Milk crate solar generator questions

Hello all. My first post here.

I am wanting to build a solar generator based on Will's milk crate 2.0.

Would it be okay to run three of these 12v 20ah batteries in parallel, instead of the one 12v 50ah battery in the video?


Another question is the 12 volt power supply being used as a 110 volt charger for the battery. How does a 12 volt psu know when to stop pushing voltage? Does the battery just stop taking a charge when it is full?

SeanWatts said:

How does a 12 volt psu know when to stop pushing voltage?

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It does not if connected direct to the battery. Using the Drok power supply may result in the power supply failing, or overcharging the battery, or both. My advice is to pay a little more and purchase a battery charger designed for lithium batteries.

SeanWatts said:

three of these 12v 20ah batteries in parallel

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Maybe OK if the three are of equal quality and performance, but unless there is an attractive cost in doing so, practically it will be easier with a single battery. There are many applications using batteries around 50Ah, golf trolleys and mobility for example, so should be easy to optain.

Mike

Thanks Mike!

I have a noco genius 10 charger, so I have that covered.

The three 12v 20ah batteries would be about $140 cheaper than the 12v 50ah battery that Will recommended. Or, for not much more money than the battery that Will recommend, I could go with a single 12v 100ah.