lithium aa

E

ebent

10 kW
Joined
Jan 19, 2010
Messages
557
Location
Stuart, Florida
Are there any aa lithium rechargeable batteries with the standard 1.5v?
 
The best thing in rechargeable AA replacement form is a potassium ferrate battery. (assuming the device can handle each cell at 2.2v to start)

But there are none in production for consumer products right now. :(

http://ferrate.eu/pdf/sddb/A-3.pdf
 
It exist some AA battery with lifepo4 chemistry but they include a Dc-dc circuit inside, reducing the mAh of the cell

I dont remember where i say that .. search on google.

It exist some Energizer cells that are lithium but they are expensive!

Doc
 
Thanks for the info. I have a light mounted on a non ebike that requires 4 aa's. It is an led Cateye. I called them to ask about more volts and they don't have a clue. Doc, I know about the energizers etc. and they are good batteries but they do not recharge. I found some lithium aa's that were over 3 volts each. Too many volts I think.

Is the potassium ferrate expensive? Is this old or the next generation? How does it compare to other chemistries.

Thanks.
 
You can try replacing pairs of 1.5V cells with one 3.6V rechargeable lithium cell (not 4.2V lithium cobalt cells). Some LED lights have regulators in them that don't like the 3.6V. You can try putting a diode in series with the lithium cell to drop the voltage to an acceptable level.
 
for the cost and effort of making custom batteries and Dc-Dc converters you can just get a amazingly bright light, with mounting hardware, rechargeable battery, charger, and battery bag.
http://www.dealextreme.com/p/ha-iii-ssc-p7-c-sxo-3-mode-900-lumen-led-bike-light-set-25149

it's only 77 bucks shipped. I have one and it's great. only drawback is blinding oncoming traffic.

Is the cateye worth the effort? for 23$ you can get a most likely better light with rechargeable batteries and charger. If you really want to DIY it, you can also use these batteries and charger. They're cheap and they work.

DealExtreme also has other great lights on the cheap that are designed to work with rechargeable batteries:
$10 LED lighthttp://www.dealextreme.com/p/x2000-...ptics-cree-p4-wc-led-flashlight-1-18650-14450
$7, 2 rechargable, BMS protected, Lithium batteries http://www.dealextreme.com/p/trustfire-protected-18650-lithium-battery-2500mah-2-pack-blue-5790
$5 charger for the batteries http://www.dealextreme.com/p/18650-digital-battery-charger-3499
 
Thanks all. Magic shine is the answer. I'll get the extension cord also. This light is for a non ebike so no dc dc converter needed. I do endorse the draw from the main battery to supply accessories. It is the way of my etrike. I have a stella headlight, an ebike blinking red tail light, a motorcycle stereo system and a cigarette lighter for charging phones etc on the run. The stereo does reduce my range but it is rarely an issue as I have 18ah. But if range is an issue I turn off the stereo amp.
 
Sounds awesome. Here in San Francisco bay, you'd be runover and robbed riding something like that. Too bad, trikes have always seemed fun to me.
 
arronski,
I hear you. I enjoy the set up but it does make it a target. So I'm careful where I leave it.
http://www.bentrideronline.com/messageboard/showthread.php?t=59992&page=7 scroll down to about half way
http://www.bentrideronline.com/messageboard/showthread.php?p=622237&highlight=wired+sound&page=9 on this thread scroll to the bottom. Some pictures of my trike.
 
Know this is an old. It has come to pass. My question is, can the Boxstore lithium AA be recharged. Soon will start buying the rechargeable lithium AA and charger. I have some lithium AA's in a camera but fear the bms will not allow it to charge.

Just looking for thoughts on the matter.
 
If they are rechargeable versions, then they can be recharged. If they are not rechargeables, then they are not designed to be recharged, and the chemical processes that allow rechargeables to do so aren't the same in the non-rechargeables, so they don't work that way.

You can always force electrons back around in the recharge process...but the chemistry that happens isn't the same and depending on the kind of chemistry that goes on in there, you can have excess heating or worse. I don't know what will happen with the specific batteries you have...but there's a fair likelihood you can find videos of them or similar ones being recharged somewhere, along with whatever happens afterward.
 
Neither am I. ;)

There are lithium rechargeables ("secondary"), and there lithium non-rechargeables ("primary").

You don't say which specific ones you are talking about, or link to them, so I can generally just give you the basic info I did (unless you want more details on either type in general).

A search on "Boxstore lithium AA" doesn't find any specific products, so to give you more specific info, you'd need to tell us which specific batteries you have in mind.
 
Had been looking for the specs on them. Not on line or above my search skills. What I know at this point is a few mentioned the chemistry but not in a spec sheet. They are using a bms under the pos cap, the nonchargeable ("primary") drain the battery below 3v before shutting off so at this point I have no interest in trying to charge them. The rechargeable (marked rechargeable) ("secondary") have a bms designed to recharge but allow deep discharge also. Some primary and secondary have the same chemistry but different BMS.

I just wanted to understand them better. Have enough information and will stick to the norms of don't try to recharge a ("primary") non-rechargeable.

Thank you for your time.
 
You must log in or register to reply here.

Similar threads

E
AA AAA rechargeable lithium
Replies
0
Views
132
ebent
E
neptronix
    • Like
Study: Salton Sea area could produce enough lithium for 375 million electric car batteries
Replies
7
Views
695
neptronix
neptronix
T
[newbie] e-bike battery _commercial-availability_ lifetime
Replies
4
Views
485
Tom_Roche
T
jetpackjbd
Sketchy Battery Pack?
2 3 4 5
Replies
113
Views
3,279
jetpackjbd
jetpackjbd
leew
EVE C40 40135 cells?
Replies
2
Views
580
AnthonyC
A
Back
Top