Recent content by alternety

Maybe Boeing would chip (sorry about that) in. I understand they may wind up looking for a good Lithium charge controller. Or buy A123 cells.

Fechter, I was just doing this survey for my own knowledge. Please don't infer I felt this information was not known. But I figured, maybe one of these was newer or overlooked. A number of the devices I have found are oriented oriented toward automobile battery stacks. They may have some...

I am just goggling for some devices. You probably know about the ones I find. But I will toss them in here for perusal. It will probably be a number of posts as I find something. First one: http://americansolarchallenge.org/wordpress/wp-content/uploads/2010/03/high_cell_count.pdf. A...

I am just curious. I have followed this topic through I think two different threads, and found it very interesting and potentially useful. I have a battery powered tool using a 36V NiCad pack. I was looking at making a Lithium replacement in the long term using this device. As it turned out, the...

These are naive questions, but I am just learning. I see a number of scenarios for charging. 1 - smart charger with balancing (may or may not need bulk supply for power. That makes sense to me. 2 - bulk charger with the BMS board. Using EOC function to turn off bulk charger. That one is a...

From what you are saying, you use regular old silicone rubber. I am not sure the heat transfer of that material is suitable for the application. I don't know; just feels wrong. There are thermally conductive adhesives. There is the potential for better heat conductivity with something like...

A thought about the resistors. Rather than sliding them in and hoping everything is OK; an alternative just off the top of my head. Short concept. If you really want to dissipate heat and not damage resistors. Make a clamped heatsink that clamps around the resistors and then attach that to...

I have been trying to figure out what I need to do to replace a NiCd battery pack in a weed whacker. There seem to be three primary groups that talk about advanced batteries: flashlight people, RC people, and EV bikes/cars people. My needs do not fit cleanly in any of those categories, but you...