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Would a 18.15 mA, 3.2 V solar cell have a strong enough output to charge 4 1.2 V 400 mAh batteries? Answered

I'm currently working on a project that uses 1 Solar Yard Light cell to charge up 4 SYL batteries and am not sure if the cell, (rated at 3.268 V and 18.15 mA), would be strong enough to charge up 4 SYL batteries. The batteries are rated at 400mAh capacity; Fast Charge Rate is 400 mA; Standard Charge Rate is 80 mA.

Also, could I just wire the cell directly into the battery pack or would I have to wire it into the circuit board that came with the solar cell?

Any help on this subject would be very much appreciated! :)

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sshuggiBest Answer (author)2011-10-21

If you wired the batteries in parallel, you could. This simple change up means less voltage and higher amps. If you need to have the 4.8V, you could put a switch in that makes them in parallel for charging and series for use. Here's a pretty basic outline for series and parallel batteries that you may find helpful.

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iceng (author)sshuggi2011-10-21

Batteries in parallel are more current !
Batteries in series are more voltage ! !

A

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BucketBasher (author)2011-10-21

Another thing I wanna do is connect a USB port to the system to charge up my 5V gizmos. Would I have to attach a 5V regulator or something to increase/decrease the voltage to the correct amount?

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Re-design (author)2011-10-20

No. A charger has to be slightly more powerful than the battery it is charging.

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