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Battery

3-Step Automatic Fast Battery Charger/Controller Circuit

Last Updated on May 24, 2026 by Swagatam 272 Comments

3stepbatterychargercircuit

Generally it is noticed that while charging batteries people hardly pay any special attention toward the procedures. For them charging a battery is simply connecting any DC supply with matching voltage with the battery terminals. A fast battery charger circuit charges a battery with enhanced speed so that it is charged in less time than the specified period. […]

Filed Under: Battery Charger Circuits Tagged With: Automatic, Battery, Charger, Controller, Fast, Step

Recovering Electrical Energy from Alternator and Battery

Last Updated on May 20, 2026 by Swagatam 39 Comments

bifilarcoilcircuit

A request was sent to me by one of the readers Mr. Edward Pizzo, regarding solving a circuit issue. The idea refers to a very interesting concept of acquiring free energy through a mechanism which once initiated keeps running  in quite a perpetual fashion. Using an Alternator and two Batteries A charged battery #1 is used initially for […]

Filed Under: Energy from Magnets and Earth Tagged With: Alternator, Battery, Energy, Free

Charging a Small NiMh Battery from Air

Last Updated on May 20, 2026 by Swagatam 1 Comment

charging NiMh battery from air 2

In this post we will try to investigate a circuit which can charge a small Ni-Mh battery by extracting free energy from the ether or air. I have explained more Discussing how to Derive Free 9V from Air – By Steven Chiverton Mr. Steven has devised an ingenious way of collecting energy from the air […]

Filed Under: Energy from Magnets and Earth Tagged With: Battery, Charging, NiMH, Small

Calculate Battery, Transformer, MOSFET in Inverter

Last Updated on May 20, 2026 by Swagatam 105 Comments

In this post I have explained how to correctly calculate inverter parameters with associated stages such as battery and transformer, by calculating the matching the parameters correctly. Introduction Making an inverter all by yourself can be definitely lot of fun. However if the results are not satisfactory can completely spoil the whole purpose of the […]

Filed Under: Electronics Theory Tagged With: Battery, Calculate, Inverter, MOSFET, Transformer

LiFePO4 Battery Charging/Discharging Specifications, Advantages Explained

Last Updated on May 20, 2026 by Swagatam 14 Comments

LIFePO4 compressed

While Li-Ion and Lithium polymer electrolyte (LiPo) batteries possess unmatched energy density, Lithium-based batteries are costly to produce and need meticulous handling along with a cautious charging. With the advancement of nanotechnology, the manufacturing process of the cathode electrode for these batteries has seen a substantial improvement. The break through nanotechnology-based high-load LiFePO4 cells are […]

Filed Under: Battery Charger Circuits, Electronics Theory Tagged With: Advantages, Battery, Charging, Discharging, LiFePO4, Specifications

What’s Internal Resistance of Battery

Last Updated on May 20, 2026 by Swagatam 2 Comments

fig2B1

In this post we try to investigate internal resistance of battery and try to learn the critical characteristics involved with this battery parameter. What’s Internal Resistance of Battery The internal resistance (IR) of a battery is basically the level of opposition to the passage of electrons or current through the battery in a closed loop. […]

Filed Under: Electronics Theory Tagged With: Battery, Internal, Resistance

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