Terry_Dodson
Newly Enlightened
I have a Nuwai TM-301X-3 that i got recently and have been using panasonic cr123a batteries from Circuit city and it works great. but i was wondering if it is possible to use rechargables in it?
which Batteries for Nuwai TM-301X-3 ?
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Randy Shackleford
Enlightened
You may want to verify this but, IIRC, two 3.7V RCR123's will probably blow the LED, since the "regulation" is a 2 ohm resistor.
Blindasabat
Flashlight Enthusiast
I used RCR's in mine for a while, but it may have melted some solder inside as the resistor came loose when I dropped it (a very short distance) just after turning it off.
It seemed to work well until then, but then I tore it down to find a K Vf bin LED inside. If you get a lower bin like H or J, you risk blowing the LED. Take it apart and verify the Luxeon star's bin code. If the fourth letter is a K (mine is an SX1K), you may be OK, any lower, and I would not do it. I do not guarantee it, you may have to resolder something at some point even if it is a K bin.
It seemed to work well until then, but then I tore it down to find a K Vf bin LED inside. If you get a lower bin like H or J, you risk blowing the LED. Take it apart and verify the Luxeon star's bin code. If the fourth letter is a K (mine is an SX1K), you may be OK, any lower, and I would not do it. I do not guarantee it, you may have to resolder something at some point even if it is a K bin.
Terry_Dodson
Newly Enlightened
Thanks for all the replies.
BlackDecker
Enlightened
You could always run it on the Titanium branded 123A batteries from Amondotech.com. Cost only $1 each.
Randy Shackleford
Enlightened
Blindasabat said:
Test the amps on that set-up and you will understnad why the resistor melted.
Even a high K Vf (3.75V) is not wise for running two 3.7V RCR123's (fresh charged at 4.2V each) thru a 2 ohm resistor. That set-up is going seriously push the amperage of the LED into a hard overdrive. This will cause much heat and could blow the LED.
Better to change the resistor to a ~4 ohms or so.
Terry_Dodson
Newly Enlightened
Do they make a 3.0 volt rechargable that would work in it?
If you're going to buy Titanium 123A from Amondo, which I highly recommend, make sure you buy at least 40 or so each shipment (how many lights do you own??). The reason for this is Amondo's shipping rate is insanely expensive. I bought a 12 123A battery + carrying case (recommend also) combo that ran for $20, and shipping added another $6 to it... $26 altogether. Any savings from the batteries ($1 each) will be wiped out from the shipping cost, so shop wisely.
Terry_Dodson
Newly Enlightened
Thanks for that tip. So far as for the 123 batteries, i have my Nuwai TM-301X-3, my ultrafire 602D, and my Xenon light that take 2 of them, and hoping to get a 123 body for my Fenix L1T.
