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18 votes
Accepted

Why we can not recharge alkaline batteries to their former voltage values

You actually can recharge alkaline batteries, but.... You can only recharge them maybe five to ten times maximum before they stop holding a charge. While the chemistry of alkaline batteries is ...
Hearth's user avatar
  • 35.1k
5 votes

Impact of high-power USB-C chargers on Li-ion battery longevity

Charging current (i.e. charging rate) will have an effect to cell life. The problem is, you are given a commercial product with no info about the cells inside it. It may be that USB-C 30W charging is ...
Justme's user avatar
  • 158k
3 votes

Impact of high-power USB-C chargers on Li-ion battery longevity

Yes, faster charging times degrade Li-ion cells faster. However, (depending on the actual cells used) that only becomes noticeable when charging at constant current / constant voltage in less than 2 ...
Davide Andrea's user avatar
2 votes

LiFEpo4 issues and concern

If this is what you intend to do then NO, it won't work. simulate this circuit – Schematic created using CircuitLab
Rohat Kılıç's user avatar
1 vote
Accepted

How to measure battery voltage during charging?

Will I read battery voltage/charger voltage/intermediate voltage between 15V and 12V. No. If the meter probes are placed across the battery, you will measure the sum of the battery voltage and the ...
RussellH's user avatar
  • 16.8k
1 vote

How to measure battery voltage during charging?

If your battery is 12V and charger is 15V then connecting the charger to the battery should show 12V or something very close to 12V as the battery voltage cannot jump instantaneously as it needs ...
Justme's user avatar
  • 158k
1 vote

How to measure battery voltage during charging?

the battery voltage or the charger voltage or some intermediate voltage. Yes, yes, and kind of yes. By definition, the battery voltage and the charger voltage are exactly one and the same because ...
Davide Andrea's user avatar
1 vote

Impact of high-power USB-C chargers on Li-ion battery longevity

The general rule of thumb is that you should charge any type of battery as slowly as you can afford - so if you can charge this overnight, do so, don't use a faster charger just because you can.
MikeB's user avatar
  • 259
1 vote
Accepted

Protection against inrush current on battery charger

It turns out my question didn't make sense because I was misunderstanding how a P-MOSFET works. As long as Vgs is large enough the mosfet will conduct, no matter the current direction. The reverse ...
Pablo Daniel's user avatar
1 vote

Charging a battery using solar panels, and IV curve of the solar panel

Almost all batteries act as a voltage source/sink, with (as you state in your question) very low internal resistance. A plain solar PV panel acts as a current source over most of its IV curve, its ...
Neil_UK's user avatar
  • 169k

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