites. You are so far from the generally available info that I would appreciate a link to where you got your info. NiMh self discharges even faster than NiCd. That is one if the reasons that they never caught on with power tool manufacturers. The only company I remember using them was Makita.

Sent from my SM-G900V using Tapatalk

HKJ knows what he is talking about

https://lygte-info.dk/

+1 to that!

HKJ is my trusted source of info.  Whenever I look for battery/charger, he (his website) is my number 1 source.