11/17/2023 0 Comments 12 volt fan for camping![]() Moreover, without the towels, the ice would melt very fast within 3-4 hours. We would take care to wrap the ice bottles with towels or else frostbite is inevitable. Please note that when the weather would be very hot we would use 750 millilitre (mL) ice bottles from our car's fridge/freezer as cuddle toys while sleeping in the car. This fan setup was rudimentary to say the least and hence we were looking to upgrade to a more reasonable/effective one. So the maximum usable power from the solar panel would be approximately around 40-41 watts since we were using the cheaper and less efficient PWM (pulse width modulation) technology. We can even recharge this when the car's engine is off with the help of the 50 watt monocrystalline solar panel connected to a PWM charge controller in my car during the day. We used to use Xiaomi's Qualcomm Quickcharge 3.0 compatible 18 watt fast car charger to recharge the power bank through a high capacity micro-USB male to USB male cable converter cable. It consisted of a Xiaomi 20000 mAh power bank (actual capacity after accounting for conversion losses is around 14000 mAh) to power two USB powered 3.6 watt 3-speed car fans for atleast 8 hours or more while the engine is off. Moreover, lead-acid batteries are expensive to the tune of approximately INR 100 per Ampere Hour (AH) and do not last long either. The ones that do not release fumes are quite expensive and nearly impossible to get in a desired shape/size. However, car fans need electricity and we did not want to keep a lead-acid battery in the cabin of my car as those release fumes and my car's cabin also serves as my living/sleeping space. But as you know, summers here in India can be scorching and hence fans are an absolute necessity to beat the heat. So we thought of indulging in car camping again. Summer is here and things have somewhat started limping back to near normalcy after the scourge of the pandemic. It had been quite some time since we had done some changes or upgraded the abilities of our dear Blaze aka our 1st generation prefacelifted 1.6 petrol Creta AT thanks to the pandemic. This post is about how we upgraded the fan setup in our car for car camping and reduced our regular brick and mortar home's electricity bill by approximately 20-30% in the process. And kindly bear with me since the following is a long read. If you want to replicate this DIY project yourself then please do so at your own risk. ![]() The planning was done jointly by myself and my son while the execution of this project was largely done by my son. My son has a background in Mathematics but he too is not very knowledgeable about this stuff. I do not have an academic background in natural sciences and I am not very knowledgeable about electronics/electricals. All prices are true to the best of my knowledge and belief. Disclaimer : All voltages mentioned are for direct current or DC.
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