- Sep 8, 2007
thank you Sir!
You could get the 5,000 lumen output using a pair of IMR 26650s, or also get pretty close with quality NIMH D cells like Tengergy Centura. Using Alkaline cellls you might get half of that. Maximum voltage for the bulb is 8.4 actual volts. You can use 6x 1.5V alkaline cells because they only put out around 1.2V under a load. Yes, the firefly would be 800 lumen using 6 alkaline D cells.
Hi, when you say "quality NINM D Cells" can you tell me what you mean by "quality"?
Is 10,000mAh NIMH the way to go? I see some at 3000 and 2500. Am I correct in thinking 10,000mAh NIMH D Cells are the ones to choose?
Thanks so much.
Quite the opposite actually. Anything with 3000~ is good. Anything at 10,000 is guaranteed to be a bad cell, and is a blatant lie of capacity. Hope that helps
You could use those, but alkaline are a very expensive way to power a light like this. They also can't drive the bulb to full power because they sag too much under a load. I suggest using NIMH rechargeable cells. I use Tenergy centura.
Hi Vesture, I'm pretty sure those duracells are NIMH - or am I being mental?
I know you guys really get burned on import taxes in EU so I see why you want to find cells there. I must say after search ebay and amazon EU it's a very shallow battery pool. If you can manage a set of the Tengergy precharged cells you wont be sorry though.