Batteries

[Elgin Clock]

Originally Posted by Der Sichelmann

That is a practice battery. The approved Exide batteries are currently charging.

Ok, gotcha.. lol I thought you were referring to the pic as "this is the one we tested".

Sorry about that.. Didn't mean anything by it. Forgive me?

[Der Sichelmann]

yea. Someone said to switch batteries but we took the pic anyway.

[DarkJedi613]

If anyone is curious what we did to test them - we built a circuit that had a load on it and was connected to the battery (and two large muffin fans to cool it all off) then timed how long it took the battery to drop to 10v.

[Max Lobovsky]

It looks like you used some sort of large resistor. In that case, you were not drawing exactly 16 amps the whole time. Because you only measured down to 10V, it is probably close enough, but I just wanted to point it out.

[DarkJedi613]

Yeah it was a resister, not sure what its rating was though. Why wouldn't it be pulling 16 amps all the time though?

And we actually timed it a little past 10v, but the only time amount we cared for was 10v.

[Edit: Hmm...I didn't really mean to make it sound "snappy", I just don't understand why it wouldn't do that.]

[Max Lobovsky]

V=IR. If V goes down, and R is constant, I must go down.

[DarkJedi613]

Originally Posted by Max Lobovsky

V=IR. If V goes down, and R is constant, I must go down.

Oh, that clears it up. Thanks.