First foray into batteries, looking to charge a Ni-MH via solar power.
12-04-2012, 06:29 PM
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First foray into batteries, looking to charge a Ni-MH via solar power.
So this isn't quite RC related, but I thought you guys would be the most knowledgeable on rechargeable batteries. I have this (http://i.imgur.com/ZC1ni.jpg), which has some easily accessible terminals. I want to purchase this solar panel (http://store.sundancesolar.com/flexi...ar-3-watt.html) and connect it to the battery pack to charge it. Is there a regulator that I need to keep between these two so I don't blow up the batteries or can I connect it directly? Also , if I want to power something from this battery, can I run wires directly off the leads?
This is the servo I'm powering (http://www.parallax.com/Portals/0/Do...Servo-v2.2.pdf) which is controlled by a microcontroller. Only the servo is powered by the battery, the microcontroller has it's own power source.
This is my first foray into batteries and I'm trying to learn so please forgive me if I just suggested something that is completely stupid. Thank you for your help!
This is my first foray into batteries and I'm trying to learn so please forgive me if I just suggested something that is completely stupid. Thank you for your help!
12-05-2012, 03:46 AM
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RE: First foray into batteries, looking to charge a Ni-MH via solar power.
Hello, can you give us a hint to the intended application? Personally I think you will need to put a resistor of appropriate resistance to drop the voltage from 12v to 4.8v. Possibly add a diode to stop any voltage going from battery to solar panel. I am just talking from a limited background so please wait until others to reply- and could those replying not be too harsh on me!
12-05-2012, 05:49 AM
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RE: First foray into batteries, looking to charge a Ni-MH via solar power.
Charging this way may take a long time, but do able.
[link=http://www.reuk.co.uk/Solar-Battery-Charging.htm]click on the dotted line ..........[/link]
Another way is to maybe use a solar panel to charge a Pb battery and then connect an inexpensive dc nimh charger to that when needed.
I have an old car alternator and thinking of making a 1.5ft small wind turbine connected to the shaft but having to make own gearing to spin the alternator over 1400rpm which charges the Pb battery for the shed.
[link=http://www.reuk.co.uk/Solar-Battery-Charging.htm]click on the dotted line ..........[/link]
Another way is to maybe use a solar panel to charge a Pb battery and then connect an inexpensive dc nimh charger to that when needed.
I have an old car alternator and thinking of making a 1.5ft small wind turbine connected to the shaft but having to make own gearing to spin the alternator over 1400rpm which charges the Pb battery for the shed.
