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Showing results 1 to 7 of 7
Search took 0.00 seconds. Search: Posts Made By: DavidM
Forum: Electrical | Charging, Solar and Electronics 04-16-2020, 02:42 PM
Replies: 37
Views: 3,227
Posted By DavidM
Yes underhood temps are hot. But alternators get...

Yes underhood temps are hot. But alternators get hotter. A high output alternator for marine use made by Balmar and others gets up to 200+ F case temperature. Their external regulator has a probe...
Forum: Electrical | Charging, Solar and Electronics 04-16-2020, 01:08 PM
Replies: 37
Views: 3,227
Posted By DavidM
OK using the same device before and after I can...

OK using the same device before and after I can buy your conclusions.

36 amp hours added in 25-30 minutes is great, particularly at 90+% SOC when conventional batteries would slow way down...
Forum: Electrical | Charging, Solar and Electronics 04-16-2020, 12:32 PM
Replies: 37
Views: 3,227
Posted By DavidM
Your math is ok, but aren't you relying on two...

Your math is ok, but aren't you relying on two imprecise readings of SOC, taking the small difference to calculate amp hours charged. A 5% real difference would halve or increase by 50% the amp...
Forum: Electrical | Charging, Solar and Electronics 04-15-2020, 10:47 AM
Replies: 37
Views: 3,227
Posted By DavidM
The question of multiple charging sources with...

The question of multiple charging sources with each having different voltage setpoints is a complicated one and depends on the battery, the current being charged and how the battery responds.
...
Forum: Electrical | Charging, Solar and Electronics 04-15-2020, 08:00 AM
Replies: 37
Views: 3,227
Posted By DavidM
My understanding is that the Sprinter alternator...

My understanding is that the Sprinter alternator is "smart" in that it is controlled by a sophisticated algorithm that is configured for the OEM chassis battery. It raises the voltage when it senses...
Forum: Electrical | Charging, Solar and Electronics 04-14-2020, 11:35 AM
Replies: 37
Views: 3,227
Posted By DavidM
I think that you will find that the difficulty in...

I think that you will find that the difficulty in wiring an inverter powered from the chassis alternator to power the converter outweighs the costs of a dedicated B2B charger. A Renogy 40A B2B...
Forum: Electrical | Charging, Solar and Electronics 04-14-2020, 09:40 AM
Replies: 37
Views: 3,227
Posted By DavidM
You made a very good summary of your findings so...

You made a very good summary of your findings so far. I am no LPO expert but have lived with FLAs extensively as liveaboard boater. I am also a pretty smart (my say so) engineer. See comments in...
Showing results 1 to 7 of 7

 
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