[Noisebridge-discuss] Multi-chemistry battery charger (was: A box full of rechargeable batteries on the hack shelf.)

Mark Cohen markc at binaryfaith.com
Tue Jan 20 07:36:37 UTC 2009


I've actually got a MH-C777+ MK2

I'm not sure I can really recommend it. I use it on Ni and Li  
batteries (Ham radios)..

It is fussy, not really made that well, and I'm not sure the temp  
sensor really helps..

It couldn't "bring back" my 3 TH-D7 batteries :/

=Mark



On Jan 19, 2009, at 3:31 PM, Michael Shiloh wrote:

> 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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