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Electronic Circuits: Automatic Programmable 4.2V Battery Charge, Current up to 500mA using LTH7R IC with PCB
What is the best safe min-max charging voltage for 18650 lithium cells used for power pack to prolong its lifespan? - Quora
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integrated circuit - Li-Ion charging ic with 5V input and battery voltage between 3.9V and 3.6V - Electrical Engineering Stack Exchange
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Charging protocols for lithium-ion batteries and their impact on cycle life—An experimental study with different 18650 high-power cells - ScienceDirect
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Charge voltage experiments with lithium ion batteries showing how capacity varies with charge voltage and higher cycle live with lower charge voltage
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