What kind of rechargeable batteries do you use, and how do you charge them?
Li-Ion, Ni-MH, Ni-Cd, LiFePO4, Pb, everything is interesting.
I have one of these attached to a single ~1x4 meter solar panel and a 12v car battery (the latter for use at night, even if it's lossy).
Charges batteries quite well.
Flashlights, remotes, sex toys, smoke detectors, car, vape, various gadgets, soldering iron (a smaller portable one), smartphones (both internal batteries and external USB-attached battery packs), RC vehicles, power tools (drill, saw)... and many more things.
Do you mean one of these?
They are made in rechargeable form... I use them in smoke detectors.
why do you use them so frequently?
don't batteries last forever in them?
the firefighters come and replace mine for free all the time
aren't we talking about off the shelf rechargeable batteries or something?
lol gaylord detected. nicotine is toxic retard
12 year old detected
it should be gas
lipo batteries can deliver much higher currents, are light(suitable for quadcopters for example), and are cheap as fuck.
They do tend to catch on fire if you damage them or look at them in a wrong way.
Generic Duracell Ni-MH for my xbox 360 pad and wireless keyboard and mouse.
I keep alkaline batteries in my flashlights though I haven't used them in years, the power almost never goes out and the LED flash on my phone is good enough for everything else.
I'm using some of these for flashlights, too. And some Japanese ones.
I recall having one defective Chinese Li-Ion but it didn't give me any further trouble. No housefire or explosions... I don't think they're typically dangerous unless you mistreat them...
The hard li-ions explode if you overcharge them or do overload them and they have no chip to limit it.
They don't catch on fire however. That crown goes to Lipos
I put lipos in a fireproof bag in my garage in a metal box. The cold temperature keeps them good for a longer period and keeps them away from my house.
Don't fuck around with Lipos
>aren't we talking about off the shelf rechargeable batteries or something?
Car batteries are both "off the shelf", in that you can go into a retail store and buy one off of a shelf, and rechargeable.
>A lithium polymer battery, or more correctly lithium-ion polymer battery (abbreviated variously as LiPo, LIP, Li-poly and others), is a rechargeable battery of lithium-ion technology in a pouch format. Unlike cylindrical and prismatic cells, LiPos come in a soft package or pouch, which makes them lighter but also lack rigidity.
Lighter, cheaper, and less durable, sure. That's because of the different form factor. Capable of higher currents, I'm not so sure. I think it's the same technology.
I've got 60ish Sanyo/Panasonic Eneloops and a Lacrosse charger. My oldest are about 3 years old, and still within 100 mah of their rating.
Flashlights, camera flashes, flash triggers, remotes, clocks all get them.
>no the massive ones.
Hm, I don't know which. But that's okay, I guess...
>And if you use rechargeable in smoke detectors, wouldn't that just mean you have to replace it/charge it more often? fuck that
Not really. They seem to last just as long if not longer. The ones I posted are protected Li-Ions, so energy density ought to be pretty high.
Whether I saved money by getting them is still open, (depends on whether they work okay for another ~4 years) - but I saved some trips to the store or orders for new batteries...
Besides, it seems to me that for the AA/AAA cells at least, NiMh also has become as good if not better than Alkaline. And I'm also happy with my 18650 Li-Ions in battery packs and flashlights.
Rechargeable batteries seem to be almost always superior nowadays...
> why do you use them so frequently?
Because I don't have lights installed in the garden and in every corner?
Never mind that I do also go outside at night. I guess in the USA, you'd typically do so with a car - but I find it easy and convenient to go on bike or on foot.
> don't batteries last forever in them?
LSD NiMh last for a while, yep. But it depends on the remote. Not all of these were constructed very well, apparently. Some seem to have more power draw. Not that it bothers me now.
> the firefighters come and replace mine for free all the time
Now that is quite weird...
> aren't we talking about off the shelf rechargeable batteries or something?
They are off the shelf 12V pb (lead) acid batteries, usually. Unless you're using an entirely electrical car.
We can also talk about them.
> it should be gas
I have one of these too, but it's often less practical.
Eneloops for conventional batteries. Too bad Panasonic now moved production to China and quality of the newer ones suffered as a result.
> I've got 60ish Sanyo/Panasonic Eneloops
All Eneloop? That's pretty nice.
I've got a bunch of 4th gen and some Amazon Basics (which are suspected 2nd gen eneloops), and they are certainly neat.
But for the most part, I went with Turnigy / Ladda and other cheaper batteries...
> and a Lacrosse charger
I also have one of those. BC-900. Pretty nice thing. And since it has no fan, I can use it near the office desk or in the sleeping room.
Oh, good, a battery thread.
So, what I know about Li-ion batteries is that it's good to not overcharge/overdrain them. There's even some devices that have "battery longevity" feature which charges the battery up to %80 tops. Does this make sense or is it a gimmick?
If this is good practice, then does it make sense to do the same for cell phone batteries? Specifically, is cell phone battery circuitry good enough at preventing overcharging that it makes it unnecessary to pull phone from the charger at %90 or something?
Yes good goys. Use those batteries! Buy the expensive rechargeable ones!
>There's even some devices that have "battery longevity" feature which charges the battery up to %80 tops. Does this make sense or is it a gimmick?
Both. I guess if you were to store them (typically in a cooled environment) and not use them for a while, 80% wouldn't be such a bad choice.
OTOH, there is no really good reason to omit the last 20% for a little more longevity as a normal user.
>Specifically, is cell phone battery circuitry good enough at preventing overcharging
Yes, but that protection is against objectively overcharging it (when it just produces heat and wrecks the battery over a fairly short period of time). Not for giving it a shelf storage charge.
Yes good. GOOD! Be sure to buy the ones that last the longest! And buy lots of gadgets that use batteries!
Usually, good rechargeable batteries are useful for like 10 years or so.
That gives you plenty of opportunity to amortize them with the like 5-10 charges needed. (Obviously depends on the application involved...).
All the $1.2-1.5 an Ikea Ladda or Turnigy AA costs. (Even AmazonBasics and Eneloops are rarely more than $3-4 a piece).
Yes good work. You are basically being paid to use your gadgets when you do the sums!
> Ok, how about charging up to %90 then?
You could, but again, why? If you use the battery, you also want to use the last %10, right?
> Right, so the circuitry is not good at protecting the battery?
Yes, it is. Charging to 100% is fine with a decent charger that has adequate protection mechanisms in it.
But the circuitry isn't against the slightly faster aging that charged Lithium batteries exhibit at more charge and higher temperatures...
Huh? No? But it's the cheaper option vs non-rechargeables IF I want to use my gadgets anyways.
Of course *not* using anything is even cheaper.
I do want to do things, however. But why have *you* not turned off and sold your computer yet?
Well I bought the charger for my RC stuff which is mostly lipo-powered, but since it handles NIMH as well I buit that AA holder. I'm kinda into mini4wd too so it helps, batteries charged at 2A have more punch, and the delta peak calibration and 1A discharge feature is quite nifty.
Sounds interesting. I might also have to try this.
You say your NiMh can take 2A charge *each*? Or is that for LiPo or both together?
> delta peak calibration
Ooh, charger porn! Another thing I might have to try on NiMh...
> 1A discharge feature
It's not very important, but does this thing return that to the grid, or dissipate it as heat?
For NIMH the standard charge should be 0.5C (which is half the capacity of the battery; so if a cell is 2000mah, charge should be 1A). Fast charge is 1C but the batteries get quite hot, that's why I'm keeping them in front of the PSU fan in the pic. Lipos can handle charges up to 2C.
The discharge function is useful for "cycling" batteries which can lower the memory effect of NIMH cells (not that necessary on eneloops, they're quite good) or to "revive" old batteries.
NiMH Energizers. Mostly because an Office Depot store here closed down and I bought three 8-packs on clearance.
I use them for my video lights, and use this to charge them ... I need another one.