Product: 16-Pack: Popular Mechanics Battery Converter Shells + Bonus Screen Shine
Model: P913N612, P393N562
Condition: New
Battery Converter Shells
Stock up on AA batteries and never worry about buying C or D batteries
Battery converters turn AA sized batteries into C & D batteries, eliminating the need to search for different battery sizes and ensuring your devices are powered whenever you need them most
Reduces the weight of the item you are using which is perfect for toys and portable devices
Simply open the converter, inserts AA battery, close, and use
Note: We strongly recommend the use of high energy alkaline or nickel metal hydride (nimh) AA batteries within the battery adapter
Material: ABS
C Battery Converter Shells: 1.97" Length, 1.03" Diameter
D Battery Converter Shells: 2.42" Length, 1.30" Diameter
Voltage: 12V
Screen Shine
Includes a bonus screen shine cleaner and cloth
Keep all of your devices clean with this natural cleaner that won’t streak or harm devices
Two-sided cloth has a blue side to clean and a grey side to polish
Cleaner: 1 oz (30ml)
Cleaning cloth: Premium microfiber
What’s Included?
16x Popular Mechanics Battery Converter Shells with Bonus Screen Shine
@stinks It’s all the same voltage so it works, but of course the AAs will die a lot faster than the C and D cells.
These converters are typically used to allow you to use rechargeable batteries in things that need Cs and Ds because you can’t typically buy C and D sized rechargeables.
@stinks Galvanic/electrochemical cells of a given chemistry have the same nominal voltage. The size of the cell simply determines the energy contained within. That’s why all alkaline cells are listed at 1.5 V (whereas a 9 V battery contains 6 small cells in series.) A D cell is just like a 1.5 V AA cell except the former contains more energy (energy is power over time, power is the product of voltage and current.)
@stinks The problem I see with these is two-fold they are cheaply made and the D size only uses 1 battery. The ones I have from Amazon hold 3 Batteries. Giving you a lot more capacity. I only use these cause regular batteries leak. With them, I can leave batteries in them indefinitely without worry.
@stinks Well, I’ve used a couple of C cells (and some corrugated cardboard and a slug of fender washers) in an LED flashlight in place of D cells. It works fine, but it does change the balance of the flashlight. So I bet these work, too.
(Now I have an urge to try to replace D cells with 2032 coin cells…)
@chienfou@phendrick@Rowsdower
It’s the pinky of the left hand moving with the rest of the fingers of the right hand makes it look like the right hand has six fingers.
@JT954 Considering rechargeables are 1.2 volts instead of the 1.5 alkalines give you, reducing the size of the battery will probably further reduce its lifespan and/or effectiveness. Short answer is okay in low-drain devices like LED flashlights; not so much in stuff like boomboxes or fluorescent lanterns.
That’s an M79 grenade launcher, designed to fire 40mm grenade shells. Since a D battery is only 33mm in diameter, it wouldn’t work very well in reality.
I hope nobody here today expects the same lifespan out of AA cells as they’d get from Cs and Ds. The 1.5 volts is the same across all sizes, but C and D cells provide considerably more current.
@Atomizer@PooltoyWolf I end up looking like an illiterate dirt-dwelling manchild any time I try to talk about electricity, but at least I’m in good company!
I’ve seen these before, and I always wondered if they were worth it. My brain can’t justify using a AA in something that’s going to die super fast since it expects a C or D.
I have some LED flashlights that take D cells. These would probably work OK for that particular application since LEDs have extremely low draw. It’s still not going to last as long as a real D cell would, but in a pinch it would be Ok. On the other hand, I also have an old boom box that uses C cells, and I expect that while I would be able to turn the thing on it would die REALLY quickly because driving those speakers and the motor on the CD player/cassette deck kills batteries quickly. Maybe if I switched to headphones it might last a reasonable time.
These aren’t completely useless, but they are definitely a niche product.
@godainobaka@Macoland One use I could see is I have a very bright flashlight that uses C cells.
I don’t use it enough to drain the batteries, but I want it ready to go right away. Everyone knows what happens when you leave alkaline cells in a flashlight (or just about any other electronic). They leak.
With AAs, you could either drain them fast enough to not leak, or use cheapish rechargeables.
Suppose you put lithium AA batteries in these?
I have very carefully recharged energizer lithium AA cells in a Nimh charger
Requires manually monitoring temperature and charge for safety
Okay went and checked the energizer data sheets
Even a lithium AA only has about a third of the capacity of a D alkaline (very approximate estimate 3000mah vs 10000mah over 1 volt, the D will keep going at lower voltage which would be fine for a flashlight)
@oldmantick Yeah, the capacity difference between AA and a D is huge. But the other factor is what kind of a load you’re putting on it. A device that requires a very low load over a long period of time, such as an LED flashlight, would probably work great with these, although it still wouldn’t last as long as a real D cell. The more load you place the battery under, the less time it’s going to last, and some devices which pull a particularly high load might cause the AA to overheat and fail pretty much immediately.
Case in point: I used to have a portable CRT television set that ran off of eight D-cells (12V). When I tried using a similar “battery shell” product with it, the thing turned on, and shut down in less than 5 minutes. When I pulled the shells out the plastic was melting because the batteries had overheated.
@oldmantick What voltage does your NiMH charger deliver to the discharged batteries?
Typical NiMH or NiCad cells are 1.2V.
You can recharge them with a charging voltage that is higher than 1.2V. I’m not sure what voltage the NiBatts are typically charged with, but typical lithiums run at 3.7V and will charge up to 4.2V (before safety features shut off charger). :Insert long explanation here:
To charge lithiums, you typically use about 4.9-5V. :See long-ass safety info:
I think.
I never use two flashlights, that take C batteries, that someone bought me at Costco. Yesterday I put them in a box to take to Goodwill. I don’t know if this is worth the money, but I kind of liked those flashlights, so I’ll give it a try. Buying C batteries is a pain in the butt, and I have tons of rechargeable AAs.
The problem with these things is that they are lower capacity… yes they will work, but a C is 8000mAh whereas the AA is 1200mAh. And a D cell can be 20000mAh
@tardis
True, but how often have you gone to use a C or D battery driven item only to find that the batteries are dead. At least this way you can use the AAs you bought here by the metric shit-ton to run whatever it is.
Battery Converter Shells
Stock up on AA batteries and never worry about buying C or D batteries Battery converters turn AA sized batteries into C & D batteries, eliminating the need to search for different battery sizes and ensuring your devices are powered whenever you need them most
Reduces the weight of the item you are using which is perfect for toys and portable devices Simply open the converter, inserts AA battery, close, and use
Note: We strongly recommend the use of high energy alkaline or nickel metal hydride (nimh) AA batteries within the battery adapter
Material: ABS
C Battery Converter Shells: 1.97" Length, 1.03" Diameter
D Battery Converter Shells: 2.42" Length, 1.30" Diameter
Voltage: 12V
Specs
Product: 16-Pack: Popular Mechanics Battery Converter Shells + Bonus Screen Shine
Model: P913N612, P393N562
Condition: New
Battery Converter Shells
Screen Shine
What’s Included?
Price Comparison
$59.95 for bundle at Amazon
Battery Converters $51.96 for 16 at Amazon
Screen Shine $7.99 at Amazon
Warranty
90 days
Estimated Delivery
Monday, Mar 6
do I need to keep these in the fridge too?
I don’t really need the power of the D, I need the heft. It’s the only reason I still have a MagLite in the car.
@fuzzmanmatt According to my records, that (checks notes) is what she said.
@fuzzmanmatt add sand.
@fuzzmanmatt Maybe you could add some lead shot to the open spaces of the adapters.
Ok, somebody smarter than me explain how lower power (?) AAs work as Cs and Ds.
/image Cs get degrees
@stinks It’s all the same voltage so it works, but of course the AAs will die a lot faster than the C and D cells.
These converters are typically used to allow you to use rechargeable batteries in things that need Cs and Ds because you can’t typically buy C and D sized rechargeables.
@stinks Galvanic/electrochemical cells of a given chemistry have the same nominal voltage. The size of the cell simply determines the energy contained within. That’s why all alkaline cells are listed at 1.5 V (whereas a 9 V battery contains 6 small cells in series.) A D cell is just like a 1.5 V AA cell except the former contains more energy (energy is power over time, power is the product of voltage and current.)
@stinks The problem I see with these is two-fold they are cheaply made and the D size only uses 1 battery. The ones I have from Amazon hold 3 Batteries. Giving you a lot more capacity. I only use these cause regular batteries leak. With them, I can leave batteries in them indefinitely without worry.
@stinks Briefly.
@Billlh @stinks Do your D cell adapters use the AAs in series (for 4.5V) or in parallel (1.5V)?
Linky?
I have a couple of uses for D size 1.5V, but using 3 AAs would be sweet.
@stinks Well, I’ve used a couple of C cells (and some corrugated cardboard and a slug of fender washers) in an LED flashlight in place of D cells. It works fine, but it does change the balance of the flashlight. So I bet these work, too.
(Now I have an urge to try to replace D cells with 2032 coin cells…)
@G1 @stinks in Parallel https://www.amazon.com/dp/B00OUM17AQ/?coliid=I24XE6LRMJ7MR6&colid=339TEI3Q73FQ6&psc=1&ref_=lv_ov_lig_dp_it
Turns A’s into C’s and D’s?
Doesn’t that lower your GPA?
@phendrick
@phendrick @Rowsdower
Somehow that looks like entirely too many fingers
@chienfou @phendrick @Rowsdower You don’t want her massaging your balls?
@chienfou @phendrick @Rowsdower
It’s the pinky of the left hand moving with the rest of the fingers of the right hand makes it look like the right hand has six fingers.
@chienfou @DVDBZN @phendrick @Rowsdower I’ll decide who I want massaging my balls, thank you.
@DVDBZN Ding Ding Ding winner winner chicken dinner.
@detailer @DVDBZN
Looks more like a breast implant to me…
This actually sounds cool. Would these work with rechargeable AA batteries as well?
@JT954
Yeah, i 3D printed my own adapters and use rechargeables in them all the time.
@JT954 Considering rechargeables are 1.2 volts instead of the 1.5 alkalines give you, reducing the size of the battery will probably further reduce its lifespan and/or effectiveness. Short answer is okay in low-drain devices like LED flashlights; not so much in stuff like boomboxes or fluorescent lanterns.
@JT954 Absolutely. All these are are physical adapters to turn a smaller cell into a larger one.
Huh?
@jandrese If you have enough of them.
@blaineg @jandrese 10 NiMH batteries at 1.2V each wired in series. Or, someone typo’d the decimal point.
Why is the dude in the last picture shooting it
@averyrudge They banned assault rifles, and so he had to rely on a battery rifle.
@averyrudge Just to be silly. The last picture is usually a joke.
@mehcuda67
Ohh, I like this answer.
@averyrudge @mehcuda67 It’s obviously meant to depict assault with battery.
That’s an M79 grenade launcher, designed to fire 40mm grenade shells. Since a D battery is only 33mm in diameter, it wouldn’t work very well in reality.
@Bloodshedder
Wrap on a few layers of duct tape and it’s good to go! Is duct tape adhesive flammable? That’d make the launch tube self-cleaning.
@Bloodshedder @mwarren Jamb a dart in the ass end and you have a stabilized artillery battery.
Or is it battery artillery?
I don’t know, just paint it green and sell it to Putin’s rich friends.
Meh STAFF:
ARE YOU AWAY of the error on Sidedeal The description does NOT match the offer.
@jeffreywsnyder Was that meant to be ironic?
@jeffreywsnyder I’m sure they are AWAY…which is why they’re not aware.
I hope nobody here today expects the same lifespan out of AA cells as they’d get from Cs and Ds. The 1.5 volts is the same across all sizes, but C and D cells provide considerably more current.
@PooltoyWolf More energy. The current is whatever the load is drawing.
@Atomizer @PooltoyWolf I end up looking like an illiterate dirt-dwelling manchild any time I try to talk about electricity, but at least I’m in good company!
@Atomizer Figured someone would chime in!
Finally, Meh understands the cheapness of the Mehizens.
/showme batteries in the refrigerator with banana for scale
I’ve seen these before, and I always wondered if they were worth it. My brain can’t justify using a AA in something that’s going to die super fast since it expects a C or D.
@Macoland Depends on the application.
I have some LED flashlights that take D cells. These would probably work OK for that particular application since LEDs have extremely low draw. It’s still not going to last as long as a real D cell would, but in a pinch it would be Ok. On the other hand, I also have an old boom box that uses C cells, and I expect that while I would be able to turn the thing on it would die REALLY quickly because driving those speakers and the motor on the CD player/cassette deck kills batteries quickly. Maybe if I switched to headphones it might last a reasonable time.
These aren’t completely useless, but they are definitely a niche product.
@godainobaka @Macoland One use I could see is I have a very bright flashlight that uses C cells.
I don’t use it enough to drain the batteries, but I want it ready to go right away. Everyone knows what happens when you leave alkaline cells in a flashlight (or just about any other electronic). They leak.
With AAs, you could either drain them fast enough to not leak, or use cheapish rechargeables.
Suppose you put lithium AA batteries in these?
I have very carefully recharged energizer lithium AA cells in a Nimh charger
Requires manually monitoring temperature and charge for safety
Okay went and checked the energizer data sheets
Even a lithium AA only has about a third of the capacity of a D alkaline (very approximate estimate 3000mah vs 10000mah over 1 volt, the D will keep going at lower voltage which would be fine for a flashlight)
@oldmantick Yeah, the capacity difference between AA and a D is huge. But the other factor is what kind of a load you’re putting on it. A device that requires a very low load over a long period of time, such as an LED flashlight, would probably work great with these, although it still wouldn’t last as long as a real D cell. The more load you place the battery under, the less time it’s going to last, and some devices which pull a particularly high load might cause the AA to overheat and fail pretty much immediately.
Case in point: I used to have a portable CRT television set that ran off of eight D-cells (12V). When I tried using a similar “battery shell” product with it, the thing turned on, and shut down in less than 5 minutes. When I pulled the shells out the plastic was melting because the batteries had overheated.
@oldmantick AA to D adapters are available that hold two AA cells. This will get the capacity up to around half, 5000mAh, of a D alkaline.
@oldmantick What voltage does your NiMH charger deliver to the discharged batteries?
Typical NiMH or NiCad cells are 1.2V.
You can recharge them with a charging voltage that is higher than 1.2V. I’m not sure what voltage the NiBatts are typically charged with, but typical lithiums run at 3.7V and will charge up to 4.2V (before safety features shut off charger). :Insert long explanation here:
To charge lithiums, you typically use about 4.9-5V. :See long-ass safety info:
I think.
I was hoping for a “AA to car battery” converter shells.
@pixelated DIY.
Just woke up… Did it turn into 1980 overnight?!
@MrNews Why…yes…it did. Just scored ZZ Top tickets for MSG.
This meets the definition of a solution in search of a problem…
Here, I want you to convert your AA’s into C’s or better yet D’s. That’s what he said.
No. Just no.
Meh: US$0.81/adapter. Good for AA to D converters.
Amazon: US$0.69/adapter for 16 AA to C adapters.
I never use two flashlights, that take C batteries, that someone bought me at Costco. Yesterday I put them in a box to take to Goodwill. I don’t know if this is worth the money, but I kind of liked those flashlights, so I’ll give it a try. Buying C batteries is a pain in the butt, and I have tons of rechargeable AAs.
The problem with these things is that they are lower capacity… yes they will work, but a C is 8000mAh whereas the AA is 1200mAh. And a D cell can be 20000mAh
@tardis
True, but how often have you gone to use a C or D battery driven item only to find that the batteries are dead. At least this way you can use the AAs you bought here by the metric shit-ton to run whatever it is.
@chienfou well… I replace all my C and D cells with LiPo or LIon batteries.
@tardis
Today’s deal doesn’t clearly say what the product does, exactly.
@806D2701
??? From the top of this page
I would like to conver C’s to aa’s, does it do that