Recent content by BillyBobJoeseph

Hi, another simple battery question. Say you have something that requires 10 watt hours to charge, and you have a source providing a constant 50 watts. It would take .2 hours to charge, right? I feel like I'm missing a quantity here.

What if I was using say, 3 solar panels and wanted to charge one large (lithium ion) battery? What circuitry would I need there? Each panel may gather different voltages, and I'm assuming as with before, Li-Ion are finicky so I'd need to do something different?

I was also wondering how multiple things could charge one battery (safely of course). Could I get some circuitry information on that too?

Understood.

I see. Couldn't I just use two separate voltage regulators so that voltage isn't a problem?

Well, I'm trying to learn some circuit 101 here that applies to my project. Basically, what type of voltage regulation and circuitry would I have to incorporate to charge not only 1 battery, but two. Both would be lithium ion but of different voltages.

I am by NO means an electrical engineering student, so please explain it to me like I'm 5. My friend sent me a circuit diagram and I don't know how it works/what it means, but basically I want to know if it's possible to charge 2 batteries at once instead of 1, using the same mechanism. If so...

Thanks. Follow up question, all other factors aside, a 1000 mAh battery would last 1/2 has long as a 2000 mAh battery right? The device would still act the same way, not like voltage where it requires a certain amount, correct?

How so?

How long can a 35 mAh battery charge a device that requires a 70 mA current? 30 minutes, right?