[Noisebridge-discuss] Multi-chemistry battery charger (was: A box full of rechargeable batteries on the hack shelf.)
Michael Shiloh
michaelshiloh1010 at gmail.com
Mon Jan 19 23:31:12 UTC 2009
Speaking of chargers, I've been thinking of getting this one. Seems
extremely versatile for about $100. Any comments?
The Maha MH-C777 Plus from Maha Energy:
http://www.mahaenergy.com/store/item.asp?idproduct=185
"It will properly charge just about any battery pack: range of 1.2V to
14.4V (1 to 12 cells) for NiMH & NiCD, and 3.6V to 14.4V (1 to 4 cells)
for Lithium Ion.
In addition to battery packs, you can also charge 1 to 12 cells of AA,
AAA rechargeable battery cells. "
Andy Isaacson wrote:
> On Mon, Jan 19, 2009 at 02:50:13PM -0800, Martin Bogomolni wrote:
>> It's a generic liPO charger available from a number of hobby stores.
>> It has charge control circuitry, costs ~$150
>>
>> http://www.tmenet.com/xtrema.htm
>
> Lithium Polymer and Lithium Ion batteries are interesting beasts. I
> have a charger at 83c as well and am interested in discussing how to
> best use them with other Noisebridgers.
>
> In particular, they get very unhappy if you short them ("sparks and
> fire" levels of unhappy), and if you drain the cell below its minimum
> voltage, it'll never come back. So a LiPo "manager" circuit is a good
> idea; for example,
>
> http://www.bphobbies.com/view.asp?id=V426371
>
> They're definitely not a simple drop-in replacement for AA, more's the
> pity.
>
> -andy
>
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