Wednesday, Jun 14, 2006 at 21:54
Stephen,
I've put a lot of effort lately into real world measurement of discharging batteries via fridges in particular and lights etc, as an aside. I've also carried it over into charging via vehicle alternators and charging via generator supplied 240 Volt battery chargers.
What have I learned?
To be honest if you want to create the lowest amount of noise for the shortest period of time get yourself a really good quiet generator and the biggest 3 or 4 stage battery charger you can afford!
Why? Quite simple really, the 3 or 4 stage charger at say 30 Amps is as good as about a 120 Amp vehicle alternator. Big statement that one!! How do I back it? The specialised charger is actually that, specialised, it’s designed to optimise battery charging whereas the alternator is designed to replace the short burst of starting current.
What happens with a really good smart charger is exactly that, smarts. It puts back exactly what the battery needs at the rate the battery can handle. It's optimised to battery charging.
Whereas the vehicle alternator just follows a generic vehicle manufacturer’s generic idea of what a generic battery requires achieving something approximating a charge.
So if people actually knew what was going on they’d accept solar first, generators as the best of the rest and look down on vehicle engines as a true pain in the posterior.
Geoff.
| Geoff,
Landcruiser HDJ78,
Grey hair is hereditary, you get it from children. Baldness is caused by watching the Wallabies.
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