- Apr 19, 2005
when alkaline cells drop to 1,2v they can barely provide any current, so a voltmeter may show 1,2-1,3v but under load it sags too low to be useful.
Well, a 32650 LiFePO4 cell is just about the same size, and holds more or less the same amount of energy. With a little simple rewiring of the battery holder these could be used in lots of D-cell devices. Basically, you make a 2S cell holder in 2P. If you have 4S, you make it into 2S2P. As a bonus, the working voltage is 3.2V, so you get a bit more voltage than you get from 2 alkalines in series. If you're lucky and it's a device with a switching regulator, it might even work without modifying the battery holder.If there's a viable alternative to alkaline D's for the average consumer, I don't see it.
Well they won't leak. And long shelf life.yea , at 3 times the cost, it defeats the purpose.
If there's a viable alternative to alkaline D's for the average consumer, I don't see it.
Why I raise the "recovery" activity, people can complain about high prices with some justification, but a lot less if much of the capacity (that I have seen) is thrown into the recycle bin. Some of the blame is on devices which under- utilize; industry which doesn't discourage as much consumption as possible; and somewhat consumers for being complacent, and not well informed (how many have and use battery checkers?).
3D and 4D LED lanterns around here run cells down to 1v or below, at reduced brightness.
NiMH (or NiCd) D is not the answer for a lot of users who do not want to be bothered with rechargeable cell management.
Costco had some Duracell D cells on sale today for $1.08 each. I bought the 14 pack because I like to have some for back up. Currently I’m using the Amazon basic rechargeable D cells. 10 amp. I don’t know who makes them but they are much better than any of the Tenergy’s that I have had and disposed of.
Eneloop in an adapter?We just returned from Disney, where my daughter bought a neat hanging thing that spins in the wind, like a wind chime. When it spins in the wind, if gives a reflective movement visual effect. Really cool looking.
Upon closer observation, despite the fact that there was a 5mph breeze, not all of them on display were spinning. Sun of a gun, most of them were motorized!
View attachment 46991
It runs on a single D cell.
My daughter assures me that the new owner is even more techy than I am.
Certainly there are the tenergy NiMh D cells. I don't know if he has a charger.
But there are also 1.5V Li-ion cells in the D size.
They vary in capacity.
What are your thoughts?
Again, I don't know if he has a charger. But If one is to use a single eneloop in an adapter, one may just as well get an Energizer NiMH D cell, without an adapter. They have about the same capacity, IIRC.Eneloop in an adapter?
Again, I don't know if he has a charger. ............................................................................................................................................................... how good are the LiIon 1.5v cells? Considering that he may need to get a charger to complete the set.
Conversely, you only need a third of the current per cell for standard triple adapters. I run a moderately power-hungry 2D modified maglite with a pair sporting 14500s and it runs great.Might not be good for high current draw uses though, due to the increased contact resistance that adds up between the AA and the D shell/container contacts.
Conversely, you only need a third of the current per cell for standard triple adapters. I run a moderately power-hungry 2D modified maglite with a pair sporting 14500s and it runs great.
These have a wide metal area at the base for a contact on the outside of the case. The bottom itself (with the contact) is the cap that unscrews to install the AA.I hadn't even considered those. I recall they omit the negative contact of triples at the real risk of the AA cell's negative contact not connecting with the device's complimentary negative contact.