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(Moved from other thread...derp)
You could easily double up on the LEDs for cheap, vs purchasing a new solar panel. Also, diodes are usually a couple pennies and can be purchased in the same voltage ranges as LEDs (or with better ranging) and at different wattages of dissipation. You could also opt to set up an array of LEDs/diodes/resistors to target your peak bank voltage and then that will also help bleed off power as well.
My spreadsheet calculations (which may be incorrect) suggest a single 1.4 watt 140 ohm resistor should do the trick to keep your bank at 14 volts @ 100 mA. If anyone out there has better math, please correct me.
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