Can I use Energizer Ultimate Lithium batteries in my DMMs? - Page 1
Forum section: electronics / projects

author: splitzzzzz
author_rank: Contributor
timestamp: December 06, 2018, 08:40:45 am
content: Hi all.I have googled and can't find a definitive answer to this.I have various DMMs and measuring devices which use "AAA", "AA" or "9V" batteries Alkaline batteries. These devices are all only used occasionally and I want to replace the Alkaline batteries with Lithium (1.5V non-rechargable) ones to get better shelf life but mainly to avoid any battery discharge through lack of use.My Fluke 28ii uses 3 x "AA". The rear battery hatch and user manual specifically state only to be replaced with Alkaline equivalents and I quote "MSHA approved for use with three Energizer P/N E91 or three Duracell P/N MN1500 1.5 volt, “AA” alkaline batteries only." My 87V uses 1 x 9V but just says Neda 1604 or 6LR61 but doesn't specify must be Alkaline?Some online info says using Lithium batteries might harm some devices but I cannot understand why?I mean Lithium have a better shelf life, better mAh capacity but are still 1.5V right?I'm happy to pay the extra expense for the Lithium for the reasons stated but don't wanna ruin my DMMs in doing so!Thanks in advance for any advice!Cheers

author: Muttley Snickers
author_rank: Unknown
timestamp: December 06, 2018, 09:04:38 am
content: Quote from: splitzzzzz on December 06, 2018, 08:40:45 amFrom my experience the Energizer Ultimate Lithium batteries when new were on average 1.80 volts and not 1.50 volts as you perhaps assume, this is where you need to be careful particularly when they are arranged in a series configuration. Some devices don't like the slightly higher voltages as described in the thread linked below. If you have a variable power supply then you could mimic the lithium battery voltages prior to using them in a particular application or multimeter.https://www.eevblog.com/forum/testgear/the-bm235-does-not-accept-lithium-batteries/

author: grumpydoc
author_rank: Super Contributor
timestamp: December 06, 2018, 09:09:04 am
content: 1.8V OCV but they are supposed to drop pretty quickly to 1.5V under load - but, yes, you need to be careful with low current drain applications because they won't load down the terminal voltage and you get pretty close to that 1.8V. I put some in a small pocket torch and they just blew the bulbs.Info here -http://data.energizer.com/pdfs/lithiuml91l92_appman.pdf

author: Terry01
author_rank: Frequent Contributor
timestamp: December 06, 2018, 09:21:49 am
content: I didn't know about the difference in voltages but I use these in all my meters and they are fine. 7 meters in total and they have all had them in for anything from a couple of weeks to well over a year.Prob best to test 1st like the guys say though.

author: Muttley Snickers
author_rank: Unknown
timestamp: December 06, 2018, 10:24:12 am
content: @Terry01It might be useful to others reading this thread if you could list the multimeters you have successfully used these lithium batteries in. I only use the lithiums in cameras but if they ever dropped the price down a bit then I wouldn't hesitate in using them in other equipment as well.

author: wraper
author_rank: Unknown
timestamp: December 06, 2018, 10:32:15 am
content: But why would you use them in the first place? Their price is comparable with low self discharge NiMH rechargeable batteries. Capacity of NiMH is not that much lower. And you would be protected against leaks as well.

author: Terry01
author_rank: Frequent Contributor
timestamp: December 06, 2018, 10:35:46 am
content: Quote from: Muttley Snickers on December 06, 2018, 10:24:12 amI have successfully used these batteries in;Fluke 289; Over 6 monthsFluke 87v ; Couple of daysFluke 177; Over 1 yearBryman 867s; Over 1 yearKeysight U1273a; Couple of monthsEEVBlogg 121GW; Couple of weeksUni-T 210E; Couple of monthsHyelec 89; Over 1 yearDer-EE-DEE 5000; Over 6 months I think all times are about right!

author: HB9EVI
author_rank: Frequent Contributor
timestamp: December 06, 2018, 11:29:50 am
content: The question for that kind of usage should turn about the life expectancy under low current draw.The Li drop-in AA and AAA batteries are made for devices with a high current draw like cameras; a DMM in contrast has a low to very low current draw; so how to those batteries work under low load on long time range? - that's the point.IMO with todays low selfdischarge NiMH, there is no need for such Li Battery in a DMM, as long as the meter takes AA sizes; 9V blocks is a different matter. I switched to 9V blocks on LiPo cells with integrated usb charger, they turned out to offer a much longer up time than NiMH 9V blocks, which are nothing else than low energy density AAAA cells.

author: Terry01
author_rank: Frequent Contributor
timestamp: December 06, 2018, 12:16:12 pm
content: The reason I started using them is for my 289 supposedly chews through batteries so lithium would be better I was advised. Also they do not leak over time as some normal AA or AAA cells do.I ended up just putting them in all my meters as I went along and to be honest I haven't seen anything that jumps out at me one way or the other.I haven't used any of my meters with just normal batteries till they died then changed over to Lithium to see what the difference is long term.I like the fact that the lithium won't leak as I have seen other electronic devices get ruined over the years using normal batteries and if I spend £££'s on a meter I want to do whatever I can to make it last.I am happy with lithium in all my meters but everyone has to make their own mind up whether to use lithium or not.

author: splitzzzzz
author_rank: Contributor
timestamp: December 06, 2018, 12:26:18 pm
content: Thanks Terry01.I've used lithium batteries in;Fluke 101 (2 x "AAA")Fluke PRV240 (4 x "AA")Pentaref Voltage Reference V.4 ( 2 x 9V)Chinese eBay Component/ESR Meter ( 1 x 9V).All of these without any apparent issues as far as I can see and I'm confident they are all "low drain" except for mebbe the PRV240.I also have a FLuke 87V so lithium OK in that. I assume my Fluke 179 is similar to your 177 so lithium should be OK in that too. My Fluke 28ii is functionally very similar to the 87V but uses 3 x "AA" instead of 1 x 9V so I'm unsure on that one! The 28ii was very expensive so I'm nervous about using lithium in that one! Do any of your meters use multiple 1.5V batteries?From memory the 9V lithiums new were about 9.5 volts so not hugely over-voltage say about 5%..... but as Muttley Snickers says series will be different. The 28ii will have 5.4 volts with lithium as opposed to the 4.5 Volts of Alkaline with is 20% more!Unless I missed it, some of the above links just showed that some meters just didn't work, but weren't damaged. If I could be confident in that assumption I'd be happy to swap Lithium into all my DMMs.Yes NiMH solves the leakage issue but like I said mine get only occasional use an normal NiMH would likely self discharge between uses. Yes I could use Eneloops but they are more expensive than the Lithiums which are quite cheap at Bunnings.Thanks for all the replies...cheers

author: Terry01
author_rank: Frequent Contributor
timestamp: December 06, 2018, 12:30:17 pm
content: Something just sprung to mind as I was thinking about this... the 9v lithium are very square, like really really square! The Der-EE-DEE 5000 didn't take them because of this shape so I had to get the other "advanced lithium" I think it was as this is a little less square and just fits in the meter.

author: splitzzzzz
author_rank: Contributor
timestamp: December 06, 2018, 12:47:12 pm
content: HB9EVII have an NiMH charger which can charge 2 x 9V. How does the life of an NiMH 9V compare with an Alkaline 9V?Do Eneloop (Panasonic) make a 9V NiMH? I use Eneloop Pro "AA" (BK-3HCDE) 2500 mAh in my digicam and they are great, but also expensive! (I don't know how these compare with Lithiums?)CHeers

author: splitzzzzz
author_rank: Contributor
timestamp: December 06, 2018, 01:04:25 pm
content: Go figure?

author: Terry01
author_rank: Frequent Contributor
timestamp: December 06, 2018, 01:08:09 pm
content: From memory.....my 289 is 6xAA,my U1273 is 4xAAAmy 121GW is 4xAAAmy 210E is 2xAAall the rest are 1x 9v I am sure.

author: splitzzzzz
author_rank: Contributor
timestamp: December 06, 2018, 01:13:17 pm
content: Quote from: Terry01 on December 06, 2018, 01:08:09 pmOk there goes the theory of multi/series. Might still apply but obviously the DMMs still work!

author: splitzzzzz
author_rank: Contributor
timestamp: December 06, 2018, 01:15:57 pm
content: I just checked RS-online where I got the Eneloop Pro "AA". They don't do them in 9V. There are 6 x different 9V NiMH listed but their mAh ratings are generally very poor with one as low as 150mAh.The best is Ansmann MaxE 300mAh NiMH but at nearly $35??https://au.rs-online.com/web/p/9-volt-rechargeable-batteries/7033524/

author: Muttley Snickers
author_rank: Unknown
timestamp: December 06, 2018, 01:45:56 pm
content: Quote from: splitzzzzz on December 06, 2018, 01:13:17 pmIt's not just whether a meter will still work with these lithium batteries, you also need to consider if the meter will operate correctly and within specification compared to using the batteries originally approved by the manufacturer. A couple of years ago I spent an entire day logging and comparing the test results from a Keysight U1282A, Fluke 189 and Fluke 289 with both alkaline and lithium batteries to see if the measurement values from known references were any different. I have recorded all of the results and concluded that these three meters were not negatively affected in any way by using lithium batteries which was all I needed to know really.

author: wraper
author_rank: Unknown
timestamp: December 06, 2018, 01:56:09 pm
content: Quote from: splitzzzzz on December 06, 2018, 01:15:57 pmYou could just buy IKEA LADDA. Those are exactly the same batteries as eneloop pro but are much cheaper. Both made at Fujitsu factory.

author: splitzzzzz
author_rank: Contributor
timestamp: December 06, 2018, 03:11:06 pm
content: Quote from: Muttley Snickers on December 06, 2018, 01:45:56 pmThanks Mate, I might do the same. I have a PentRef Voltage Reference from VoltageStandard.com which I can use.

author: splitzzzzz
author_rank: Contributor
timestamp: December 06, 2018, 03:17:33 pm
content: Quote from: wraper on December 06, 2018, 01:56:09 pmNever heard of them, but just looked. Much much cheaper about 1/4 the price I paid for the Eneloop Pro......but there's nothing on the Ikea website which says they are low self-discharge? mAh is OK at 2450 but appears to be standard NiMH batteries?

author: wraper
author_rank: Unknown
timestamp: December 06, 2018, 03:22:21 pm
content: Quote from: splitzzzzz on December 06, 2018, 03:17:33 pmThey are LSD batteries made in Japan by fujitsu.

author: wraper
author_rank: Unknown
timestamp: December 06, 2018, 03:26:53 pm
content: I mean particularly white LADDA. There is beige as well which is something completely different. Might be eneloop lite given their capacity, but it's just a guess.

author: Terry01
author_rank: Frequent Contributor
timestamp: December 06, 2018, 03:27:04 pm
content: My 289 was still in factory calibration when I bought it brand new, same with my U1273a which is still in date by about 6 months or there about I think. My 121GW is only a week or 2 old and my 87v is brand new. My 867s and fluke 177 were bought 2nd hand. I bought my 210E brand new too but no cal or anything with that. They all agree to within as near as damn it on DC volts so I think it's safe to say the lithium has no effect or else I have the biggest coincidence known to man that all my meters agree to within a couple of digits.

author: splitzzzzz
author_rank: Contributor
timestamp: December 06, 2018, 03:33:44 pm
content: Quote from: wraper on December 06, 2018, 03:26:53 pmYeah I was looking at Beige ones but now found the white. To be honest as they are on the web page they are described the same? Unless I'm missing something?

author: wraper
author_rank: Unknown
timestamp: December 06, 2018, 03:41:04 pm
content: You could just google eneloop ladda.

author: tsman
author_rank: Frequent Contributor
timestamp: December 06, 2018, 03:43:14 pm
content: Quote from: Terry01 on December 06, 2018, 10:35:46 amYou need to be careful using Lithium batteries in the 121GW. "Fresh Lithium cells produce an overvoltage on the reference on both diode and ohms ranges. Don't use fresh Lithiums and these ranges."

author: wraper
author_rank: Unknown
timestamp: December 06, 2018, 03:47:22 pm
content: "Ready to use" = LSD. They are made in Japan. And the only company in Japan making LSD NiMH is Fujitsu. Specs are exactly the same. Tests show they perform exactly the same.

author: PTR_1275
author_rank: Frequent Contributor
timestamp: December 06, 2018, 04:58:21 pm
content: Coincidently I am running some ikea ladda batteries through testing nowWhen charged straight from the packet they all took ~700mAhI did a discharge on them at 1A and they were (4 batteries, not 4 cycle tests)2436mAh2399mAh2428mAh2422mAhThey’re on charge now, will see how much current they take and update it on here.

author: Terry01
author_rank: Frequent Contributor
timestamp: December 06, 2018, 05:17:02 pm
content: Quote from: tsman on December 06, 2018, 03:43:14 pmThe fresh lithium will be coming out it before I get shot of it, i'm sure it was Duracell that came with it so they will go in it, still decent batteries.

author: james_s
author_rank: Super Contributor
timestamp: December 07, 2018, 05:41:45 am
content: I use LSD NiMH batteries in my meters, never had one leak, they hold their charge for years, they're easily recharged when they get run down, and they're about the same price as those expensive lithium cells.

author: Terry01
author_rank: Frequent Contributor
timestamp: December 07, 2018, 08:23:46 am
content: I get 12 x AA lithium for £10. My charger for my 18650's can charge AA's too if I buy them. I'm still kinda newish to electronics and got lithium as people on here were saying at the time lithium were best to put in my 289 so I just filled all my meters then and since with them.For £10 that gives me two fills for my 289. If i feel they aren't lasting well enough i may change them but so far i am happy with lithium so we'll see when they run down.

author: james_s
author_rank: Super Contributor
timestamp: December 07, 2018, 06:21:10 pm
content: It seems the lithium AA's are cheaper than they were the last time I bought some. I have them in the emergency flashlights I keep in my cars, and I used to have a wireless weather station where I used them in the outdoor unit. Otherwise I've gone fully to LSD NiMH in everything, I no longer buy disposable batteries.

author: Terry01
author_rank: Frequent Contributor
timestamp: December 07, 2018, 06:27:49 pm
content: Quote from: james_s on December 07, 2018, 06:21:10 pmI'll check those out for sure as an alternative to the lithium if I feel the lithium are not performing well. Better tech or saving a few quids is always a good thing. Even the 9v lithium are priced reasonable too, I can't mind exactly how much but can remember when I bought the last lot they were ok.

author: rdl
author_rank: Super Contributor
timestamp: December 08, 2018, 05:05:36 am
content: Seems to me a waste to use Lithium primary batteries in anything that gets regular use, more expensive but don't really last much longer. I would only use them if the long storage life is needed. All my devices are using various brands of LSD NiMH (Fujitsu, Energizers, etc.). For 9 volt I've found the Lithium-ion types are a good replacement for alkaline, 9 volt NiMH just don't have enough capacity. I use EBL brand, you can get two with the charger for under $15 on ebay. Mine are going on 2 years old and still working fine.

author: FrankE
author_rank: Regular Contributor
timestamp: February 07, 2019, 11:51:24 am
content: Quote from: splitzzzzz on December 06, 2018, 01:15:57 pmI use iPowerUS 9V 520mAh Li-Pos in my meters that take 9V batteries and can't recommend them enough. They are used widely in broadcast, film and theatre, hence I got mine 10 years ago from a sound equipment distributor. They are still going strong.They were dear but for their longevitySo I don't damage them or other types of cells by frequent overdischarge I do a weekly check and charge if necessary of all battery equipment every Friday and have equipment listed on an Outlook reminder so I don't miss any equipment. There's no batteries running out on me when I most need them on my watch.It helps to keep on top of things. (my quality and reliability engineering background coming through)The Ansmann 9V and cylindricals (non LSD) failed too frequently.iPowerUS now do 700mAh 9V batteries:https://www.ipowerus.com/products/9v-700mah-li-polymer-rechargeable-battery/They need a LiPo chargerhttps://www.ipowerus.com/products/9v-battery-fast-smart-charger/Dear but economical in the long run.I haven't used a primary cell in years.

author: james_s
author_rank: Super Contributor
timestamp: February 07, 2019, 05:20:15 pm
content: That seems like a lot of work. I use $5 NiMH 8.4V batteries in my 9V gear and pop them on the charger and swap in a fresh one when I get a low battery warning. No charging schedule or weekly messing around. They seem to hold up reasonably well too, my oldest still in service is one I got from Harbor Freight about 6 years ago when the LSD types first appeared in a 9V form factor.

author: David Hess
author_rank: Super Contributor
timestamp: February 07, 2019, 09:42:04 pm
content: Lithium AA cells are only advantageous in high drain applications. At the low currents that a multimeter draws, say 10 milliamps, lithium cells only have about a 20% capacity advantage. This data was extrapolated from Energizer datasheets and Amazon prices.Lithium AA 3500mAH@10mA $1.20 350H 292H/$Alkaline AA 3000mAH@10mA $0.60 300H 500H/$So per hour of operating time, the lithium cells cost almost twice as much and I came to the same conclusion a couple years ago for my handheld GPS which operates for 48+ hours on two AA cells. But lithium cells do not leak (1) and for many users the cost will be insignificant.Incidentally, I estimated the current draw number from a couple of automatic ranging handheld multimeters which could operate for about 200 hours from an alkaline 9 volt battery. In the past, manual ranging meters could operate for ten times this long (yes, 2000 hours!) under similar conditions and I heard many complaints about the much shorter operating time of automatic ranging meters when they were introduced. Comparable modern manual ranging meters are down to 150 to 500 hours, so much for progress. But this explains why manufacturers are so aggressive about automatic power off.(1) They said alkaline cells did not leak when they first came out yet now they do so I am dubious about this claim for lithium cells. Why would I believe anything that battery manufacturers say?

author: rsjsouza
author_rank: Super Contributor
timestamp: February 07, 2019, 10:21:23 pm
content: I have been using Lithium batteries on my U1282A which takes AA batteries and is a lower consumption meter - I am terrified of leakage, especially on such expensive meter. My U1273A also gets the AAA lithium now, but it is a much more power hungry meter.For all the other meters that use 9V I use the cheaper alkalines anyways, as it takes much longer for them to catastrophically leak.

author: zitt
author_rank: Regular Contributor
timestamp: February 07, 2019, 10:49:51 pm
content: Quote from: David Hess on February 07, 2019, 09:42:04 pmExactly why I'm moving to almost exclusively Lithium for my Pinball machines.Simply put; the china manufacturered duracells and Energizers are crap.The leak ALL THE TIME even before their "expire" date.I just don't trust any brand of AA alkaline batteries any more. Too much risk.

author: Bratster
author_rank: Frequent Contributor
timestamp: February 07, 2019, 11:04:48 pm
content: Quote from: zitt on February 07, 2019, 10:49:51 pmSame here.Can't stand the risk of Leaky batteries.Although unfortunately the eevblog 121gw meter can be damaged by using the lithiums (to high voltage when new) so I had to go with rechargeables for that.Sent from my Fi Moto x4 using Tapatalk

author: james_s
author_rank: Super Contributor
timestamp: February 08, 2019, 04:30:55 am
content: I've never had an Eneloop leak, the oldest ones I have are pushing on 10 years old. With just two sets you can always have a set in whatever gear you want, and another set fresh off the charger ready to swap.

author: David Hess
author_rank: Super Contributor
timestamp: February 09, 2019, 10:24:38 pm
content: I have had NiCd and standard NiMH cells leak through their safety in vents at the end of their life but it was not nearly as destructive as the leakage from an alkaline-ZnMO2 cell. None of my Eneloop cells have leaked.

author: Per Hansson
author_rank: Unknown
timestamp: April 16, 2019, 08:00:37 pm
content: Quote from: splitzzzzz on December 06, 2018, 12:26:18 pmFor what it's worth I have used the Energizer Lithium AA's in my first Fluke 28II.The reason I did it is because it had the issue that it woulddie in a high-drain scenarioboth because thebacklight and buzzer used too much powerwhich these fixed.As it was it also had a bulging back so I sent it in and got a complete replacement for these issues.The new meter still has the original Energizer alkalines in it, gives me a bad feeling though: I would hate for them to leak all over my meter!Has anyone researched what sort of battery input this meter uses, i.e. what voltage range it should technically handle?I also have a Fluke 325 clamp meter, it uses two AAA batteries and I use the Energizer lithiums in it too without problems.One big advantage they have for me as I travel in work is the meter works fine even if it's -20°C with these batteries...

author: gwhaley
author_rank: Newbie
timestamp: February 12, 2022, 11:34:32 am
content: Old thread I know, but thought I'd throw this here for anybody in the future.I think I've found that Ultimate Lithiums are not good for use in the Extech EX330. With them the resistance auto range would not lock. In fact no resistance range would lock. Swap the batteries out for some part used alkalines (~1.3v) and all seems back to normal. In fact the (rather annoying) NCV function seems to work better as well.I originally went with the ultimate lithium as I had them sat around, and I know my meters are used little and infrequently enough that having a 10year non-leaking battery in there (well, I've never seen one leak) would have suited my 'work pattern' nicely. I'll consider picking up some more Ikea aaa LADDAs and putting those in.At least now I might not bin the EX330, which I was seriously considering yesterday. It still has annoyances, and I wish when I got it a few years back I'd seen the Brymen recommendations ;-) I'll work myself up to getting one of those, maybe. I've lost a little bit of faith in the EX330, and if you can't trust your meter then, well, it's not really of use is it!Annoying things about the EX330 for me then:- the NCV function cannot be turned off. The manual states 'works in all dial positions' - yeah, even in the *off* position. So, when you can hear the NCV buzzing away in your tool bag as something is pressing on the button, you have to wonder if the meter will still be alive when you next need it :-(- even though the resistance auto range now works, it is *slow*. So slow I thought it was still broken. You can visually watch it slowly walking through the ranges trying to find a match. It was taking 3-4s to lock on a 3k3 resistor. My old 2nd hand Fluke 73-ii took maybe 0.5s.Well, I hope some of that helps somebody in the future :-)

author: rsjsouza
author_rank: Super Contributor
timestamp: February 12, 2022, 12:29:39 pm
content: I am sorry to hear the Extech is not very fast and has been causing grief with the batteries - this indicates the design does not have a voltage regulator on the bat+ line.Anyways, the 3-4s autorange can happen even in modern meters (Dave's 121GW and Keysight U1282A are infamous for that) and even with some of the cheapest meters around. That said, did you open your meter to see if the input jacks have some residue or other issues that could be delaying the autorange? Extechs are famous for quality control problems, asthis threadindicates.I don't know when you bought your Extech nor what you use it for, but the marketplace nowadays is quite different, especially if you do not need the safety remarks. Even if you do, a Brymen BM235 is quite the meter and can be had for a much more reasonable price than the older Extechs.Anyways, good luck!

author: mindcrime
author_rank: Unknown
timestamp: February 19, 2022, 07:28:40 am
content: To add one more slightly related anecdote that might be vaguely relevant... I don't know about the multimeter case, but I *have* seen the Lithium batteries cause problems in other devices (TI calculators to be specific), apparently due to the slightly higher voltage. My old TI-85 and TI-86 calculators don't tolerate that very well and if you load them with Energizer Ultimate Lithium batteries the screens run super dark to the point that they are all but unusable. Freaked me out the first time I put some of those in one, as I thought my prized calculator (I have a sentimental attachment to my TI-85 in particular) has croaked. But as soon as I went back to non-lithium AA batteries the calculator(s) went back to normal.Anyway... take that for what it's worth. I'd guess there's at least an outside chance that some DMM's, maybe older ones in particular, might have some slight issues with the Lithium batteries.

author: wizard69
author_rank: Super Contributor
timestamp: February 19, 2022, 10:30:28 pm
content: Quote from: splitzzzzz on December 06, 2018, 08:40:45 amI highlighted an important sentence above, MSHA (Mine Safety and Health Administration) is a regulatory agency for the mining industry and as such the only approved way to use that meter in the mining industry is to use the batteries specified. To put it another way it has been validated to what ever regs the MSHA has to be suitable for those hazardous locations. If anything else where to be use then there would be a violation.It should be noted that this says nothing about what can be used in the meter. Most of use would not consider brand in the past when it came to Alkaline batteries. These days, with the drop in quality, most of us have looked to solutions other than Alkaline batteries.In that regard I've made an investment in Panasonic NiMH batteries and Energizer Lithium batteries. I use the rechargeables in many things including multimeters with great success. I use many of the Energizer Lithium batteries in flashlights, especially those in automobiles with the hope of better long term storage and better cold weather performance. So far I've been happy that nothing has been corroded to death due to an Alkaline. Generally I see rechargeables as a better solution for instruments.

author: FrankE
author_rank: Regular Contributor
timestamp: February 20, 2022, 09:29:05 am
content: Quote from: james_s on February 08, 2019, 04:30:55 amI've never had an eneloop leak and only one has failed of about 80 I've used from buying my first packs about 2009.Eneloops are fine for meters. For the ones that need frequent battery changes just have a spare set in a battery case in the meter case if one can't be without the meter for the time it takes a set to charge.I only have a swap set for my FLUKE 289 because that takes 6 AAs and my Maha charger only has 4 ports and by the time I charge 4 at up to 90 minutes then the other 2 that could be 3 hours and a flat supercap.No need for the blacks which have fewer charge cycles

author: asupsp700
author_rank: Regular Contributor
timestamp: April 30, 2022, 02:32:10 pm
content: I'll raise the topic. I have Fluke 87V. I want to try a lithium power supply. Here is onehttp://www.pkcell.net/?Li-MnO2-Battery/CR9V.htmlWhat do you think is a good company? Has anyone installed a battery like this?