I was testing a SMPS in my car today and was a bit shocked at the results.
No load - in 14.4v / out 98v
10R load - in 11.3v / out 64v
64v^ / 10 = 409.6
So, with a ~410W load my charging system dropped to 11.3v. Does this sound normal for a stock ~70A alternator at idle?
I'm leaning toward the alt is OK, just underpowered. Either way I'm going to buy a new alt; I'm just wondering if it's worth breaking the bank for a 160A unit.
No load - in 14.4v / out 98v
10R load - in 11.3v / out 64v
64v^ / 10 = 409.6
So, with a ~410W load my charging system dropped to 11.3v. Does this sound normal for a stock ~70A alternator at idle?
I'm leaning toward the alt is OK, just underpowered. Either way I'm going to buy a new alt; I'm just wondering if it's worth breaking the bank for a 160A unit.