Battery Charger Circuits

8 Results

12V SLA Battery Charger Guide

Recently, I had the opportunity to test the internal electronics of several popular Router UPS devices. Honestly, most of them are useless products and will make the router sick within days. Oh, that’s another story, […]

Rechargeable Power LED Torch

A few readers demanded to see one simple circuit of a rechargeable power white LED torch that can be charged through a regular electrical outlet. Alright, here’s the circuit diagram of a simple yet useful […]

Solar/USB Li-ion Battery Charger

Lithium-ion (Li-ion) battery have cemented its position as the primary power source for portable electronics. One of the key benefits of a lithium-ion battery is that it have high energy density without being too bulky. […]

LiFePO4 Battery Charger

Perhaps, the most ideal rechargeable battery chemistry for industrial electronics today is the LiFePO4 (lithium iron phosphate) battery. This newer type of lithium solution is inherently non-combustible and best known for its strong safety profile […]

Nifty NiMH Battery Charger

And now another interesting little project. After seeing numerous online projects I decided to build my own simple NiMH battery charger circuit using NiMH batteries because a bunch of GP2100 series NiMH cells are lying on […]

TL431 & Li-Ion Battery

TL431 is a cheap ‘n’ cheerful yet reliable programmable precision shunt regulator chip available in 3-pin TO-92 package. This monolithic IC voltage reference operates as a low temperature coefficient zener which is programmable from Vref […]

Universal 2S Li-Ion/LiPo Charger Module

This is a simple and 100% safe universal linear charger module for 2S Lithium-Ion (Li-Ion) and Lithium-Polymer (LiPo) batteries with the recommended constant-current/constant-voltage (CC/CV) charging algorithm. Initially charging takes place in the current mode and […]