Discuss Simple Solar Powered Pump w/ Rechargeable Battery in the Electrical Forum area at ElectriciansForums.net

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Hi Everyone,


My aim is to build a simple solar powered pump with a rechargeable battery to water plants.

The idea is to use a 6V 1W Solar Panel connected to a TP4056 (protected) to charge a 18650 Lithium Ion Battery. On the output is an MT3608 2A Boost Converter to step up the voltage to a 3V/6V DC Pump.

I would like to know if the design work and any correction/ improvements on different components or adding in a timing function for the motor.

I have attached a diagram for more information. I am a total beginner and would really appreciate any help or advice.


Many thanks,

Jack
 

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Well it is not the simplest option, a 6V lead-acid (motorcycle) style battery can generally be charged direct from 6V panels!

In any case a fuse in the battery lead is always a good idea as last-resort protection in the event of a fault as they don't take kindly to being shorted out.

How do you plan on managing the pump timing, with some sort of sensor for soil humidity or simply a timer to deliver X amount of water every Y period?
 

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