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Thanks Hero I noticed that the VGS = 4V. Is that going to be a problem as a fully charged Li-Ion is 4.2v?? Also, how would I connect it to my circuit. Drain and Source conected in series with my battery and light. Gate, switched with a latching low current switch, but to Drain or Source? With what size resistor? Ive found them on Farnell for less than a Pound so these would be great if I can get them to work! Thank you for answering my questions again

Thanks for the reply Audioguru. So other than a relay, I should just stick with the big switch? Or is there another way for switching 3A? Thanks again

Hello all I make LED bicycle lights that draw 3A from the battery. To turn them on and off or to control the different modes, I have been using a 3A latching switch. Now to get one this small, bezel dia is 17mm and for it to be IP67 rated, they cost