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>>107178654excellent thread anon
>>107178654sovl
scan and analyse the image on virustotal
>>107178654The superior choice for years now.I haven't wasted money on disposables since '09 or so. Still using the same bunch of AAs and AAAs, but I do need to test them and see how much of their original capacity is gone, the oldest ones are probably up for replacement. Last time I even bought any more Eneloops was in 2020 or so. I let most of my original batch under the old Sanyo name go with some electronics I sold off in 2018, so my most oldest are gone.
>>107180000These void your home insurance.
>>107178654
>>107178654you sick fuck MOOOOOOOOOOOOOOODS
>>107180000>1.2vOH NO NO NO
>>107181382Always wondered about that. There a reason rechargeables are 1.2V instead of 1.5V? .3V difference might not seem like much in passive casual thought. But stack 4 of them like many devices do, and you're down 1.2V ... a whole cell.
>>107181488
>>107181488the reason is the chemistry is different. battery (cell) voltages are not arbitrary, they're an intrinsic property of the materials usedthat is, you can't make a 1.5v Ni-Mh cell, because that's simply not the voltage a Ni-Mh cell produceswhile this sounds like they'd be less powerful, or not last as long, this isn't necessarily the case, because the discharge curves for Alkaline vs. Ni-Mh are very different as well. alkaline batteries start at 1.5v, but drop at a somewhat steady rate down to 1v (the typical cuttoff/"flat" mark), with the average voltage over its' life being around 1.2v, while a ni-mh battery starts around 1.2v and remains there until it's nearly flat.basically, if your device doesn't work well at 1.2v, then it's wasting half of the capacity of your alkalines and isn't a well-made device to begin with
>>107182250>>107182409and to explain these, li-ion has a cell voltage of 3.6v (or 3.7v, depending on who you ask), which also has it's own different curves.these types of 1.5v drop-in li-ion batteries have a buck converter inside of them to turn the 3.6v into 1.5v. they can be excellent in devices which work best at 1.5v because having an electronic voltage controller in them means they can hold 1.5v for the entire capacity of the battery
>>107182425Most lithium AAs are non-rechargeable, that chemistry gives 1.7v, not the 3.6v of rechargeable lithium batteries. Some things still don't like that because they don't sag under load nearly as much as (may God curse them) alkalines, but usually its fine. The big advantage is that they have a shelf-life measured in decades.
>>107182409>>107182425Cool. Thanks. Didn't know about AA li-ion voltage converter.
>>107182514yea, lithium aa's aren't the same as li-ion aa's, but anon's pic is of li-ion ones
>>107182514-- and yea, primary cell lithium last forever, i has a pair in my universal remote from 2006 to around 2022. their expense can be worth it if you want ones that just feel like they never need replacing
>>107182514primary lithium batteries are 3V, not 1.7
>>107178654This except it's the non retarded brother (see pic related)
>>107181488The cell voltage depends on the chemistry, I don't think it can be easily adjusted up and down at all. NiMH chemistry just comes out at 1.2V per cell nominal, though that's not the fully charged voltage. Fully charged they're close to 1.5V IIRC. The slightly lower voltage isn't really a problem, because regular, non-rechargeable 1.5V batteries also don't hold constant voltage, it drops as more of the battery's charge is used up and at 1.2V there's still plenty left, so devices will / should continue to work.
Alright I bit the bullet and bought Eneloops. Can I get recs for a cheap > $20 charger that won't fuck up my batteries and handles Li-Ion as well?
You now remember Batteries not included(1987)
>>107180000>he's buying regular panasonic eneloops when ikea laddas are the same exact eneloops just with a different sticker on it and is 1/4 the priceretard.
>>107183644You need a discharger more than you need a charger.Discharge down to 1v or 0.9V. Then charge back up to capacity by whatever rate your charger outputs, set a timer, use a smart plug, you can even fast charge at 1C and you'll be fine.Discharging NIMH is the trick, take 'em down to 0.9/1V regularly and don't overcharge them. Smart chargers outside the RC space will never not fuck you over.Can't beat math buddy. Can't beat math.
>>107182524To expand on what>>107182409>>107182425said.NiMH batteries also have fairly low internal resistances, so they can handle moderately heavy drain very well. 1-2 amp discharge rates on a AA cell are absolute murder for an alkaline battery. Alkaline cells will frequently sag down into the .5-.7 volt range even when fully charged. This means that you wind up burning a ton of the available energy to heat, which means that their effective capacity can shrink by 2/3 (or even more with the shitty ones). Meanwhile decent NiMH batteries barely even register a difference at a 2 amp load.This guy did some extensive charting a while back. Look at the measured capacities for different types under different loads. The NiMH batteries have near identical capacity ratings at 1/4 amp and 2 amp loads. The best alkaline had about 1/3 the capacity in a high drain scenario.https://www.youtube.com/watch?v=bQ_tGjXm0NgIf we're being fair here, you shouldn't be running sustained 2 amp loads on AAs, but the fact is that you /can/ with NiMH, and they won't outright die from it. Short circuit current on an eneloop AA is something like 27 amps, and it will recharge and work just fine afterwards. You'll kill it if you short it hundreds of times, but the fact that they can handle it at all is nuts.>>107183644You can't go wrong with xtar chargers. IMO the 3 to look at area)The xtar VC4 is like 20 bucks.b)The VC4SL version is ~30 and can do capacity testing as well.c) If you want to be able to recharge all the things, get the VX4.All of these can do the 3.6v lithiums and NiMH, but the VX can charge the new 1.5v lithiums that have the buck converters in them, and it can recharge lipos, which is nice if you have drones or other RC equipment.
>>107178654Shit tier battery, always leaks and corrodes the + terminal. Never was a problem in the 90s but in 2020 duracell is shit.
>>107184564yea, shit gets complicated when you dig into batteries. not just AA's and the like either.>Short circuit current on an eneloop AA is something like 27 ampsthat's pretty cool, not as much as a li-ion cell, but for an AA that's nuts
>>107184564My recommendation for batteries is to stick with NiMH for practically everything.Maybe keep a handful of non-rechargeable lithium disulfides around for specialty use cases. Disulfides have a very long shelf life, a very high capacity, and have exceptionally low passive discharge rates. They're good for tools you don't use frequently, or things like an emergency flashlight that you keep in your car and needs to work when it's 20 below zero.>>107184525>You need a discharger more than you need a charger.Bullshit.That was true with NiCads, it's categorically false with NiMH. Maybe some offbrand garbage ones have memory, but eneloops, powerowls, and any other reasonably reputable brand won't care about short cycling in either direction. You can charge-discharge-charge to test capacity periodically, and that will tell you if a cell is failing, but it does nothing to improve the cell's life.
>>107184674Maybe you should learn to read you absolute utter fucking mongoloid.
>>107184614>that's pretty cool, not as much as a li-ion cell, but for an AA that's nutsIndeed. It also won't violently burst into flames in the process. High discharge lithium cells have to have protection circuitry to prevent you from overloading them, and it's largely unnecessary with NiMH because the chemistry is so stable.That's part of why they have such low self discharge rates. They're /just/ a battery. There's no circuitry in them to cause trickle drains in the first place. Sure, disulfide cells are even more stable, but they're not rechargeable.
>>107184703>telling people to read my schizo posting makes it true.
>>107184674>it's categorically false with NiMHretardthat's not what the text says Indian
>>107185680NTA. Why would you discharge batteries except to prevent them from short cycling? NiMH batteries don't have memory.
>>107181488Anything designed to run on alkaline batteries should tolerate 2-0.9V per cell. NiMH has much lower internal resistance than alkaline and stays pretty flat 1.2V under most loads, where alkaline may droop 10-20%. Motors perform noticeably better with NiMH despite the lower nominal voltage.
>>107178654https://www.youtube.com/watch?v=yq9xqXjnC6k
>>107183698Went to the cinema to watch this shit when I was a bairn and it was fucking terrible.
