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Anonymous
2015-12-24 23:26:16 Post No. 919707
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Anonymous
2015-12-24 23:26:16
Post No. 919707
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Hey /diy/. Need some help with a project. I have a small off grid solar system. No power on the property. A am a little strapped for cash, the problem i have is the battery is to large for the the solar array and its not getting a regular full charge. I ran a generator for 10 hours and used a dumb charger. It helped a lot and the battery has recovered somewhat. I can add another charge controller. The problem is thats fucking expensive. I need 120-130 amps going in an hour for 3 hours for a proper equalize stage. I cannot find a single source online of a high amp dumb charger thats that big. Highest i found was 55 amps i got at work and the shit burnt out in a day (returned it) and regulated chargers are designed for smaller standard cells like golf cart batteries and marine cells. The voltages are to low and they never fully charge let alone an equalize option. So i thought of an alternator. Same problem, they are regulated to low, but i found out i can use a rheostat and control the regulator, tricking it into thinking the voltage is lower than it is. Problem is I dont know a ton about them.
Will it still push out the current at 16 volts?
Is 16 volts hard on the alternator?
How do i control the amperage? I need constant current and constant voltage for a proper equalize. Thoughts?
Also most important, how large of an engine do i need to drive 120-130 amps? How large to that its not straining? I figure I will need a larger ALT since they don't put out a full rated amount till high speed. I don't want it screaming and hot.
