Just trying to make an old NiCd battery useful.
*Battery Voltage= 11.5V (max)
*Battery = 7.5Ah
*LED Bulb = 6 LED, unknown voltage/current/ configuration (solar panel that come with it was 9V)
Figure 1: (presently in use, Working)
Assuming each LED series has an (unknown value) resistor.
Figure 2: (Obsolute)
2 LED Bulbs are set in series to distribute voltage equally. No resistor.
Voltage drop= ~0.5V per hour.
Figure 3: (Old configuration)
1 LED Bulb with resistor. Will this works?
Voltage drop= ?
UPDATE:
Bulb has 6 LED (unknown voltage)
Wattage: 3W (as seen on amazon of similar product)