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1

Either of the replacement batteries is probably suitable. A 3.6V or 3.7V lithium ion / lithium polymer battery will be at about 4.2V when fully charged. Newer chemistries may allow 4.3V. Charging a 4.3V capable battery to 4.2V max will very slightly reduce stored capacity and do no harm. Charging a 4.2V capable battery to 4.3V can be a very very very bad ...


1

Power banks typically are USB hosts so they can negotiate about voltage and current requirements with connected devices and e.g. cut power if required. In contrast to this, a USB flash drive (aka "mass storage device") is a USB device, which does not provide a voltage on Vbus. As far as I know, this contradiction makes it impossible to have both ...


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Most EVs including bikes already recover 'spare energy' from motion through 'regenerative braking'. The kinetic energy stored is turned into electricity by the motor acting as a motor-generator when braking. No need for anything else at all. There's a video from Bjorn Nyland on youtube showing how he recovered much of the energy used driving his MG ZS EV up ...


3

Perpetual motion machines are impossible no matter how clever you think you are and how complex you can build them. In your case, the dynamo will impose an additional load to the motorcycle motor and additional consumption from the battery. And, because you lose some energy as heat at any conversion stage, you will in fact get LESS mileage. Sorry, that's how ...


12

It is correct. You normally see PMOS connected like this to act as a reverse-polarity "diode". simulate this circuit – Schematic created using CircuitLab It has much less voltage drop than an actual diode and will protect currents from flowing the wrong way when the voltage is connected between the battery terminals are connected in reverse. ...


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Don't use a TP4056 for charging LiFePO4 batteries; it won't stop charging until about 4.2V has been reached and while some LiFePO4 batteries will probably handle that without exploding, it could damage them and will shorten their cycle life (the number of times they can be charged and discharged without noticeable deterioration/capacity loss). The maximum ...


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LiFePO4 cell may be charged by CN3058E or MCP73123, if you want to make the charger yourself, condensers and heat-sink is necessary. It may also charged using a 3.6V power source and a resistor. LiFePO4 6V/12V/24V battery pack can just use a lead acid charger unless it's out-of-balance.


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I was able to solve this by using an H-Bridge wired as an active rectifier. By using the recommendation here as inspiration, I bought a MOSFET Array 2 N and 2 P-Channel H-Bridge (DMHC3025) and wired it up as shown in the image below. This removed the voltage drop across the diode bridge and fix the inconsistent performance of my charging circuit.


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You have to add a step-up converter that will boost the 3.36V up to 5V. You need 5V to charge li-ion up to 4.2V


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