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Originally Posted by leethetreeguy Is this the battery you are looking for? Used a meter to do it right.

I picked up an MCX last week and thought it was silly to keep datashee batteries so I reverse engineered the charger, came up with a solution then looked to see what others had done. Sorry for bumping such an old thread but I thought this might be of interest to some of you out there.

AA Datasheet, AA PDF, Pinouts, Circuit – Unisonic Technologies

Also I was planing to modify it to accept a wall wart as it eats batteries! Connect two diodes in series to this wire. Mar 22, I was using the wall wart from my Dx6i. Aug 11, Return to Coaxial Helicopters. Originally Posted by tmenet I thought you guys might be interested in a different type of mod I posted. Aug 24, Not a ton of power datasehet if you still run this on datasheet the resistor will unnecessarily waste battery energy, regardless of how small.


Two diodes in series was my approach. RF Eng Registered User. Jan 13, I should analyze the circuit in the charger to see how they have it connected because datasheeet would also lead to inherent problems when using rechargeable batteries This has the added benefit of reducing the total charge current to each cell so they last much longer than being slammed at 3C!

I have a cellphone wall charger with an output of just over 5V Quote: Cathode stripe goes toward the LED. Jan 09, Picture was removed, uploaded to new host. Last edited by SCF; Dec 08, at It lets you charge up to 5 batteries at once.

Last edited by markusb2; Jul 31, at Dec 08, On the second charge cycle this degrades further to ma and so on. Ddatasheet diode approach does not change the current profile as they only drop voltage, not limit or change the current.

(PDF) A928A Datasheet download

I opted to splice the wires instead of soldering directly to the board since I am not that confident in my soldering skills. My best guess at this point is my use of the wrong solder.

Anybody with input on how to reverse the polarity on the N power jack? Unless anyone has any better ideas, I plan on plugging the wall wart into the wall then plugging the lead into the jack. Then the light never goes out. I drew a schematic to try and understand how this charger works.


Images View all Images in thread. Posting Quick Reply – Please Wait. Remove at battery terminal. I just noticed on the datasheet for the AA transistor they state the collector-emitter saturation voltage is 2v so using 6v of alkaline AA batteries you should get a charge voltage of 4v but i am curious if you only feed 5v what the batteries are charging to?

Wondering now if the batteries need to be changed, maybe I lucked out and all is not lost on my little misfit. The charger appears to be exactly the same minus slightly different branding on the front.

AA Datasheet, PDF – Qdatasheet

Cathodes stripe toward LED. I found several other mods that prevent you from being able to put AA batteries in, or they require you to leave a single AA battery to power the LED. I picked this up from frys a while back. Jan 06, datassheet, Originally Posted by tmenet. Help with qualcomm charger modification!