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Lava wrote:Does anybody know what the converter is in the H602? I have a friend who just bought one and is using it with two CR123As. He says it seems to work just fine. Given that Zebralight doesn't spec the H602 to handle those cells, I'm not convinced he won't see poor efficiency or even burn the light out eventually. But I suppose it's possible the chip can handle 6V, and that the reason for leaving CR123As out of the spec is entirely mechanical. I'd like to find out which it is, because if the chip can handle 6V I'd like to use CR123As myself.
Lava wrote:Got a reply from Zebralight:
One of our designers told me that at least one chip in the SC600/H600/H602 has a working voltage up to 5.5 Volt. We don't know what would happen with a 6V power source, since it's over the specs of the chips. It's not that difficult to raise the working voltage range a little bit in the future. We are however very concerned about two cells that may not be perfectly match at H1/H2 levels.
As suspected, it's a bad idea to put two CR123As in an H602. Although the comment at the end about matched cells doesn't make sense in this context as the cells are in series.
Lava wrote:That still doesn't make sense, because CR123A primary cells do not suffer from any overdischarge issues. Two CR123A cells with differing voltages would simply register to the light as a single added voltage, and presumably the light would turn off at the low voltage limit of an 18650 cell. Maybe they are worried about people using rechargeable RCR123As?
potholer wrote:If CR123 cells were actually immune to such issues, it's at least interesting that that doesn't seem to be a meaningfully argued point on threads such as:
http://www.candlepowerforums.com/vb/sho ... ting-links
http://www.candlepowerforums.com/vb/sho ... t-Explosio
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