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1.5 volt batteries in parellel using a dc-dc boost converter ? Answered

yes I know 1.5 as a minimum 3.7 may be more appropriate but desired result is to avoid series batter deficiency focus on capacity and leave voltage to circuitry, a chain is only as strong as its weakest link yada yada yada! use solid state rather than relays. use mosfets in parallel to handle reqired current. yes! it is true , I have a lot to learn. power could be controlled by frequency of low voltage battery bank, output as 3 phase at desired frequency cps. wel that is my thoughts and I am sure someone has worked with this idea, after all I am not the only dumb person. yes you guessed;

recharging alkaline cells with a pwm charger40-200 cpm @ 80% on 20%off use batteries in a lower draw condition e.g. d cell max 10 amps.each



3 months ago

Partial answer: Operating rechargeable batteries in parallel is not advised since even minor differences in the cell capacity will lead to undercharging some of the parallel cells. Over time this could lead to loss of capacity and poor battery performance.
2nd: Boost converters are not very efficient especially at low input voltages since the input currents would have to be quite high to provide significant power to a motor. Also as the forward conduction voltage drop in switching semiconductors becomes a significant percent of the battery voltage, the power conversion efficiency will suffer. High currents also lead to higher (ohmic) heating losses in cables.
Most of these issues can be minimized by selecting a higher voltage for the battery power supply.