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Step 17Integrate a rechargeable battery as a power source.
A Soul Cycle needs a rechargeable battery to power the various devices: lighting, amplifiers, and audio devices like microphones and mixers.
For previous Soul Cycles I've used Sealed Lead Acid batteries and NiMH batteries. For the Soul Cycle Chopper, I decided to go with the best battery available, Lithium.
The closest voltage to the devices I used was a 4-cell lithium pack producing 14.4 volts. Some of the devices I planned to run off the battery were really designed for 12 volts. So this means that in wiring up the system I needed to include a couple 7812 voltage regulator chips.
Choosing how large of a battery to use is a judgment call. Unfortunately, you really can't just use a formula, like multiplying your amplifier power by the number of hours you want to perform / ride. This would work for some devices, like lighting, that have a steady current draw. But for a music amplifier, the current draw fluctuates according to the music. So you have to go with estimates. I chose to use 7 x 4 cell packs. I run them all in parallel.
As you can see, I wanted the battery pack to fit in the empty space between the rear rack tubes. The music cabinet fits over the battery enclosure. So, you can separate these, to be able to service the battery.
For previous Soul Cycles I've used Sealed Lead Acid batteries and NiMH batteries. For the Soul Cycle Chopper, I decided to go with the best battery available, Lithium.
The closest voltage to the devices I used was a 4-cell lithium pack producing 14.4 volts. Some of the devices I planned to run off the battery were really designed for 12 volts. So this means that in wiring up the system I needed to include a couple 7812 voltage regulator chips.
Choosing how large of a battery to use is a judgment call. Unfortunately, you really can't just use a formula, like multiplying your amplifier power by the number of hours you want to perform / ride. This would work for some devices, like lighting, that have a steady current draw. But for a music amplifier, the current draw fluctuates according to the music. So you have to go with estimates. I chose to use 7 x 4 cell packs. I run them all in parallel.
As you can see, I wanted the battery pack to fit in the empty space between the rear rack tubes. The music cabinet fits over the battery enclosure. So, you can separate these, to be able to service the battery.
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Dec 7, 2010. 9:34 AMelinventor21
says:
Hey man nice instructable. Btw wouldn't adding so many 18650's in parrallel cause u to have about 16 amps and take out the 7812's? The max they r rated is for 1 amp so at that much power how did u manage?
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