There is a small smd resistor that sets the output range. I don’t know the values for each but I have changed the amps output on some charger boards. On those less resistance made the amps go up. Can you see if there is one resistor on each driver that is a different value?
Look for 0402 resistor below uC chip; 75kOhm is 12Amp, 100kOhm 9Amp, 150kOhm 6Amp (or 3 Amp in case large shunt resistor is marked with "002" which is 2mOhm).
@ led4power,
is there an estimate date for shipping of the products bought in December?
I didn’t receive any e-mail with the shipping info, hence my question.
Thanks in advance
@ led4power, is there an estimate date for shipping of the products bought in December? I didn't receive any e-mail with the shipping info, hence my question. Thanks in advance :THUMBS-UP:
I was waiting for LD-4 parts to arrive, within couple of days.
@ led4power, is there an estimate date for shipping of the products bought in December? I didn’t receive any e-mail with the shipping info, hence my question. Thanks in advance
I was waiting for LD-4 parts to arrive, within couple of days.
Thank you for the reply
I will wait, no problem at all!
Hello L4P, I’m waiting for a delivery from post office, I’ve ordered some leds from you in December,now they seems stuck somewhere in my country,I will try to contact the post office,anything you can do for It? Will let you know how It ends up after some call
I think I have a never used 17mm version in the 3 amp type that I don’t need. But I have not unpacked a bunch of workshop offs ‘n’ ends yet so can’t even verify for a bit. It might even be a 6 amp; my memory fails me.
Hi neven;
May be a stupid question but i got several ld4a drv in my mod box
And i dont know how to reconize a 6,9 or 12 amp one
Is there a way ?
There is a small smd resistor that sets the output range. I don’t know the values for each but I have changed the amps output on some charger boards. On those less resistance made the amps go up. Can you see if there is one resistor on each driver that is a different value?
BLF Member Map, add yourself
My 8th Annual contest entry My 7th Annual contest entry My 6th Annual contest entry My 5th Annual contest entry My 4th Annual contest entry
My DBSAR inspired SRK lantern hand made mod
Gonna check
Thanks
Look for 0402 resistor below uC chip; 75kOhm is 12Amp, 100kOhm 9Amp, 150kOhm 6Amp (or 3 Amp in case large shunt resistor is marked with "002" which is 2mOhm).
led4power.com
@ led4power,
is there an estimate date for shipping of the products bought in December?
I didn’t receive any e-mail with the shipping info, hence my question.
Thanks in advance
MY REVIEWS THREAD /// My Flashlight Collection /// YouTube Channel
Mods: 1 / 2 // TIR: 1 / 2 // Others: Biscotti 3 + 1*7135 / Triple TIR w/ XP-G2 /// My Review's Blog (PT) /// OL Contest 2019 /// OL Contest 2020 /// GIVEAWAYs: 1 / 2 / 3
Thanks neven useful information
I was waiting for LD-4 parts to arrive, within couple of days.
led4power.com
Thank you for the reply
I will wait, no problem at all!
MY REVIEWS THREAD /// My Flashlight Collection /// YouTube Channel
Mods: 1 / 2 // TIR: 1 / 2 // Others: Biscotti 3 + 1*7135 / Triple TIR w/ XP-G2 /// My Review's Blog (PT) /// OL Contest 2019 /// OL Contest 2020 /// GIVEAWAYs: 1 / 2 / 3
Just wanted to let you know that my stuff has arrived

Haven’t tested it yet but I trust it is all well
Thanks again for your work and products
MY REVIEWS THREAD /// My Flashlight Collection /// YouTube Channel
Mods: 1 / 2 // TIR: 1 / 2 // Others: Biscotti 3 + 1*7135 / Triple TIR w/ XP-G2 /// My Review's Blog (PT) /// OL Contest 2019 /// OL Contest 2020 /// GIVEAWAYs: 1 / 2 / 3
Hello L4P, I’m waiting for a delivery from post office, I’ve ordered some leds from you in December,now they seems stuck somewhere in my country,I will try to contact the post office,anything you can do for It? Will let you know how It ends up after some call
Other than tracking number, I don't have any more info about package,sorry.
led4power.com
What is the status on the store?
Still closed until further notice.
led4power.com
I don’t know what happened, but I hope that everything is going as well as it can be.
I’m just hoping that there will be a decent torch parts store in Europe again
Same here!
Is there any way to buy an LD-A4 driver?
Only if some member has spare ones and he's wiling to sell them.
led4power.com
What size and what amps are you after? (amps can be adjusted with a resistor swap. But they are tiny.)
BLF Member Map, add yourself
My 8th Annual contest entry My 7th Annual contest entry My 6th Annual contest entry My 5th Annual contest entry My 4th Annual contest entry
My DBSAR inspired SRK lantern hand made mod
LD-A4 7-9A
https://led4power.com/wp-content/uploads/2017/12/LD-4-datasheet-1.1.pdf
I think I have a never used 17mm version in the 3 amp type that I don’t need. But I have not unpacked a bunch of workshop offs ‘n’ ends yet so can’t even verify for a bit. It might even be a 6 amp; my memory fails me.
BLF Member Map, add yourself
My 8th Annual contest entry My 7th Annual contest entry My 6th Annual contest entry My 5th Annual contest entry My 4th Annual contest entry
My DBSAR inspired SRK lantern hand made mod
Pages