Hi, I've bought Lithium Manganese Dioxide batteries (Type CP234044, GMBPOW) and, actually, I wanted to ask how to recharge them. But now it hit me hard: are these non-rechargeable batteries?
I did research in advance and found this document to build a 3V charging circuit.
Can someone help clarify if these are rechargeable or not?
Thanks & best
LiManganeseO2-Cell-600mAh.pdf (84.9 KB)
Emphatically not!
These are primary cells and you risk a lithium fire if you try.
Allan.
That's actually a CF234044. I don;t know whether if it;s rechargeable or not but if it is then you can charge it with this CC CV lithium charger buck module.
allanhurst:
Emphatically not!
Actually there are rechargeable Lithium Manganese Dioxide batteries.
Not with 3V output. Heed the advice in #1
Actually there are rechargeable Lithium Manganese Dioxide batteries.
Rechargeable "Lithium Ion" batteries can also use Manganese Dioxide in their construction, but they're still much different than "Lithium MnO2" batteries, which are NOT rechargeable (as other have said.)
Li/MnO2 is the standard chemistry used in common Coin cells (CR2032) and "photo" batteries (CR123, CR2, etc.)
Look up a manufacturer data sheet, and that's what they'll say...
IMNSHO, packaging an Li/MnO2 battery in a flexible shell that looks just like a LiIon/Polymer battery is a terrible idea!
westfw:
Look up a manufacturer data sheet, and that's what they'll say...
Really?
.
I meant that a typical non-rechargeable "lithium" battery will be identified as Li/MnO2 in a technical datasheet, like http://data.energizer.com/pdfs/cr2032.pdf
I had forgotten about the relatively rare, obscure, and crappy, pre-li-ion, rechargeable batteries like the one you found (200uA recommended discharge, 65mAH, 2mA charge current, 20% discharge depth (for a 2032-sized cell.))
That maxell DS: that's very unusual - 2.5V lithium secondary cell - never seen that before. Standard lithium
coin cells (primary) at 3V, most lithium rechargable chemistries are 3.3 to 3.7V. How they going to sell
something with only 67% the energy density in a competitive market isn't clear - the industry is geared
up to 3.7V
The subject of this thread is not rechargable, its basically just a larger version of the lithium calculator
battery (10+ year shelf life being the big selling point for this chemistry - witness the 2%/year self
discharge rate)
westfw:
I meant that that a typical non-rechargeable "lithium" battery will be identified as Li/MnO2 in a technical datasheet.
My point being - Rechargeable Lithium Manganese Dioxide batteries do exist.
If you are referring to CR2032 as an example then you don't even have to look at the datasheet, because the prefix "CR" denotes lithium manganese dioxide chemistry.
I had forgotten about the relatively rare, obscure, and crappy, pre-li-ion, rechargeable batteries like the one you found
So obscure that it was among the first few results which showed up in google when I searched for 'Lithium Manganese Dioxide'. Also I don't think it's pre-li-ion since the datasheet was uploaded in 2015 according to the url. 
In fact Maxell's "ML" series coin batteries are all rechargeable lithium manganese dioxide batteries.
MarkT:
That maxell DS: that's very unusual - 2.5V lithium secondary cell - never seen that before. Standard lithium
coin cells (primary) at 3V, most lithium rechargable chemistries are 3.3 to 3.7V. How they going to sell
something with only 67% the energy density in a competitive market isn't clear - the industry is geared
up to 3.7V
Dunno why Hitachi even bothers to make them in the first place, especially when there are plenty of LIR2032's available in the market. Maybe Japanese electronics sold within Japan uses them? Applications according their own website shows that they could be used in a wide variety of equipments.
Anyways the OP can avoid his battery and get a new rechargeable one.
They're essentially supercap competitors for memory backup, I think. Probably pretty useful in that application; the last company I worked at sold a non-volatile memory board for configuration backup (in the days before flash) that used NiCds and CMOS RAM chips, and they were pretty awful.
So obscure that it was among the first few results which showed up in google
try finding one to buy... 
westfw:
try finding one to buy...
I can't even find Genuine Maxell CR2032's , let alone finding this kind of cell.
Market is flooded with Maxtels and Mexells and even some impressive imitations of Maxell.
Thank you all!
Maybe I can put these batteries to good use. Still have spare ATTiny13As 
Best
