MEGAWATT 60-AMP INTRODUCTION

pnichols wrote:
I once saw a bumper sticker that read something like "The one who wins is the one who dies with the most toys". If you agree with this bumper sticker, you probably should earn the language of the one you think is going to win.

By the way what's the purpose of this variable voltage power supply quest, anyway? Is it merely so we can obsess over our RV batteries by tweaking pots combined with stop watches to get around the "short-comings" of automatic chargers .... or is there some other reason I'm missing?

I see 4 functions, being adjustable.


1. What is your time and fuel worth on that open cell lead acid battery when you need it charged up? Set it at 14.4V, set a mechanical timer for 1.5 or 2 hours, get your 90% SOC that day, and down the road you go.

2. You know the battery should be top off charged, it's overdue. Set the voltage to 15.0V, and watch the amps drop until you are seeing about a C/20 amp draw rate. Probably somewhere at 95 t0 98% charged when at this amp rate.

3. You've been dry camping and you notice your battery capacity and specific gravity between cells is out of spec. So you do #1 first, then you do #2 next. Then you disconnect all your batteries from your RV, and you set the pot to 16.0V, and you charge until you either see 16.0V at the battery terminals, or your Specific Gravity on all your cells is at 1.275 to 1.280 or above, then you shut things off. You just did an Equalize charge.

4. You want a battery maintainer. Set the V at 13.4 to 13. and just leave it plugged in to do maintenance charging.

All of it done manually, so put a volt /amp device on there to measure Volts and Amps coming out.

For those that want complete control of the situation, know what they want to achieve while controlling things manually, or are knowledgable in battery charging and their intimate battery needs.

Because everyone knows, if you want something done RIGHT, you gotta do it yourself... there are no shortcuts.