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onlinemetals.com 20% off code ends at midnight on 7/15. If you have one locally you can pick up and not have to pay shipping also here's what I'm using for current carrying capacity https://www.busbar.com/resources/copper-ampacity/

So the guide says to stop charging when the current is close to zero. Well how close? 50ma? 1amp? 5amp? I have 8cell in parallel. That's 2240ah. If we charge at .1c then thats 224amps. Is .01c considered done because that's 22amps. What about .001c? Thats 2amps. I know some power is getting...

all calculations use a standard 280A size battery with 12psi of pressure. the scale to the right shows deformation in mm with a 1/4" bolt or rod it'll need to be torqued to 8ft/lbs to achieve 12psi assuming that plywood or OSB is stiffer than balsa, then .750 wood is comparable to .250...

These suntechs from santan are awesome. I don't know if it's the best watt per dollar but it has to be close. They're specced for 285W but managed 275W. From what I've seen on maps the solar irradiance for north Ga isn't that great, but it is a cool day, so I'd say it's a wash. Either way I...

is my line of thinking wrong to assume that welded on terminals aren't the best way to go? Normally when you have surface irregularities they somewhat get squished once you torque down the lugs. During welding, the only downward force is just to hold them in place while welding. That leaves a...

For example on this BMS https://www.lithiumbatterypcb.com/product/6s-25-2v-7s-24v-8s-29-2v-9s-10s-36v-li-ion-or-lifepo4-battery-smart-bms-with-150a-constant-discharge-current-with-bluetooth-communication-function/ From my understanding the switching is done on the negative side, so why have a...