Measuring V loss during charging
I know that a discharged battery can pull down the voltage at the charger. I was trying to measure voltage loss in my converter wiring, switches, etc. The two 105 AH batteries were 12.13v prior to ...
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smkettner wrote:Snowman9000 wrote:
A while ago, at 9 amps, the converter was 13.62 and battery was 13.34. Or was it 13.43. damm I shoulda written that down.
Again E=I*R
I=9
R=0.036
So E= .324
13.62 - .324 = 13.3
You memory is good at 13.34
The small difference is due to rounding, instrumentation variance and general conditions.
Ohm's Law itself is exactly precise.
Next one 13.64 -13.47 = 0.17v, 5.8A
Using the above, should be 0.21v
So, pretty close again. It's a clamp ammeter so there is some error there. I guess that paints the picture then. Man that is a lot of drop at higher amps. I'll find my sketch of the circuit and post it for snicks.
